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Frisørfagets Svendeprøve - independent service foundations study materials
Frisørfagets Svendeprøve - independent service foundations study resources

Frisørfagets Svendeprøve - independent service foundations practice questions

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Question 1Hair fibre, growth and material behavior

What are the three distinct anatomical layers of a human hair shaft from the outermost surface to the innermost core?

  1. Epidermis, dermis, subcutis
  2. Cuticle (kutikula / skællag), cortex (barklag), medulla (marv) Correct answer.
  3. Melanin, keratin, collagen
  4. Sebum, sweat, follicular bulb

Explanation

A human hair strand consists of three concentric cellular layers: the outer protective cuticle (shingle-like overlapping scales), the thick fibrous cortex (housing keratin polypeptide chains, moisture, and melanin pigment), and the central core medulla (present predominantly in medium and coarse hairs).

Question 2Hair fibre, growth and material behavior

Which layer of the hair shaft contains the melanin pigment granules responsible for natural hair color and the disulfide bonds altered during chemical perming?

  1. Cuticle (skællag)
  2. Cortex (barklag) Correct answer.
  3. Medulla (marv)
  4. Sebaceous gland (talgkirtel)

Explanation

The cortex forms the main body of the hair shaft. Its keratin structure contains the bonds altered during chemical waving, and its melanin granules create natural color, so both permanent waving and oxidative lightening depend on cortex condition.

Question 3Hair fibre, growth and material behavior

What are the two primary types of melanin pigment synthesized in human hair follicles, and what colors do they produce?

  1. Eumelanin (red and yellow tones) and pheomelanin (brown and black tones)
  2. Eumelanin (brown and black tones) and pheomelanin (red, copper, and yellow tones) Correct answer.
  3. Eumelanin (brown and black tones) and carotene (red and yellow tones)
  4. Pheomelanin (red and yellow tones) and carotene (brown and black tones), with no eumelanin

Explanation

The two principal melanins contributing to natural human hair color are eumelanin, associated with brown and black tones, and pheomelanin, associated with red and yellow tones. Their amount and balance contribute to the visible depth and tone.

Question 4Hair fibre, growth and material behavior

What is the correct chronological sequence of the three phases of the human hair growth cycle?

  1. Anagen (growth) -> Telogen (resting) -> Catagen (transition)
  2. Anagen (active growth phase) -> Catagen (transitional regression phase) -> Telogen (resting and shedding phase) Correct answer.
  3. Telogen (resting) -> Anagen (growth) -> Catagen (transition)
  4. Catagen (transition) -> Anagen (growth) -> Telogen (resting)

Explanation

In the common three-phase model, anagen is active growth, catagen is the transition or regression phase, and telogen is the resting phase before the cycle returns to anagen. Some sources describe shedding as a separate exogen phase, but that does not change the order of these three core phases.

Question 5Hair fibre, growth and material behavior

What are the three layers of the hair shaft from outermost to innermost?

  1. Cortex, medulla, cuticle
  2. Cuticle, cortex, medulla Correct answer.
  3. Medulla, cuticle, cortex
  4. Epidermis, dermis, hypodermis

Explanation

The three layers of the hair shaft, from outermost to innermost, are: the cuticle (protective outer layer of overlapping scales), the cortex (middle layer containing melanin and keratin), and the medulla (innermost core, sometimes absent in fine hair).

Question 6Hair fibre, growth and material behavior

What is the primary protein that makes up human hair?

  1. Collagen
  2. Elastin
  3. Keratin Correct answer.
  4. Melanin

Explanation

Keratin is the primary structural protein of hair, comprising approximately 90% of the hair's composition. It is a strong, fibrous protein composed of amino acid chains linked by various types of bonds.

Question 7Hair fibre, growth and material behavior

What is the active growth phase of the hair cycle called?

  1. Catagen
  2. Telogen
  3. Anagen Correct answer.
  4. Exogen

Explanation

The anagen phase is the active growth phase of the hair cycle, lasting 2-6 years for scalp hair. During this phase, the hair follicle actively produces new cells. Approximately 85-90% of scalp hairs are in anagen at any time.

Question 8Hair fibre, growth and material behavior

What determines the natural color of hair?

