I85PREP
⌘ K
IA Esthetician study materials
IA Esthetician study resources

IA Esthetician practice questions

One question at a time. Build your IA Esthetician understanding.

First 50 of 200 questions. Each one lists the choices, the correct answer, and an explanation. The checker at the top of this page saves progress in this browser when it is available.

Continue in the practice tool above to load more questions, 50 at a time.

Question 1Skin Care and Esthetics Fundamentals

Which layer of the epidermis is composed of cells that are actively dividing and is often described as the germinative layer?

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

Explanation

The stratum basale sits directly above the dermis and contains keratinocytes that undergo mitosis, supplying new cells to the layers above. Because cell division happens here, it is called the germinative or basal layer.

Question 2Skin Care and Esthetics Fundamentals

A client's skin produces excess sebum and has enlarged pores across the nose and forehead. Which gland type is most directly responsible for this condition?

  1. Sebaceous glands Correct answer.
  2. Eccrine sweat glands
  3. Ceruminous glands
  4. Apocrine sweat glands

Explanation

Sebaceous glands secrete sebum, an oily substance that lubricates skin and hair. When these glands are overactive, the result is oily skin and congested, enlarged pores, especially in the T-zone.

Question 3Skin Care and Esthetics Fundamentals

What is the primary function of melanin in the skin?

  1. To bind water in the dermis
  2. To provide tensile strength to the dermis
  3. To waterproof the stratum corneum
  4. To absorb UV radiation and protect DNA Correct answer.

Explanation

Melanin is produced by melanocytes and transferred to keratinocytes, where it absorbs ultraviolet radiation and shields nuclear DNA from damage. This is why sun exposure stimulates increased pigment production.

Question 4Skin Care and Esthetics Fundamentals

Which skin type is best described as having a tight feeling, visible flaking, and fine lines from lack of oil?

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

Explanation

Dry skin lacks sufficient sebum and often feels tight and rough, with flaking and accentuated fine lines. These signs reflect a deficient lipid barrier rather than excess oil.

Question 5Skin Care and Esthetics Fundamentals

Which pH range best describes healthy adult skin surface?

  1. Around 8.5
  2. Around 5.5 Correct answer.
  3. Around 11.0
  4. Around 2.0

Explanation

The skin surface is mildly acidic, generally in the range of about 4.5 to 5.5, which supports barrier function and beneficial flora. This acidity is often called the acid mantle.

Question 6Skin Care and Esthetics Fundamentals

What is the primary purpose of a patch test before a chemical exfoliation service?

  1. To identify a possible adverse reaction to the product Correct answer.
  2. To evaluate pore size
  3. To determine the client's skin type
  4. To measure the skin's oil production

Explanation

A patch test applies a small amount of product to a discreet area to check for allergic or irritant reactions before full treatment. It protects the client from unexpected redness, burning, or sensitization.

Question 7Skin Care and Esthetics Fundamentals

Which of the following is a primary function of the skin's barrier layer?

  1. Producing red blood cells
  2. Preventing water loss and entry of irritants Correct answer.
  3. Regulating body temperature through shivering
  4. Storing bile

Explanation

The outermost epidermal barrier limits transepidermal water loss while blocking microorganisms and irritants from entering. Its integrity depends on corneocytes embedded in a lipid matrix.

Question 8Skin Care and Esthetics Fundamentals

Which type of skin lesion is a small, solid, raised bump under 1 cm that is commonly seen in acne and insect bites?

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

Explanation

A papule is a small, solid, elevated lesion without visible fluid, typical of inflamed acne. Its solid nature distinguishes it from fluid-filled or flat lesions.

Question 9Skin Care and Esthetics Fundamentals

During a skin analysis, a client shows an oily T-zone with normal cheeks. Which skin type should the esthetician document?

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

Explanation

Combination skin is characterized by an oily central T-zone and normal or drier peripheral areas such as the cheeks. Treatment is usually tailored zone by zone.

Question 10Skin Care and Esthetics Fundamentals

Which ingredient is a beta hydroxy acid commonly used to exfoliate inside the pore?

  1. Salicylic acid Correct answer.
  2. Lactic acid
  3. Hyaluronic acid
  4. Glycolic acid

Explanation

Salicylic acid is lipid soluble, allowing it to penetrate sebum-filled follicles and exfoliate within the pore. This makes it useful for acne-prone and congested skin.

