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Esthetician (Esthetician License) practice questions

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Question 1Skin Anatomy, Histology, and Physiology

Which layer of the epidermis is the deepest and contains cells that divide and push older cells upward?

  1. Stratum granulosum
  2. Stratum lucidum
  3. Stratum basale Correct answer.
  4. Stratum corneum

Explanation

The stratum basale sits at the epidermal-dermal junction and contains mitotically active keratinocytes. These cells produce new keratinocytes that move outward through the epidermis as they mature.

Question 2Skin Anatomy, Histology, and Physiology

Which structural protein gives keratinocytes toughness and helps form the outer protective layer of skin?

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

Explanation

Keratin is an insoluble fibrous protein produced by keratinocytes as they mature. It provides mechanical strength and water resistance to the epidermis, especially in the stratum corneum.

Question 3Skin Anatomy, Histology, and Physiology

Which cells produce melanin pigment?

  1. Merkel cells
  2. Melanocytes Correct answer.
  3. Keratinocytes
  4. Langerhans cells

Explanation

Melanocytes reside in the stratum basale and synthesize melanin within organelles called melanosomes. The pigment is then transferred to nearby keratinocytes to help protect DNA from ultraviolet damage.

Question 4Skin Anatomy, Histology, and Physiology

The dermis is divided into which two layers?

  1. Papillary and reticular Correct answer.
  2. Papillary and subcutaneous
  3. Stratum basale and stratum spinosum
  4. Epidermis and hypodermis

Explanation

The dermis consists of the superficial papillary layer and the deeper reticular layer. The papillary layer contains loose connective tissue, while the reticular layer contains denser collagen and elastin bundles.

Question 5Skin Anatomy, Histology, and Physiology

Sebaceous glands release their product by which mode of secretion?

  1. Merocrine
  2. Apocrine
  3. Eccrine
  4. Holocrine Correct answer.

Explanation

Sebaceous glands use holocrine secretion, meaning the entire gland cell fills with sebum and then breaks apart to release it. This differs from glands that release products by exocytosis or decapitation.

Question 6Skin Anatomy, Histology, and Physiology

What is the main function of eccrine sweat glands?

  1. Scent compound release
  2. Sweat-based cooling Correct answer.
  3. Sebum-based lubrication
  4. Melanin pigment synthesis

Explanation

Eccrine glands produce a watery secretion that reaches the skin surface through pores. As this sweat evaporates, it helps lower body temperature and supports thermoregulation.

Question 7Skin Anatomy, Histology, and Physiology

The hypodermis is composed mainly of which tissue?

  1. Adipose tissue Correct answer.
  2. Reticular dermis
  3. Stratified squamous epithelium
  4. Dense regular connective tissue

Explanation

The hypodermis, also called the subcutaneous layer, is composed primarily of adipose tissue and loose connective tissue. It provides insulation, cushioning, and energy storage.

Question 8Skin Anatomy, Histology, and Physiology

A wound extends through the epidermis into the dermis. Which healing process most directly replaces lost dermal collagen?

  1. Keratinization
  2. Melanogenesis
  3. Fibroplasia Correct answer.
  4. Desquamation

Explanation

Fibroplasia is the proliferation of fibroblasts and the synthesis of new collagen and extracellular matrix during wound repair. This process helps rebuild the dermal framework after injury.

Question 9Skin Anatomy, Histology, and Physiology

Which epidermal layer contains flat, dead keratinocytes surrounded by a lipid matrix that limits water loss?

  1. Stratum spinosum
  2. Stratum granulosum
  3. Stratum basale
  4. Stratum corneum Correct answer.

Explanation

The stratum corneum is the outermost epidermal layer and consists of flattened, fully keratinized corneocytes. Intercellular lipids organized around these cells create the main barrier against water loss.

Question 10Skin Anatomy, Histology, and Physiology

The acid mantle of the skin is primarily maintained by which combination?

  1. Melanin and hemoglobin
  2. Sebum and sweat Correct answer.
  3. Keratin and calcium
  4. Collagen and elastin

Explanation

Sebum and sweat contribute fatty acids and lactic acid to the skin surface, helping maintain an acidic pH. This acid mantle supports barrier function and discourages growth of many pathogens.

Question 11Skin Anatomy, Histology, and Physiology

Which cell type in the epidermis is part of the immune system and helps present antigens to T cells?