  1. The cuticle layer thickness
  2. The type and amount of melanin in the cortex Correct answer.
  3. The size of the medulla
  4. The blood supply to the follicle

Explanation

Hair color is determined by the type and amount of melanin in the cortex. Eumelanin produces brown to black colors, while pheomelanin produces red to yellow colors. The ratio and concentration create the spectrum of natural hair colors.

Question 9Hair fibre, growth and material behavior

Which type of chemical bond in hair is temporarily broken by water and heat?

  1. Disulfide bonds
  2. Peptide bonds
  3. Hydrogen bonds Correct answer.
  4. Covalent bonds

Explanation

Hydrogen bonds are weak physical side bonds temporarily broken by water and heat. This allows wet hair to be restyled and hold its shape when dried. Disulfide bonds require chemical treatment to break.

Question 10Hair fibre, growth and material behavior

What is the function of the arrector pili muscle?

  1. It moves the jaw during chewing
  2. It causes hair to stand upright and creates goosebumps when contracted Correct answer.
  3. It controls blood flow to the scalp
  4. It produces sebum

Explanation

The arrector pili is a tiny involuntary muscle attached to each hair follicle. When it contracts (due to cold, fear, or emotions), it causes the hair to stand upright and the surrounding skin to form goosebumps.

Question 11Hair fibre, growth and material behavior

What is the cortex layer of the hair responsible for?

  1. Protecting the hair from damage
  2. Providing hair with its strength, elasticity, and color (contains melanin and keratin) Correct answer.
  3. Producing new hair growth
  4. Lubricating the hair shaft

Explanation

The cortex is the middle layer of the hair shaft, making up the majority of the hair's bulk. It contains melanin (responsible for color), keratin protein chains linked by bonds (responsible for strength and elasticity), and determines the hair's texture.

Question 12Hair fibre, growth and material behavior

What effect does an alkaline (high pH) product have on the hair cuticle?

  1. It closes and smooths the cuticle
  2. It swells and opens the cuticle, allowing chemical penetration Correct answer.
  3. It has no effect
  4. It permanently removes the cuticle

Explanation

Alkaline products (pH above 7) cause the hair cuticle to swell and open, allowing chemical solutions to penetrate into the cortex. This is how relaxers, perms, and permanent color work. Acidic products close the cuticle.

Question 13Hair fibre, growth and material behavior

Which layer of skin contains hair follicles, blood vessels, and nerve endings?

  1. Epidermis
  2. Dermis Correct answer.
  3. Subcutaneous tissue
  4. Stratum corneum

Explanation

The dermis is the second layer of skin beneath the epidermis. It contains hair follicles, blood vessels, nerve endings, sebaceous glands, and sweat glands. It provides structural support and nourishment.

Question 14Hair fibre, growth and material behavior

What determines whether hair is straight, wavy, or curly?

  1. The length of the hair
  2. The shape of the hair follicle Correct answer.
  3. The products used on the hair
  4. The climate

Explanation

The shape of the hair follicle determines the curl pattern: round follicles produce straight hair, oval follicles produce wavy hair, and flat or ribbon-shaped follicles produce curly to coily hair. This is genetically determined.

Question 15Hair fibre, growth and material behavior

What is hair porosity and how does it affect chemical services?

  1. The color of the hair
  2. The ability of hair to absorb and retain moisture, which determines how quickly chemicals penetrate and process Correct answer.
  3. The rate of growth
  4. The thickness of individual strands

Explanation

Porosity refers to the hair's ability to absorb and retain moisture, determined by the cuticle condition. High porosity hair (damaged cuticle) absorbs chemicals quickly and may overprocess; low porosity hair (tight cuticle) resists absorption and may need longer processing.

Question 16Hair fibre, growth and material behavior

What is the function of the sebaceous glands?

  1. They produce sweat
  2. They produce sebum (natural oil) that lubricates the hair and skin Correct answer.
  3. They produce melanin
  4. They produce keratin

Explanation

Sebaceous glands are oil-producing glands attached to hair follicles that secrete sebum. Sebum is a natural oil that lubricates and waterproofs the hair shaft and skin. Overproduction causes oily scalp; underproduction causes dryness.

Question 17Hair fibre, growth and material behavior

What is the function of the subcutaneous layer (hypodermis) of the skin?