Question 11Skin Care and Esthetics Fundamentals

A client with rosacea-prone skin requests a hot steam treatment. What is the most appropriate esthetician response?

  1. Avoid heat and use lukewarm or cool compresses instead Correct answer.
  2. Apply a strong scrub before steaming
  3. Increase steam temperature to open pores faster
  4. Proceed with full steam as requested

Explanation

Heat is a common trigger for rosacea flare-ups, so avoiding steam and using gentle, cooling methods helps prevent vasodilation and redness. The esthetician should adapt the service to protect the client's skin.

Question 12Skin Care and Esthetics Fundamentals

Which of the following best describes the role of collagen in the dermis?

  1. It provides structural support and strength Correct answer.
  2. It produces melanin
  3. It carries oxygen in the blood
  4. It secretes sebum

Explanation

Collagen is a fibrous protein that gives the dermis its tensile strength and structural framework. Its degradation over time contributes to sagging and wrinkles.

Question 13Skin Care and Esthetics Fundamentals

An esthetician is selecting a cleanser for a client with very dry, barrier-compromised skin. Which formulation is most suitable?

  1. A foaming cleanser with high surfactant content
  2. A cream cleanser with ceramides and no fragrance Correct answer.
  3. A bar soap with a high pH
  4. An astringent toner applied as a cleanser

Explanation

Cream cleansers with barrier-supporting lipids such as ceramides clean gently without stripping natural oils. Avoiding fragrance reduces the risk of irritation in compromised skin.

Question 14Skin Care and Esthetics Fundamentals

Which structure anchors the epidermis to the dermis and is affected in blistering disorders?

  1. Sebaceous duct
  2. Arrector pili muscle
  3. Stratum corneum
  4. Basement membrane zone Correct answer.

Explanation

The basement membrane zone is the junction between epidermis and dermis, containing adhesion proteins that hold the layers together. Disruption of these proteins leads to separation and blister formation.

Question 15Skin Care and Esthetics Fundamentals

A client reports stinging and redness after using a new retinoid. Which recommendation best reflects sound esthetic practice?

  1. Apply the retinoid twice daily to speed results
  2. Stop the product and refer to a physician if irritation persists Correct answer.
  3. Increase the concentration to build tolerance
  4. Combine with a strong acid peel immediately

Explanation

Irritation from a retinoid should be managed by reducing or stopping use and supporting the barrier. Persistent or severe reactions warrant medical referral, which is outside the esthetician's scope.

Question 16Skin Care and Esthetics Fundamentals

Which of these is the correct order of the epidermal layers from deepest to most superficial?

  1. Basale, spinosum, granulosum, lucidum, corneum Correct answer.
  2. Granulosum, basale, corneum, spinosum, lucidum
  3. Spinosum, basale, lucidum, corneum, granulosum
  4. Corneum, lucidum, granulosum, spinosum, basale

Explanation

Keratinocytes mature as they move outward: basal, spinous, granular, then (in thick skin) the lucid layer, and finally the cornified layer. This sequence reflects the progression from dividing cells to fully keratinized cells.

Question 17Skin Care and Esthetics Fundamentals

What distinguishes a closed comedo from an open comedo?

  1. A closed comedo is always infected with bacteria
  2. A closed comedo is inflamed and painful
  3. An open comedo contains no sebum
  4. A closed comedo has a blocked follicle covered by skin, while an open comedo is exposed to air and darkens Correct answer.

Explanation

A closed comedo, or whitehead, forms when a follicle is plugged and covered by the epidermis. An open comedo, or blackhead, is exposed to air, and oxidation darkens its contents.

Question 18Skin Care and Esthetics Fundamentals

An esthetician must decide whether a lesion is a contraindication for treatment. Which finding warrants stopping the service and referring the client?

  1. Mild diffuse redness after cleansing
  2. A single closed comedo on the chin
  3. A few small whiteheads near the nose
  4. A pearly nodule with irregular borders on the cheek Correct answer.

Explanation

A pearly nodule with irregular borders is a suspicious lesion that could indicate skin cancer and must be evaluated by a physician. Estheticians do not diagnose but should recognize warning signs and refer.

Question 19Skin Care and Esthetics Fundamentals

Which factor most increases transepidermal water loss in a client's skin?