  1. Langerhans cell Correct answer.
  2. Merkel cell
  3. Keratinocyte
  4. Melanocyte

Explanation

Langerhans cells are dendritic antigen-presenting cells found in the epidermis. They capture foreign antigens and help initiate an immune response by presenting them to T lymphocytes.

Question 12Skin Anatomy, Histology, and Physiology

What is the approximate turnover time for keratinocytes to travel from the basal layer to shedding in normal adult skin?

  1. 5 to 7 days
  2. 10 to 14 days
  3. 60 to 90 days
  4. 28 to 42 days Correct answer.

Explanation

In normal adult skin, keratinocytes generally take about 28 to 42 days to move from the basal layer to the surface and be shed. This timeline reflects both cell maturation and desquamation.

Question 13Skin Anatomy, Histology, and Physiology

Which dermal component provides stretch and recoil to skin?

  1. Sebaceous glands
  2. Collagen bundles
  3. Hyaluronic acid
  4. Elastin fibers Correct answer.

Explanation

Elastin fibers are highly extensible proteins that allow skin to stretch and then return to its original shape. They are an important part of the dermal extracellular matrix.

Question 14Skin Anatomy, Histology, and Physiology

In which layer of the epidermis do cells begin to produce keratohyalin granules and become more flattened?

  1. Stratum basale
  2. Stratum corneum
  3. Stratum granulosum Correct answer.
  4. Stratum spinosum

Explanation

The stratum granulosum is named for its keratohyalin granules, which appear as keratinocytes begin to flatten and prepare for cornification. This layer marks an important transition toward the dead, barrier-forming stratum corneum.

Question 15Skin Anatomy, Histology, and Physiology

Which statement best describes the role of Merkel cells?

  1. They sense light touch. Correct answer.
  2. They secrete sebum into follicles.
  3. They produce melanin pigment.
  4. They engulf dermal bacteria.

Explanation

Merkel cells are specialized mechanoreceptors located in the basal epidermis. They respond to light pressure and touch and are associated with sensory nerve endings.

Question 16Skin Anatomy, Histology, and Physiology

A client's skin appears shiny and has enlarged pores in the T-zone. Which gland activity is most associated with this presentation?

  1. Sebaceous secretion Correct answer.
  2. Eccrine sweat output
  3. Dermal collagen loss
  4. Apocrine secretion

Explanation

Shininess and enlarged pores in the T-zone are commonly associated with increased sebaceous gland activity. Excess sebum can make the skin look oily and contribute to pore visibility.

Question 17Skin Anatomy, Histology, and Physiology

Which factor most directly increases transepidermal water loss (TEWL)?

  1. Stratum corneum lipid damage Correct answer.
  2. Contraction of arrector pili
  3. Increased melanin production
  4. Dilation of dermal capillaries

Explanation

Transepidermal water loss depends heavily on the integrity of the stratum corneum lipid barrier. When intercellular lipids are damaged, water escapes more readily through the epidermis.

Question 18Skin Anatomy, Histology, and Physiology

Why does skin become wrinkled with age?

  1. Thickening of the stratum corneum
  2. Higher melanocyte density
  3. Loss of collagen and elastin Correct answer.
  4. Increased sebum production

Explanation

Age-related wrinkling is linked to reduced collagen and elastin integrity in the dermis. With less structural support, skin loses firmness and resilience.

Question 19Skin Anatomy, Histology, and Physiology

A biopsy shows a hair follicle with its attached sebaceous gland. In which skin layer is this structure anchored?

  1. Hypodermis
  2. Dermis Correct answer.
  3. Epidermis
  4. Stratum corneum

Explanation

Hair follicles and their attached sebaceous glands are anchored in the dermis. The dermis provides the connective tissue support and blood supply needed by these appendages.

Question 20Skin Anatomy, Histology, and Physiology

A client with darker skin develops post-inflammatory hyperpigmentation after a peel. Which mechanism best explains the increased pigment?

  1. Reduced collagen synthesis
  2. Melanocyte activation Correct answer.
  3. Faster keratinocyte turnover
  4. Lower sebaceous secretion

Explanation

Inflammation can stimulate melanocytes to produce more melanin and transfer it to surrounding keratinocytes. This process leads to the darkened patches seen in post-inflammatory hyperpigmentation.

Question 21Skin Anatomy, Histology, and Physiology

Which statement accurately describes the epidermal barrier's brick-and-mortar model?