  1. It produces melanin
  2. It is the deepest layer providing insulation, cushioning, and energy storage through adipose (fat) tissue Correct answer.
  3. It protects against UV radiation
  4. It produces hair keratin

Explanation

The subcutaneous layer (hypodermis) is the deepest layer of the skin, composed primarily of adipose (fat) tissue. It provides thermal insulation, cushions underlying muscles and bones against impact, and serves as an energy storage reservoir.

Question 18Haircut planning, geometry, sectioning and cross-checking

In technical haircutting diagrams (klippetegninger), which projection angle (løftevinkel) is used to create a solid form (hel form) where all hair lengths fall to a single, blunt weight line?

  1. 0 degrees (stationary natural fall against the skin) Correct answer.
  2. 45 degrees (low elevation creating graduation)
  3. 90 degrees (perpendicular to the curvature of the head)
  4. 180 degrees (vertical elevation producing long layers)

Explanation

A solid form (hel form) is created by projecting hair at 0 degrees, allowing it to fall naturally in its gravity-governed position against the skin or neckline. This maintains maximum hair density at the perimeter and produces an unactivated, smooth surface texture with a clean, blunt perimeter line.

Question 19Haircut planning, geometry, sectioning and cross-checking

What is the key geometric difference between a stationary guide (stationær guide) and a mobile traveling guide (mobil guide) in a haircut design plan?

  1. A stationary guide moves progressively with each newly cut section, whereas a mobile guide remains locked in one position.
  2. A stationary guide remains anchored at a single reference point so subsequent sections are overdirected to it, whereas a mobile guide travels along with each newly cut section. Correct answer.
  3. A stationary guide is used only for perimeter work, whereas a mobile guide is used only for interior layering.
  4. Both guides remain fixed; the labels describe whether the partings are horizontal or vertical.

Explanation

A stationary guideline remains fixed at one specific position on the head, meaning all subsequent hair sections are combed and overdirected toward this anchor, resulting in progressive length expansion away from the guide. In contrast, a mobile (or traveling) guideline moves continuously with the work, taking a small slice of previously cut hair to serve as the length reference for the next section.

Question 20Haircut planning, geometry, sectioning and cross-checking

When executing a classic graduated bob (graderet page), which elevation angle and finger angle are typically applied in the occipital nape zone to build the graduated weight ridge?

  1. 0-degree elevation parallel to the collarbone
  2. 45-degree elevation with fingers held at an angle that mirrors the desired graduation plane Correct answer.
  3. 90-degree elevation held perpendicular to the floor across all nape sections
  4. 180-degree elevation directed straight up toward the ceiling

Explanation

Graduation requires lifting the hair between 1 and 89 degrees, typically at approximately 45 degrees in the nape area. Holding the fingers at an angled cutting line relative to the head curvature builds progressive weight accumulation and a defined graduated wedge.

Question 21Haircut planning, geometry, sectioning and cross-checking

Why is cross-checking (krydstjek) an indispensable step in technical haircut verification during a svendeprøve?

  1. It repeats the original cutting partings so the same guide is checked from the same direction.
  2. It checks the haircut by parting and combing the hair in the opposite geometric direction from which it was originally cut to reveal uneven lengths and balance errors. Correct answer.
  3. It compares only the left and right perimeter after styling, without checking internal lengths.
  4. It checks the haircut solely by measuring the first guide again.

Explanation

Cross-checking involves parting and inspecting the hair in the opposite direction from the cutting partings (for example, parting horizontally to check a haircut performed with vertical partings). This immediately highlights any balance discrepancies, unintended length steps, or irregular weight distribution before final finishing.

Question 22Haircut planning, geometry, sectioning and cross-checking

When cutting a blunt baseline around the ear on a model with prominent ears, what technical adjustment must the hairdresser make to prevent a hollow dip (et 'hul') in the perimeter line?

  1. Apply maximum downward tension with the comb directly over the ear cartilage while cutting.
  2. Release all tension over the ear, allow the hair to sit over the ear in its natural fall, or lightly tap the hair above the ear with the spine of the comb. Correct answer.
  3. Elevate the section above the ear to 90 degrees before cutting the perimeter baseline.
  4. Thin the hair over the ear with 40-tooth thinning shears before establishing the baseline.

