California Cosmetology Written ExamHair RemovalMedium
A client scheduled for a facial wax mentions she has been using a prescription tretinoin (Retin-A) cream nightly on her face for the past two weeks. What should the cosmetologist do?
- AProceed with waxing as usual since tretinoin only affects hair color
- BSubstitute threading for waxing only if the client requests it
- CApply extra wax to compensate for reduced hair growth caused by tretinoin
- DAvoid waxing the treated area since retinoids thin the skin and increase risk of tearing or irritation
Show answer & explanationAnswer & explanation
Correct answer: D. Avoid waxing the treated area since retinoids thin the skin and increase risk of tearing or irritation
Retinoids like tretinoin thin the epidermis and increase skin sensitivity, making waxing likely to cause skin tearing, irritation, or lifting; the service should be avoided on treated skin.
Why the other options are wrong
- A. Tretinoin affects skin thickness and sensitivity, not just hair color, and does pose a waxing risk.
- B. Threading should be recommended regardless of the client's request due to the contraindication.
- C. Extra wax does not address the skin sensitivity risk and could worsen irritation.
Retinoid Contraindication
Topical retinoids (e.g., tretinoin, Retin-A) thin the skin and increase sensitivity, making waxing contraindicated on treated areas due to risk of tearing.
- Common retinoids: tretinoin, retinol, adapalene
- Thins epidermis, increases sensitivity
- Waxing can tear or irritate treated skin
- Alternative: threading or tweezing may be safer
Memory trick: Retinoids make skin 'paper-thin' — no wax allowed