  1. Melanocytes are bricks; keratin is mortar
  2. Corneocytes are bricks; lipids are mortar Correct answer.
  3. Collagen is bricks; elastin is mortar
  4. Fibroblasts are bricks; sebum is mortar

Explanation

In the brick-and-mortar model, corneocytes act as the bricks and intercellular lipids act as the mortar. This organized structure limits water loss and helps block entry of irritants and microorganisms.

Question 22Skin Anatomy, Histology, and Physiology

Which vascular change occurs in skin during acute inflammation?

  1. Vasodilation with increased permeability Correct answer.
  2. Decreased blood flow with blanching
  3. Closure of dermal capillaries
  4. Vasoconstriction with reduced permeability

Explanation

Acute inflammation involves vasodilation and increased capillary permeability in the affected area. These changes bring more blood flow and allow immune cells and fluid to enter the tissue.

Question 23Skin Anatomy, Histology, and Physiology

Why must the stratum basale remain mitotically active?

  1. It stores lipids for the barrier.
  2. It generates melanin for the dermis.
  3. It replaces shed surface cells. Correct answer.
  4. It produces sebum for lubrication.

Explanation

The stratum basale contains stem cells and dividing keratinocytes that continuously produce new cells. These cells replace keratinocytes that mature and are eventually shed from the skin surface.

Question 24Skin Anatomy, Histology, and Physiology

Why does prolonged soaking in water compromise the skin barrier?

  1. Sebaceous glands temporarily stop secreting oil.
  2. Melanocytes migrate upward to the skin surface.
  3. Dermal collagen fibers contract and tighten.
  4. Corneocyte swelling disrupts lipid packing. Correct answer.

Explanation

Prolonged water exposure causes corneocytes to swell and can disorganize the intercellular lipid matrix. This reduces barrier organization and can increase permeability and irritation.

Question 25Disorders and Diseases of the Skin

A flat, circumscribed area of the skin that differs from surrounding skin only in color is called a:

  1. Papule
  2. Nodule
  3. Pustule
  4. Macule Correct answer.

Explanation

A macule is a flat lesion with no elevation or depression that is identified by a color change alone, such as a freckle. Adding height or fluid content moves the lesion into a different category.

Question 26Disorders and Diseases of the Skin

An open comedo is commonly known as a:

  1. Milia seed
  2. Whitehead
  3. Blackhead Correct answer.
  4. Sebaceous cyst

Explanation

An open comedo is a follicle whose opening is dilated and exposed to air, so the plug of sebum and keratin darkens. A closed comedo stays beneath the surface and appears as a whitehead.

Question 27Disorders and Diseases of the Skin

Which primary lesion is an itchy, elevated area of localized edema, as seen in hives?

  1. Crust
  2. Bulla
  3. Wheal Correct answer.
  4. Vesicle

Explanation

A wheal is a transient elevation caused by fluid accumulation in the dermis and is the hallmark of urticaria. It typically itches and blanches under pressure.

Question 28Disorders and Diseases of the Skin

A linear crack in the skin that extends into the dermis is called a:

  1. Fissure Correct answer.
  2. Ulcer
  3. Scale
  4. Excoriation

Explanation

A fissure is a narrow break or crack that can extend into the dermis and commonly occurs on dry, thickened areas such as heels or lips. It is a mechanical break rather than a surface buildup or a tissue loss.

Question 29Disorders and Diseases of the Skin

Which cells are responsible for producing the pigment melanin?

  1. Fibroblasts
  2. Keratinocytes
  3. Melanocytes Correct answer.
  4. Langerhans cells

Explanation

Melanocytes sit in the basal layer of the epidermis and synthesize melanin, which they transfer to nearby keratinocytes. That pigment gives skin its color and offers some protection from UV radiation.

Question 30Disorders and Diseases of the Skin

Which disorder is a contagious bacterial infection marked by honey-colored crusts?

  1. Impetigo Correct answer.
  2. Psoriasis
  3. Rosacea
  4. Vitiligo

Explanation

Impetigo is a highly contagious bacterial infection, usually staphylococcal or streptococcal, that produces fragile blisters which rupture and leave honey-colored crusts. It requires medical care and is a contraindication for facial services.

Question 31Disorders and Diseases of the Skin

A small, solid, elevated lesion that measures less than one centimeter across is a:

  1. Papule Correct answer.
  2. Macule
  3. Vesicle
  4. Wheal

Explanation

A papule is a solid elevation with no visible fluid that measures up to roughly one centimeter, such as an inflamed acne lesion. Larger solid elevations are classified as nodules.