Explanation

Prominent ears push the overlying hair outward; pulling this hair taut during cutting causes it to spring upward when released, creating an unsightly hollow dip in the baseline. Releasing tension and allowing the hair to settle naturally over the ear protrusion ensures the perimeter remains continuous and level.

Question 23Haircut planning, geometry, sectioning and cross-checking

In haircutting geometry, what does a 90-degree projection (løft) mean at a point on the head?

  1. The hair strand is combed flat against the scalp with zero elevation.
  2. The hair strand is pulled directly downward toward the floor.
  3. The hair strand is lifted straight out at a 90-degree right angle relative to the curve of the skull at that exact point. Correct answer.
  4. The hair is held parallel to the floor in every head zone, regardless of the skull surface.

Explanation

In technical cutting diagrams, projection (løft) is measured relative to the tangential surface of the head. A 90-degree projection at the parietal ridge means the hair is extended straight out perpendicular to the skull curve at that specific location, forming the basis of a uniform layer.

Question 24Haircut planning, geometry, sectioning and cross-checking

When performing point cutting (spidsklipning) to soften a dense perimeter, how should the shears be oriented relative to the hair ends?

  1. Horizontally flat across the finger guide to remove a blunt 2-centimeter strip.
  2. At an acute, vertical or slightly diagonal angle cutting into the hair ends with small scissor snips. Correct answer.
  3. Nearly parallel to the strand while sliding from mid-lengths toward the ends.
  4. Perpendicular to the strand while removing deep, widely spaced notches from the perimeter.

Explanation

Point cutting is executed by inserting the tips of the shears into the hair ends at an acute vertical or slight angle. This technique removes micro-segments of length, creating a soft, broken, textured edge that blends seamlessly without compromising the overall baseline length.

Question 25Haircut planning, geometry, sectioning and cross-checking

In men's classic barbering and scissor-over-comb (saks over kam) technique, what is the primary role of the comb teeth and spine orientation?

  1. The comb establishes the taper plane, but it remains fixed while the shears move through the whole side panel.
  2. The comb lifts, controls elevation, and establishes the flat cutting plane while the shears cut the hair protruding past the teeth. Correct answer.
  3. The comb lifts the hair at one fixed elevation while the shears create the taper by changing angle independently.
  4. The comb is used only to detangle each section before a separate freehand shear cut.

Explanation

In scissor-over-comb, the comb acts as the movable cutting guide and elevation regulator. As the comb moves smoothly upward against the grain of hair growth, it angles away from the scalp to determine the taper angle, and the moving blade of the shears cuts the hair extending beyond the comb teeth.

Question 26Haircut planning, geometry, sectioning and cross-checking

When designing a haircut for a client with a pronounced round facial morphology (rund ansigtsform), which cutting strategy best creates an optical illusion of oval balance?

  1. Maximum width and voluminous curls concentrated at cheekbone level combined with a blunt heavy fringe.
  2. Vertical height and volume at the top crown with sleek, closer-fitting sides and longer framing vertical strands. Correct answer.
  3. A chin-length geometric bob with severe horizontal fullness expanding at the jawline.
  4. A completely flat crown with widest horizontal weight lines hitting directly across the ears.

Explanation

A round face shape features soft curves with equal horizontal and vertical proportions. Creating height and texture on top while keeping the side perimeters narrow and streamlined elongates the perceived silhouette toward an oval balance.

Question 27Haircut planning, geometry, sectioning and cross-checking

How should a hairdresser accommodate a strong double crown whorl (dobbelt hvirvel) at the occiput/crown area during haircut execution?

  1. Cut the whorl hair extremely short with high-tension shear pulling to force it to lay flat against the skull.
  2. Leave extra length and cut with minimal to zero tension, allowing the natural circular growth direction to determine where the hair settles. Correct answer.
  3. Thin the whorl down to the scalp using razor slicing directly against the hair root.
  4. Chemically straighten the crown first so every growth pattern can be cut with the same tension.

Explanation

Hair whorls have strong rotational follicle angles that resist manipulation. Cutting them under tension or too short causes the hair to spike uncontrollably outward; leaving sufficient weight and cutting without tension allows the hair to follow its natural growth spiral gracefully.