  1. Over-cleansing with hot water and harsh surfactants Correct answer.
  2. A well-hydrated lipid barrier
  3. Humid environmental conditions
  4. Use of a ceramide moisturizer

Explanation

Hot water and harsh surfactants strip intercellular lipids and natural moisturizing factors, weakening the barrier and increasing water loss. This leads to tightness and dryness.

Question 20Skin Care and Esthetics Fundamentals

Which massage movement is typically used at the beginning and end of a facial to promote relaxation and ease into or out of treatment?

  1. Tapotement
  2. Petrissage
  3. Vibration
  4. Effleurage Correct answer.

Explanation

Effleurage consists of smooth, gliding strokes that open and close a massage sequence and aid product application. Its gentle, continuous motion supports relaxation and circulation.

Question 21Skin Care and Esthetics Fundamentals

Which statement correctly describes the difference between a humectant and an emollient?

  1. Humectants are oils, while emollients are sugars
  2. Humectants draw water to the skin, while emollients soften and smooth the surface Correct answer.
  3. Humectants seal the skin, while emollients add water
  4. Humectants exfoliate, while emollients cleanse

Explanation

Humectants such as glycerin attract and bind water, while emollients such as esters and oils fill gaps between corneocytes to soften and smooth skin. They serve complementary roles in moisturizers.

Question 22Skin Care and Esthetics Fundamentals

A client with acne is using a prescribed topical medication. What is the most appropriate timing for an esthetician to perform a deep-cleansing facial?

  1. On the same day as a strong peel
  2. Immediately after the client applies the medication
  3. Only if the client skips the medication for a week
  4. After confirming the medication and any restrictions with the client's physician Correct answer.

Explanation

Prescription medications can increase photosensitivity and irritation, so coordination with the prescribing physician ensures the service is safe. The esthetician should verify the product and any timing restrictions before treatment.

Question 23Skin Care and Esthetics Fundamentals

An esthetician notices that a client's skin becomes erythematous and edematous within minutes of applying an enzyme mask. What is the correct immediate action?

  1. Apply a warm towel to increase circulation
  2. Remove the product, cool the skin, and discontinue the service Correct answer.
  3. Continue and document the reaction afterward
  4. Add a second layer to neutralize the reaction

Explanation

Rapid erythema and edema suggest an adverse reaction, so the product must be removed promptly and the skin cooled to limit the response. The service should be stopped and the event documented, with medical referral if severe.

Question 24Skin Care and Esthetics Fundamentals

Which combination of findings best supports a recommendation to avoid mechanical exfoliation?

  1. Dry skin with flaking but intact barrier
  2. Oily skin with closed comedones
  3. Active inflamed papules with recent scratching and broken skin Correct answer.
  4. Normal skin with mild dullness

Explanation

Mechanical exfoliation over inflamed lesions and broken skin can spread bacteria, cause bleeding, and delay healing. Gentle chemical options or postponement are safer until inflammation resolves.

Question 25Skin Care and Esthetics Fundamentals

An esthetician is evaluating whether a client's pigmented spot should be treated in the salon. Which feature most strongly indicates the need for medical referral?

  1. Symmetry and uniform light brown color
  2. Recent change in size, shape, and color with irregular borders Correct answer.
  3. Mild tanning after sun exposure
  4. A stable freckle present since childhood

Explanation

A lesion that is changing and shows irregular borders raises concern for malignancy under the ABCDE warning signs. Estheticians should refer such findings rather than treat them cosmetically.

Question 26Skin Care and Esthetics Fundamentals

Which layer of the epidermis is responsible for continuous cell renewal through mitosis?

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

Explanation

The stratum basale is the deepest epidermal layer, containing stem cells that divide by mitosis to produce new keratinocytes. These cells then migrate upward and differentiate into the upper layers. The other layers consist of cells that are no longer actively dividing.

Question 27Skin Care and Esthetics Fundamentals

Which skin type is characterized by a greasy appearance over the entire face, enlarged pores, and frequent breakouts?

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

Explanation

Oily skin results from overactive sebaceous glands, leading to excess sebum production across the whole face. This causes shine, enlarged pores, and a tendency for acne. Dry skin lacks oil and moisture, combination skin has both oily and dry areas, and normal skin is balanced.

Question 28Skin Care and Esthetics Fundamentals

What is the primary function of sebum in the skin?