Question 32Disorders and Diseases of the Skin

Basal cell carcinoma most often appears as:

  1. A rough red patch that bleeds easily
  2. A dark mole with irregular borders
  3. A pearly bump with rolled edges Correct answer.
  4. A waxy, stuck-on brown plaque

Explanation

Basal cell carcinoma is the most common skin cancer and usually presents as a pearly or translucent papule with rolled edges and visible telangiectasia on sun-exposed skin. It grows slowly and rarely metastasizes but still requires medical treatment.

Question 33Disorders and Diseases of the Skin

In the ABCDE rule for evaluating pigmented lesions, the letter E stands for:

  1. Elevation
  2. Evolving Correct answer.
  3. Edema
  4. Erythema

Explanation

The ABCDE rule stands for asymmetry, border irregularity, color variation, diameter greater than six millimeters, and evolving. Evolving refers to a lesion changing in size, shape, color, or symptoms such as itching or bleeding.

Question 34Disorders and Diseases of the Skin

Actinic keratosis is best described as:

  1. A precancerous sun-induced spot Correct answer.
  2. A wart caused by a virus
  3. A scaly plaque caused by a fungus
  4. A benign tumor made of fatty tissue

Explanation

Actinic keratosis is a rough, scaly lesion produced by cumulative UV exposure on areas such as the face, scalp, and hands. Because it is precancerous, it must be evaluated by a physician, and esthetic treatments should not be performed over it.

Question 35Disorders and Diseases of the Skin

Rosacea typically presents with:

  1. Silvery scales on the elbows
  2. Depigmented patches on the hands and wrists
  3. Comedones and cystic lesions of the cheeks
  4. Facial flushing and telangiectasia Correct answer.

Explanation

Rosacea is a chronic inflammatory condition centered on the face, with flushing, persistent erythema, telangiectasia, and sometimes papules and pustules. Comedones are absent, which helps separate it from acne vulgaris.

Question 36Disorders and Diseases of the Skin

Melasma is most strongly associated with:

  1. An allergic reaction to cosmetics
  2. A deficiency of vitamin C
  3. A fungal infection of the stratum corneum
  4. Hormonal changes and sun exposure Correct answer.

Explanation

Melasma is an acquired hyperpigmentation triggered by UV exposure and hormonal influences such as pregnancy or oral contraceptives. Treatment centers on strict sun protection plus pigment-suppressing agents, because sun exposure retriggers the condition.

Question 37Disorders and Diseases of the Skin

Tinea corporis, or ringworm of the body, is caused by:

  1. A bacterium
  2. A parasite
  3. A fungus Correct answer.
  4. A virus

Explanation

Tinea corporis is a dermatophyte fungal infection that produces ring-shaped scaly patches with an active border. It is contagious, so it is a contraindication for treatment and should be referred.

Question 38Disorders and Diseases of the Skin

Which viral condition appears as grouped vesicles on a red base near the lips and is a contraindication for facial treatment?

  1. Herpes simplex Correct answer.
  2. Molluscum contagiosum
  3. Verruca vulgaris
  4. Tinea versicolor

Explanation

Herpes simplex presents as clusters of vesicles on an erythematous base and is highly contagious while active. Services must be postponed until the lesion has completely healed to avoid spreading the virus.

Question 39Disorders and Diseases of the Skin

Atopic dermatitis is characterized by:

  1. Patchy loss of pigment on the hands and face
  2. Dry, itchy skin from a damaged barrier Correct answer.
  3. Silvery scale over the elbows and knees
  4. Comedones and pustules across the T-zone

Explanation

Atopic dermatitis is a chronic inflammatory condition in which the skin barrier is impaired, leading to dryness, itching, and inflammation. Care focuses on restoring the barrier with gentle cleansing and moisturizing while avoiding triggers.

Question 40Disorders and Diseases of the Skin

Psoriasis is primarily driven by:

  1. An allergic response to metals
  2. A fungal infection of the scalp
  3. Rapid keratinocyte turnover Correct answer.
  4. Overproduction of melanin pigment

Explanation

Psoriasis is an immune-mediated disorder in which keratinocytes turn over far faster than normal, producing thick plaques with silvery scale. Aggressive exfoliation or irritating products can worsen lesions, so affected areas are usually avoided.

Question 41Disorders and Diseases of the Skin

Seborrheic dermatitis is associated with overgrowth of which organism?

