Skin Analysis and Contraindications

Key Takeaways

  • Skin analysis starts with a written intake/consultation form documenting health history, medications, allergies, and informed consent.
  • Analyze cleansed skin under a magnifying lamp and a Wood's lamp; the Wood's lamp uses UV light to reveal oil, dehydration, and pigment issues invisible to the eye.
  • An ABSOLUTE contraindication means no service at all; a RELATIVE contraindication means proceed only with modification or physician clearance.
  • Isotretinoin (Accutane) is an absolute contraindication for waxing and peels — wait at least 6 months (often longer) after the client finishes the medication.
  • Estheticians must refer (not treat): suspicious moles, contagious infections, undiagnosed lesions, and any condition outside skin-care scope.
Last updated: June 2026

Why Analysis Comes Before Every Service

Skin analysis is the systematic evaluation of a client's skin to determine its type, condition, and any contraindications before recommending a treatment. It protects the client from harm and protects the esthetician from liability. On the Texas practical and written exams, performing analysis BEFORE service — and documenting it — is a graded, non-negotiable step.

The Consultation and Intake Form

Every service begins with a client intake / consultation form and a conversation. The form documents:

  • Health history and current medical conditions.
  • All medications (prescription and over-the-counter), because many affect the skin.
  • Known allergies and product sensitivities.
  • Previous treatments, reactions, and the client's goals.
  • Informed consent — the client's signature acknowledging the service, its risks, and aftercare.

Reviewing this form is also the first step of infection control: it flags contagious conditions before you touch the skin. A patch test (applying a small amount of product 24–48 hours ahead) is used when allergy is a concern.

The Analysis Workflow (Step by Step)

  1. Cleanse the skin — you cannot analyze through makeup, sunscreen, or oil.
  2. Drape and protect the client's hair and eyes.
  3. Examine under a magnifying (mag) lamp — a 5x or 10x lighted loupe that reveals texture, pore size, comedones, and fine lines.
  4. Examine under a Wood's lamp — a handheld ultraviolet (UV) light used in a darkened room. Different conditions fluoresce different colors, revealing problems the naked eye misses.
  5. Palpate and assess elasticity, oiliness, hydration, and sensitivity.
  6. Determine skin type, Fitzpatrick phototype, conditions, and contraindications.
  7. Recommend a treatment plan and document everything.

Reading the Wood's Lamp

The Wood's lamp is a classic exam topic. Under its UV glow, approximate fluorescence colors are:

Appearance under Wood's lampIndicates
Blue-whiteHealthy, normal skin
Light violet / purpleThin or dehydrated skin
Bright fluorescent (yellow/pink-orange)Oily areas, comedones, acne bacteria
BrownHyperpigmentation / sun damage
Blue-white spotsDead skin cell buildup / thick corneum

Absolute vs. Relative Contraindications

A contraindication is any condition that makes a treatment inadvisable or unsafe. The exam draws a sharp line between two kinds:

  • Absolute contraindication — the service must NOT be performed at all; the risk is too high. Example: an active herpes outbreak, a contagious infection, or a client on isotretinoin.
  • Relative contraindication — the service MAY proceed, but only with modification, extra caution, or written physician clearance. Example: controlled diabetes, pregnancy, or recent minor sun exposure may call for a gentler approach.

High-Yield Contraindications to Memorize

  • Isotretinoin (Accutane) — thins skin and slows healing. It is an absolute contraindication for waxing, peels, and microdermabrasion. The client must be OFF the medication for at least 6 months (many protocols require up to a year) before such services.
  • Blood thinners (anticoagulants) — increase bruising and bleeding; avoid aggressive extractions, waxing, and microdermabrasion.
  • Retinoids / strong actives, recent peels, or laser — leave skin fragile; avoid stacking aggressive services.
  • Pregnancy — avoid certain electrical modalities (galvanic, high-frequency) and strong chemicals; many treatments need caution or a doctor's note.
  • Pacemaker or epilepsy — contraindicate high-frequency and some electrical devices.
  • Recent sunburn, open wounds, active rashes, or fever — no service over the affected area.
  • Metal jewelry / implants in the area — remove before using electrical devices to prevent shock or burns.

Documentation and Aftercare

Analysis is not finished until it is written down. The exam expects you to record the skin type, Fitzpatrick phototype, conditions noted, products used, the treatment performed, and the client's response. Good records let you track progress across visits, prove informed consent, and defend against liability claims. A typical service record (often called a SOAP-style or client card note) captures what you observed, what you did, and the home-care plan you recommended.

Aftercare (home-care) advice is part of the service and frequently tested. Standard guidance includes: apply daily broad-spectrum SPF, avoid direct sun and tanning for 24–72 hours after exfoliating treatments, do not pick or scrub treated skin, keep the area clean, and avoid heat (saunas, hot showers) and strong actives immediately after a peel. Sending a client out without aftercare instructions is treated as an incomplete service.

Reading the Whole Client

A strong analysis combines several readings into one plan:

  • Skin type (dry/oily/combination/normal/sensitive) — guides product choice.
  • Fitzpatrick phototype (I–VI) — guides peel depth and light-device safety.
  • Conditions (acne, rosacea, pigmentation, dehydration) — guides the treatment focus.
  • Contraindications (medications, infections, recent procedures) — guides whether to proceed at all.
  • Client goals and budget — guides realistic recommendations.

When these conflict — for example a Fitzpatrick V client with oily, acne-prone skin who wants a strong peel — safety wins: choose the conservative option to avoid post-inflammatory hyperpigmentation, and build up gradually over multiple visits.

When to Refer Out

Always refer the client to a physician or dermatologist, and decline service, for: a suspicious or changing mole (ABCDE signs), any contagious bacterial, viral, or fungal infection, undiagnosed lesions, or anything outside the skin-care scope. Document the referral. Saying "I recommend you see a dermatologist" is the professional, legally safe response — never "I think it's nothing" and never "let me remove that for you."

Common Exam Traps

  • Treating ALL contraindications as absolute. Many (controlled diabetes, pregnancy) are relative and proceed with clearance or modification.
  • Forgetting the Accutane waiting period or thinking gloves make waxing safe on Accutane — it does not; it is absolute.
  • Performing analysis on un-cleansed skin, or skipping the intake form.
  • Diagnosing a condition. Estheticians describe and refer; they never name a disease as a diagnosis.
Test Your Knowledge

A client mentions she finished a course of isotretinoin (Accutane) two months ago and wants a facial wax and a chemical peel. What is the correct response?

A
B
C
D
Test Your Knowledge

Which tool uses ultraviolet light in a darkened room to reveal oil, dehydration, and pigmentation issues that are not visible to the naked eye?

A
B
C
D
Test Your Knowledge

What best describes the difference between an absolute and a relative contraindication?

A
B
C
D