Question 28Haircut planning, geometry, sectioning and cross-checking

In technical cutting terminology, what is 'overdirection' (overdirigering), and what is its direct consequence on length distribution?

  1. Combing hair directly upward at 180 degrees to equalize all hair strands equally.
  2. Directing hair away from its natural falling position toward an anterior or posterior reference point, which produces progressive length increase in the opposite direction. Correct answer.
  3. Changing the elevation of a section while keeping it directly above its natural base.
  4. Moving the cutting guide with each new subsection while keeping each strand in natural fall.

Explanation

Overdirection occurs when hair is combed and shifted laterally or forward/backward away from its natural vertical fall. Hair that travels the greatest distance to the cutting guide retains the greatest length, creating progressive length and weight distribution in the direction opposite to the overdirection.

Question 29Haircut planning, geometry, sectioning and cross-checking

A client has an oblong/rectangular face with a high forehead and a sharp chin. Which haircut adaptation provides the best optical proportioning?

  1. Center part with long pin-straight hair hanging past the shoulders and no fringe.
  2. A soft horizontal or curtain fringe with lateral width and volume around the cheekbones to soften vertical length. Correct answer.
  3. An extreme high-and-tight skin fade with maximum height pompadour on top of the head.
  4. A sleek, slicked-back ponytail that pulls all hair off the temples and forehead.

Explanation

An oblong face requires styling strategies that shorten the apparent vertical length and broaden the facial silhouette. A soft fringe covers forehead height, while horizontal fullness and softness around the cheekbones create width, restoring harmonious oval proportions.

Question 30Haircut planning, geometry, sectioning and cross-checking

When executing a precision square layer (firkantet form) on the top head zone in men's classic cutting, how must the shears cut relative to a horizontal plane?

  1. Curved tightly to follow the round convex curve of the skull.
  2. Flat across in a straight horizontal line parallel to the floor, regardless of the skull's curvature underneath. Correct answer.
  3. At a 45-degree bevel downward toward the front forehead only.
  4. On a diagonal plane that rises toward one temple and falls toward the other.

Explanation

A square form (firkantet form) creates a masculine, flat horizontal silhouette. To achieve this, the hair is elevated vertically and cut along a flat horizontal plane parallel to the floor, leaving the hair longer at the sides where the skull curves downward.

Question 31Haircut planning, geometry, sectioning and cross-checking

What is the primary risk of using thinning shears (udtyndersaks) too close to the scalp on coarse, dense curly hair?

  1. The perimeter becomes more blunt because thinning near the root adds weight to the ends.
  2. The cut short hairs stand up like stiff bristles, pushing the longer overlying hair outward and creating unwanted bulk and frizz. Correct answer.
  3. The curl pattern becomes uniformly tighter because every shortened strand recoils equally.
  4. The haircut becomes easier to control because removing root support always reduces volume.

Explanation

Thinning shears cut a percentage of hair strands within a section. If used close to the scalp, these short, blunt bristles support the outer layers and push them outward, increasing frizz, volume, and wild texture rather than reducing bulk.

Question 32Haircut planning, geometry, sectioning and cross-checking

When designing a classic men's tapered neckline (udtonet nakke) versus a blocked/square neckline (kantet nakke), what is the key aesthetic and maintenance advantage of the tapered version?

  1. A tapered neckline preserves a hard horizontal boundary that stays unchanged as the hair grows.
  2. A tapered neckline grows out softly and naturally without creating a harsh, visible ledge of stubble as hair lengthens. Correct answer.
  3. A tapered neckline gives the strongest geometric outline but usually shows regrowth sooner than a blocked line.
  4. A tapered neckline controls crown growth patterns because its shortest point is at the nape.

Explanation

A tapered neckline fades gradually down to the natural skin line without a hard perimeter boundary. As the hair grows in subsequent weeks, the transition remains soft and tidy, whereas a sharp blocked/square line quickly reveals an untidy patch of neck stubble underneath.

Question 33Haircut planning, geometry, sectioning and cross-checking

When cutting an increase-layered form (øgende lag, often called a 180-degree cut), how does the length of the interior hair compare to the perimeter length?