  1. Streptococcus bacteria
  2. Herpesvirus
  3. Sarcoptes mite
  4. Malassezia yeast Correct answer.

Explanation

Seborrheic dermatitis reflects an inflammatory response to Malassezia, a yeast normally present on skin, and appears as greasy yellowish scale on the scalp, brows, and nasolabial folds. It is often chronic and fluctuates with stress and season.

Question 42Disorders and Diseases of the Skin

Keratosis pilaris presents as:

  1. Silvery plaques on the scalp and elbows
  2. Rough follicular plugs on the arms Correct answer.
  3. Fluid-filled vesicles scattered on the trunk
  4. Honey-colored crusts around the nose

Explanation

Keratosis pilaris occurs when keratin blocks hair follicles, creating small rough bumps on the outer arms and thighs. It is harmless and improves with gentle exfoliation and consistent moisturizing.

Question 43Disorders and Diseases of the Skin

Vitiligo results from:

  1. A bacterial infection of the follicles
  2. Permanent dilation of capillaries
  3. Destruction of melanocytes Correct answer.
  4. Overproduction of melanin

Explanation

Vitiligo is an autoimmune condition in which melanocytes are destroyed, producing well-defined depigmented patches. Because those areas lack melanin, strict sun protection is essential.

Question 44Disorders and Diseases of the Skin

Which description is most consistent with squamous cell carcinoma?

  1. A soft, freely movable lump under the skin
  2. A flat tan patch with sharply defined borders
  3. A pearly papule with fine visible vessels
  4. A firm scaly nodule that may bleed Correct answer.

Explanation

Squamous cell carcinoma arises from epidermal keratinocytes and often appears as a firm, hyperkeratotic or crusted nodule that may ulcerate and bleed. It can metastasize if untreated, so such lesions are referred promptly.

Question 45Disorders and Diseases of the Skin

A waxy, sharply demarcated growth that appears stuck onto the skin of an older adult is most likely:

  1. Melanoma
  2. Actinic keratosis
  3. Basal cell carcinoma
  4. Seborrheic keratosis Correct answer.

Explanation

Seborrheic keratosis is a benign epidermal growth that looks like a waxy or crusty plaque stuck onto the skin. It needs no treatment unless it changes, but any changing or bleeding lesion should be referred for evaluation.

Question 46Disorders and Diseases of the Skin

A keloid is distinguished from a hypertrophic scar because a keloid:

  1. Extends beyond the original wound margin Correct answer.
  2. Remains within the boundary of the original wound
  3. Contains no collagen
  4. Fades completely within a few weeks

Explanation

A keloid is an overgrowth of scar tissue that spreads beyond the original injury site, whereas a hypertrophic scar stays within the wound boundary. Keloids are more common in darker skin types and on the chest and earlobes.

Question 47Disorders and Diseases of the Skin

Milia are best described as:

  1. Open comedones filled with oxidized sebum
  2. Raised collections of clear fluid
  3. Small keratin-filled cysts under the skin Correct answer.
  4. Inflamed follicles caused by bacteria

Explanation

Milia form when keratin becomes trapped beneath the epidermis, creating tiny hard white cysts that are not inflamed. They are often removed with proper extraction technique by a physician or licensed professional.

Question 48Disorders and Diseases of the Skin

A closed, elevated lesion filled with clear fluid and measuring about 0.8 cm across is best classified as a:

  1. Bulla
  2. Wheal
  3. Pustule
  4. Vesicle Correct answer.

Explanation

A vesicle is a circumscribed, elevated lesion containing clear fluid that measures up to one centimeter. A similar fluid-filled lesion larger than one centimeter is termed a bulla.

Question 49Skin Analysis, Consultation, and Treatment Planning

A client's skin always burns and never tans, with very pale skin, light eyes, and freckles. Which Fitzpatrick skin type does this describe?

  1. Type I Correct answer.
  2. Type V
  3. Type II
  4. Type III

Explanation

Fitzpatrick type I is the fairest category: it always burns, never tans, and often shows freckles with light eyes and hair. The scale runs from I (most sun-sensitive) to VI (least sun-sensitive), so a client who never tans belongs in the lowest category.

Question 50Skin Analysis, Consultation, and Treatment Planning

Shine is visible across the forehead, nose, chin, and both cheeks a few hours after cleansing. Which skin type does this most likely indicate?

  1. Oily Correct answer.
  2. Combination
  3. Normal
  4. Dry

Explanation

Oily skin shows shine over the entire face because sebaceous activity is high in all regions, including the cheeks. Shine limited to the center of the face points to combination skin, while dry skin shows no shine and often feels tight.