  1. To provide a waterproof barrier and lubricate the skin Correct answer.
  2. To detect touch and pressure
  3. To regulate body temperature
  4. To produce melanin for pigmentation

Explanation

Sebum is an oily substance secreted by sebaceous glands that mixes with sweat and lipids to form the acid mantle. It lubricates the skin, helps retain moisture, and provides a waterproof barrier. It does not regulate temperature, produce melanin, or detect sensations.

Question 29Skin Care and Esthetics Fundamentals

Which vitamin is essential for normal keratinization and is often used in esthetic treatments to promote cell turnover?

  1. Vitamin E
  2. Vitamin C
  3. Vitamin D
  4. Vitamin A Correct answer.

Explanation

Vitamin A (retinol and its derivatives) regulates keratinization and accelerates epidermal cell turnover. It is commonly used in esthetics to improve texture and reduce signs of aging. Vitamins C and E are antioxidants, and vitamin D is involved in calcium metabolism.

Question 30Skin Care and Esthetics Fundamentals

Which muscle is responsible for causing

  1. Orbicularis oculi
  2. Masseter
  3. Platysma
  4. Frontalis Correct answer.

Explanation

The frontalis muscle covers the forehead and is responsible for raising the eyebrows and creating horizontal forehead wrinkles. It is often treated with neuromodulators in esthetic medicine. The masseter is a chewing muscle, the orbicularis oculi closes the eyelids, and the platysma tenses the neck.

Question 31Skin Care and Esthetics Fundamentals

What is the primary purpose of a toner in a facial treatment?

  1. To restore the skin's pH balance after cleansing Correct answer.
  2. To remove makeup and surface oil
  3. To deeply hydrate and nourish the skin
  4. To provide sun protection

Explanation

Toners are applied after cleansing to help remove any residual cleanser and restore the skin's natural acidic pH, which supports the acid mantle. They can also provide mild hydration or soothing benefits depending on formulation. They are not primarily for makeup removal, sun protection, or deep nourishment.

Question 32Skin Care and Esthetics Fundamentals

Which of the following is a contraindication for performing a facial massage?

  1. Recent facial surgery Correct answer.
  2. Mild dehydration
  3. Dry skin
  4. Oily skin

Explanation

Recent facial surgery is a contraindication because massage could disrupt healing tissues, increase swelling, or cause complications. Dry skin, oily skin, and mild dehydration are skin conditions that can be addressed with appropriate massage techniques and products.

Question 33Skin Care and Esthetics Fundamentals

Which of the following is the correct order of steps for a basic facial treatment?

  1. Exfoliate, cleanse, tone, mask, massage, moisturize
  2. Cleanse, exfoliate, tone, massage, mask, moisturize Correct answer.
  3. Cleanse, tone, exfoliate, massage, mask, moisturize
  4. Cleanse, massage, exfoliate, tone, mask, moisturize

Explanation

A basic facial follows a logical sequence: cleanse to remove impurities, exfoliate to remove dead cells, tone to restore pH, massage to relax and stimulate, apply a mask to address specific needs, and finish with moisturizer to seal in hydration. This order ensures each step builds on the previous one without interference.

Question 34Skin Care and Esthetics Fundamentals

Which skin condition is characterized by inflammation, redness, and pustules, and is often triggered by stress, hormonal changes, and certain foods?

  1. Psoriasis
  2. Eczema
  3. Acne vulgaris Correct answer.
  4. Rosacea

Explanation

Acne vulgaris is an inflammatory condition of the pilosebaceous unit, presenting with comedones, papules, pustules, and sometimes nodules. It is commonly triggered by hormonal fluctuations, stress, and certain dietary factors. Rosacea primarily causes flushing and telangiectasia, eczema is itchy and dry, and psoriasis presents with scaly plaques.

Question 35Skin Care and Esthetics Fundamentals

An esthetician is performing a skin analysis and observes that the client's skin has fine lines, loss of elasticity, and a dull complexion. Which skin condition is most likely?

  1. Acne-prone skin
  2. Dehydrated skin
  3. Photoaged skin Correct answer.
  4. Sensitive skin

Explanation

Photoaging results from cumulative UV exposure and is characterized by fine lines, loss of elasticity, uneven pigmentation, and a dull appearance. Dehydrated skin lacks water and may feel tight, sensitive skin reacts easily, and acne-prone skin has breakouts. The combination of lines, laxity, and dullness strongly suggests photoaging.