  1. The interior hair at the top crown is cut shortest, progressively increasing in length toward the lower perimeter. Correct answer.
  2. The interior crown hair is kept at maximum length while the nape is shaved completely to the skin.
  3. All hair strands across the entire head are identical in length down to the millimeter.
  4. The perimeter is cut with heavy blunt graduation while the crown remains unlayered.

Explanation

In an increase-layered form (øgende lag), the projection angle elevates hair upward (e.g., toward a 180-degree guide), resulting in shorter lengths at the interior crown and progressively longer lengths toward the lower perimeter, preserving overall length while adding movement.

Question 34Haircut planning, geometry, sectioning and cross-checking

When evaluating a client's profile for haircut balance, how is a convex profile (konveks profil) characterized, and how should hair design balance it?

  1. Prominent nose with receding forehead and chin; balanced by adding soft fullness on the forehead and lower jawline while keeping hair off the nose axis. Correct answer.
  2. A prominent chin and forehead with a recessed nose; balanced by concentrating width only at the crown.
  3. A nearly straight forehead-nose-chin line; balanced by adding maximum bulk directly over the nose line.
  4. A prominent nose with receding forehead and chin; balanced by removing all softness at the forehead and jaw.

Explanation

A convex profile features a prominent nose with the forehead and chin receding backward. Adding soft volume at the forehead (such as bangs or sweep) and fullness around the lower chin/jaw counteracts the outward projection of the nose and restores profile equilibrium.

Question 35Haircut planning, geometry, sectioning and cross-checking

Why must wet hair be cut with consistent tension, and what phenomenon occurs if tension fluctuates between loose and tight?

  1. Wet hair is elastic; unequal tension makes adjacent sections retract by different amounts as they dry, producing an uneven baseline. Correct answer.
  2. Unequal tension changes the intended elevation but has no effect on the dry perimeter.
  3. Greater tension always produces a longer dry result because the strand was stretched farther.
  4. Tension can vary safely if every section is checked only while wet.

Explanation

Wet hair is elastic and retracts as it dries. If adjacent sections are held with different tension, they do not settle to the same dry length, so consistent control and a dry visual check are essential for a clean design line.

Question 36Haircut planning, geometry, sectioning and cross-checking

In technical klippetegninger, what does a convex design line (konveks faconlinje) look like compared to a concave design line (konkav faconlinje)?

  1. A convex line arches upward or outward like the exterior of a circle, whereas a concave line curves inward like the interior of a bowl. Correct answer.
  2. A convex line curves inward, whereas a concave line bows outward.
  3. A convex line rises evenly from one side to the other, whereas a concave line is horizontal.
  4. Both terms describe the same curve; the label changes only with cutting-tool choice.

Explanation

In geometric hair design, a convex line curves outward (shorter on the outer flanks and longer in the center, or arching like an outward bow), whereas a concave line curves inward (shorter in the center and lengthening toward the outer perimeter edges).

Question 37Colour, lightening and chemical-texture principles

On a standard hairdresser color wheel (farvestjernen), which primary color is complementary to orange and is therefore used conceptually to neutralize an unwanted orange cast?

  1. Yellow (gul)
  2. Red (rød)
  3. Blue (blå) Correct answer.
  4. Green (grøn)

Explanation

Blue lies opposite orange on the color wheel, so blue and blue-based tones are used to counter an unwanted orange cast. The exact shade code and amount must still be chosen from the product manufacturer's system after diagnosing the hair.

Question 38Colour, lightening and chemical-texture principles

After confirming a manufacturer's shade chart, what does the number before the slash or dot in a code such as 7/34 commonly identify?

  1. The concentration of developer in volume.
  2. The natural tone depth (tonedybde), indicating how light or dark the base shade is on a scale from 1 to 10. Correct answer.
  3. The secondary reflex tone that neutralizes orange.
  4. The recommended processing time in minutes.

Explanation

Professional shade systems commonly use the leading number for depth and later characters for tonal nuances. The precise depth names and nuance numbers are manufacturer-specific, so a candidate should verify the chart for the product being used rather than assume every brand uses identical codes.

Question 39Colour, lightening and chemical-texture principles

What is hydrogen peroxide's central chemical role when it is used as the developer in permanent oxidative hair color?