Question 36Skin Care and Esthetics Fundamentals

Which ingredient is commonly used in esthetic products as a humectant to attract and retain water in the skin?

  1. Glycerin Correct answer.
  2. Squalane
  3. Dimethicone
  4. Petrolatum

Explanation

Glycerin is a classic humectant that draws water from the environment and deeper skin layers into the stratum corneum, improving hydration. Dimethicone, petrolatum, and squalane are occlusives or emollients that form a barrier to prevent water loss rather than attracting water.

Question 37Skin Care and Esthetics Fundamentals

During a facial, a client with sensitive skin experiences mild stinging after the application of a product. What is the most appropriate immediate action for the esthetician?

  1. Apply a stronger active ingredient to counteract the reaction
  2. Continue the treatment and monitor for worsening
  3. Ignore it as it is a normal part of the treatment
  4. Remove the product and apply a soothing compress Correct answer.

Explanation

When a client experiences stinging, the esthetician should immediately remove the product to prevent further irritation and apply a soothing compress to calm the skin. Continuing or ignoring the reaction could worsen the sensitivity, and applying a stronger active is contraindicated.

Question 38Skin Care and Esthetics Fundamentals

Which of the following best describes the mechanism of action of alpha hydroxy acids (AHAs) in skin care?

  1. They block acetylcholine release to relax muscles
  2. They dissolve sebum within the pore
  3. They inhibit melanin production
  4. They loosen the bonds between dead skin cells to promote exfoliation Correct answer.

Explanation

AHAs work by weakening the ionic bonds that hold dead corneocytes together, facilitating desquamation and revealing smoother skin. They are water-soluble and primarily affect the surface of the skin. BHAs like salicylic acid are lipid-soluble and penetrate pores to dissolve sebum.

Question 39Skin Care and Esthetics Fundamentals

An esthetician is selecting a moisturizer for a client with oily, acne-prone skin. Which formulation is most appropriate?

  1. A heavy cream containing petrolatum
  2. A rich ointment with lanolin
  3. An oil-based balm with essential oils
  4. A lightweight gel labeled non-comedogenic Correct answer.

Explanation

For oily, acne-prone skin, a lightweight, non-comedogenic gel moisturizer provides hydration without adding excess oil or clogging pores. Heavy creams, balms, and ointments can be too occlusive and may exacerbate acne.

Question 40Skin Care and Esthetics Fundamentals

Which of the following is a physical (mechanical) exfoliant?

  1. Glycolic acid
  2. Salicylic acid
  3. Jojoba beads Correct answer.
  4. Retinol

Explanation

Jojoba beads are small, smooth particles that physically scrub away dead skin cells when massaged on the skin. Glycolic acid, salicylic acid, and retinol are chemical exfoliants that work by dissolving bonds or accelerating cell turnover.

Question 41Skin Care and Esthetics Fundamentals

What is the primary function of the acid mantle?

  1. To provide structural support to the dermis
  2. To produce melanin for UV protection
  3. To maintain an acidic pH that inhibits bacterial growth Correct answer.
  4. To regulate sebum production

Explanation

The acid mantle is a thin film on the skin surface composed of sebum, sweat, and lipids, with a pH around 4.5–5.5. This acidity helps inhibit the growth of pathogenic bacteria and supports barrier function. It does not provide structural support, produce melanin, or regulate sebum.

Question 42Skin Care and Esthetics Fundamentals

Which of the following is the correct technique for performing effleurage during a facial massage?

  1. Slow, gliding strokes with light to medium pressure Correct answer.
  2. Light, rhythmic tapping with the fingertips
  3. Rapid, circular friction movements
  4. Firm, kneading movements on the muscle belly

Explanation

Effleurage consists of slow, gliding strokes used to warm the skin, improve circulation, and relax the client. It is typically performed with light to medium pressure and is often used at the beginning and end of a massage. Tapping is tapotement, kneading is petrissage, and friction is a different technique.

Question 43Skin Care and Esthetics Fundamentals

An esthetician is reviewing a client's medication history and notes the use of isotretinoin (Accutane). What is the most appropriate action regarding facial treatments?