  1. It supplies the alkalinity that opens the cuticle but does not participate in oxidation.
  2. It acts as the oxidizing agent that can lighten natural melanin and develop oxidative dye precursors into colored molecules. Correct answer.
  3. It functions only as a diluent that reduces the concentration of the color cream.
  4. It neutralizes all dye precursors before they can form color.

Explanation

The European Commission describes hydrogen peroxide as the oxidizing agent in permanent hair-color development. In the product's alkaline system it oxidizes natural melanin and enables developer and coupler molecules to form the intended color; the alkalizing agent, not peroxide alone, is chiefly responsible for swelling the cuticle.

Question 40Colour, lightening and chemical-texture principles

What is the defensible way to select developer strength for an oxidative color service?

  1. Use the strongest developer available whenever gray hair is present.
  2. Choose one fixed concentration for every brand and every desired result.
  3. Diagnose the hair and target result, then use the concentration and mixing ratio specified by the manufacturer for that product. Correct answer.
  4. Estimate the concentration from the shade name without consulting product instructions.

Explanation

Developer selection depends on the starting condition, intended lift or deposit, scalp condition, and the specific product system. The Danish training scope emphasizes product manuals and procedure descriptions, so a single concentration should not be presented as universal across brands.

Question 41Colour, lightening and chemical-texture principles

A client with a high proportion of white hair requests a warm fashion shade. Which planning approach best supports reliable coverage?

  1. Increase developer strength without changing the formula or checking the scalp and hair.
  2. Use the shade line's gray-coverage directions to select any natural-base component, fashion component, developer, and ratio, and record that plan on the diagnoseseddel. Correct answer.
  3. Pre-lighten all white hair before applying the requested darker fashion shade.
  4. Add a complementary tone until the requested warmth is completely neutralized.

Explanation

Many color lines call for a natural-base component when covering a high proportion of white hair, but the proportion, developer, and shade codes differ by manufacturer. The candidate should combine diagnosis with the selected product's gray-coverage instructions and document the chosen formula before application.

Question 42Colour, lightening and chemical-texture principles

Why must porosity be recorded and considered before a coloration service?

  1. Porosity determines the client's natural growth rate and therefore the legal service time.
  2. Highly porous areas can take up and lose color unevenly, so the formula, placement, timing, and need for a strand test may need adjustment. Correct answer.
  3. Porosity identifies the exact manufacturer shade code without reference to the desired result.
  4. Porosity matters only for cutting and can be ignored for chemical work.

Explanation

Porosity can differ between roots, mid-lengths, and ends after weathering or previous chemical work. Porous areas may grab tone, process unevenly, or release color sooner, so visual and tactile diagnosis plus service history and a strand test inform a safer, more even plan.

Question 43Colour, lightening and chemical-texture principles

When bleaching virgin hair for a full blonde transformation, why is the bleach paste typically applied to mid-lengths and ends first before applying to the scalp roots?

  1. The roots are more resistant because newly grown hair contains no moisture.
  2. Body heat radiating from the scalp accelerates the chemical reaction at the roots, causing them to lift significantly faster than the cooler mid-lengths and ends. Correct answer.
  3. The roots have less natural pigment than the lengths and therefore need a shorter formula regardless of heat.
  4. The lengths always require the strongest developer even when they are porous or previously treated.

Explanation

Body heat emitted by the scalp warms the bleach product near the roots, speeding up the chemical breakdown of melanin. If applied at the scalp and ends simultaneously on virgin hair, the first 1-2 cm will lift much faster and lighter, creating an uneven 'hot root' phenomenon.

Question 44Colour, lightening and chemical-texture principles

What is the primary chemical difference between oxidative permanent hair color and direct semi-permanent dye (skyllefarve / direkte farve)?

  1. Direct dyes require a stronger peroxide developer than permanent colors.
  2. Direct dyes use pre-formed colored molecules without oxidative developer, while permanent oxidative color forms color from precursors in a peroxide-driven reaction within the hair. Correct answer.
  3. Both systems use identical precursors; only their processing times differ.
  4. Permanent color deposits only on the surface, while every direct dye permanently alters natural melanin.

Explanation

Direct dyes are already colored and deposit on or within the outer parts of the hair without a peroxide development reaction. Permanent oxidative systems use developer and coupler precursors that react in the presence of hydrogen peroxide to form durable color within the hair.