  1. Use a high-frequency device to treat acne
  2. Postpone all facial treatments until the medication is discontinued and a physician approves Correct answer.
  3. Perform a deep cleansing facial with extractions
  4. Proceed with a gentle facial but avoid exfoliation

Explanation

Isotretinoin significantly increases skin fragility and reduces healing capacity, making the skin highly susceptible to irritation and scarring from esthetic treatments. Estheticians should postpone all facial treatments until the medication is discontinued and a physician has approved resumption of services. Gentle facials, extractions, and high-frequency treatments are still contraindicated.

Question 44Skin Care and Esthetics Fundamentals

Which of the following best describes the difference between a papule and a pustule?

  1. A papule is larger than 1 cm, while a pustule is smaller
  2. A papule is a solid raised lesion, while a pustule contains pus Correct answer.
  3. A papule is flat, while a pustule is raised
  4. A papule contains pus, while a pustule is a solid bump

Explanation

A papule is a small, solid, elevated lesion without visible fluid, such as an inflamed acne lesion. A pustule is an elevated lesion containing pus, often with a white or yellow center. The key distinction is the presence of pus in a pustule.

Question 45Skin Care and Esthetics Fundamentals

A client with a history of cold sores (herpes simplex) is scheduled for a lip wax. What is the most appropriate esthetician response?

  1. Proceed with the wax as long as the client feels fine
  2. Ask the client to reschedule if there are active lesions or if they feel an outbreak coming on Correct answer.
  3. Double-dip the wax sticks to ensure cleanliness
  4. Apply a topical anesthetic and proceed

Explanation

Waxing can trigger a herpes outbreak due to trauma to the skin. If the client has active lesions or prodromal symptoms (tingling, itching), the service should be postponed to avoid spreading the virus and causing discomfort. Proceeding or double-dipping is unsafe and unprofessional.

Question 46Skin Care and Esthetics Fundamentals

Which of the following is a function of the arrector pili muscle?

  1. To detect touch
  2. To produce sebum
  3. To cause hair to stand upright in response to cold or emotion Correct answer.
  4. To regulate sweat production

Explanation

The arrector pili is a tiny muscle attached to the hair follicle. When it contracts due to cold or emotional stress, it causes the hair to stand up, producing goosebumps. It does not produce sebum, detect touch, or regulate sweat.

Question 47Skin Care and Esthetics Fundamentals

An esthetician is analyzing a client's skin and notices a pearly, translucent bump with telangiectasia on the cheek. What is the most appropriate action?

  1. Refer the client to a dermatologist for evaluation Correct answer.
  2. Apply a chemical peel to the area
  3. Perform extractions on the lesion
  4. Treat with a high-frequency device

Explanation

A pearly, translucent bump with visible blood vessels is a classic description of basal cell carcinoma, a type of skin cancer. Estheticians must not treat suspicious lesions and should refer the client to a dermatologist for proper diagnosis and management. Any device or peel could be harmful.

Question 48Skin Care and Esthetics Fundamentals

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

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

Explanation

The dermis is the middle layer of the skin and contains blood vessels, lymph vessels, nerve endings, sweat glands, sebaceous glands, and hair follicles. The epidermis is avascular, the hypodermis is mostly fat, and the stratum corneum is the outermost dead layer.

Question 49Skin Care and Esthetics Fundamentals

A client presents with a rash that has well-defined borders, silvery scales, and is located on the elbows and knees. The client asks if a facial can help. What is the esthetician's best response?

  1. Explain that this appears to be psoriasis and suggest a medical referral before any treatment Correct answer.
  2. Recommend a strong exfoliation to remove the scales
  3. Proceed with a facial using essential oils
  4. Apply a steroid cream and then perform the facial

Explanation

The description is consistent with psoriasis, an autoimmune condition that requires medical management. Estheticians should not treat undiagnosed skin conditions and should refer the client to a physician. Exfoliation, essential oils, or applying steroids are outside the esthetician's scope and could worsen the condition.

Question 50Skin Care and Esthetics Fundamentals

Which of the following best explains why the stratum corneum is an effective barrier against water loss?

  1. It contains living cells that actively pump water
  2. It is highly vascular and reabsorbs water
  3. It consists of dead keratinized cells embedded in a lipid matrix Correct answer.
  4. It produces sebum continuously

Explanation

The stratum corneum is composed of corneocytes (dead, keratin-filled cells) surrounded by a lipid matrix rich in ceramides, cholesterol, and fatty acids. This