Question 45Colour, lightening and chemical-texture principles

In balayage and foil highlighting disciplines, what is the difference between a 'slice' (hel pasé) and a 'weave' (vævning)?

  1. A slice isolates a thin solid sheet of hair across the parting, while a weave uses the tail comb to pick alternating strands of hair. Correct answer.
  2. A slice selects alternating fine strands, while a weave takes the whole subsection.
  3. A slice and a weave select the same hair; the difference is only whether foil or paper is used.
  4. A slice always creates a softer result than a weave because it contains less hair.

Explanation

In foil highlighting, a 'slice' takes a continuous, thin plane of hair across the subsection, yielding bold, solid contrast and high impact. A 'weave' uses the tip of a pintail comb in an up-and-down motion to select delicate ribbons of hair, producing soft, diffused dimensional blending.

Question 46Colour, lightening and chemical-texture principles

A client has bleached blonde hair with an unwanted yellow brassy cast at level 9. Which toner nuance should be selected to neutralize this brassiness according to the color wheel?

  1. A gold nuance (.3)
  2. A violet-based nuance, using the selected manufacturer's shade code Correct answer.
  3. A copper nuance (.4)
  4. A green-matte nuance (.7)

Explanation

Violet lies opposite yellow on the color wheel and is therefore the relevant neutralizing direction. Because manufacturers assign different numbers or letters to nuances, the candidate must identify the violet-based toner from the actual product chart and assess the strand before application.

Question 47Colour, lightening and chemical-texture principles

What is the primary role of ammonia (ammoniak) or ethanolamine (MEA) in professional hair color creams?

  1. To supply the oxidizing agent that develops dye precursors without changing pH.
  2. To create alkaline conditions that swell the hair and support penetration and reaction of the oxidative color system. Correct answer.
  3. To lower the mixture to an acidic pH so the cuticle remains compact throughout processing.
  4. To dilute the color cream without affecting penetration or reaction rate.

Explanation

Ammonia and MEA are alkalizing agents. In a permanent oxidative system, increased alkalinity swells the hair and helps the dye precursors and oxidizer work within the fiber. The actual formulation and pH are product-specific.

Question 48Colour, lightening and chemical-texture principles

Why should a 'bleach bath' or blondervask recipe never be treated as a universal salon formula?

  1. Because every bleach bath must use equal parts of four ingredients regardless of brand.
  2. Because stronger developer automatically makes every formula safer by shortening contact time.
  3. Because products differ in permitted mixing, on-scalp use, timing, and contraindications; the diagnosis and manufacturer instructions must govern the service. Correct answer.
  4. Because dilution prevents oxidation, so no strand or scalp assessment is needed.

Explanation

Lighteners are strong oxidizing products, and dilution does not make every improvised recipe approved or safe. The candidate should diagnose the hair and scalp, perform any indicated strand test, and use only a mixture, placement, and timing permitted by the selected manufacturer's instructions.

Question 49Colour, lightening and chemical-texture principles

In technical salon documentation, what does a mixing ratio of '1:1.5' signify when preparing 40 g of color cream?

  1. 40 g of color cream mixed with 40 g of developer.
  2. 40 g of color cream mixed with 60 g of developer. Correct answer.
  3. 40 g of color cream mixed with 80 g of developer.
  4. 40 g of color cream mixed with 15 g of warm water.

Explanation

A ratio of 1:1.5 means that for every 1 part of color cream, 1.5 parts of developer must be added. For 40 g of color cream: 40 * 1.5 = 60 g of developer, giving a total bowl weight of 100 g.

Question 50Colour, lightening and chemical-texture principles

A client has fine, highly porous, sun-lightened ends. What is the best planning response before extending color through those ends?

  1. Assess and strand-test the ends, then use the product system's permitted formula and timing for porous lengths to avoid grab or excess damage. Correct answer.
  2. Use the root formula unchanged because porosity cannot affect color uptake.
  3. Automatically increase developer strength so the porous ends absorb more evenly.
  4. Skip diagnosis and compensate by leaving the product on until the ends match visually.

Explanation

Porous ends can accept tone rapidly and may be structurally fragile. A strand test and the manufacturer's directions help the candidate decide whether to change formula, placement, or exposure time; the safe adjustment is product-specific rather than an automatic universal developer reduction.