Utah Esthetician State Board Practice Exam

What is the purpose of using TCA in skin treatments?

1. To hydrate the skin

2. To lighten pigmentation

3. To remove dead skin cells

4. To promote skin tightening

The correct answer is: To remove dead skin cells

TCA, or trichloroacetic acid, is a chemical exfoliant commonly used in skin treatments for its ability to effectively remove dead skin cells. It works by penetrating the upper layers of the skin and causing controlled peeling. This process helps to slough off the damaged outer layer, promoting the growth of new, healthier skin beneath. The exfoliation from TCA can lead to improved skin texture and tone, making it especially beneficial for individuals dealing with issues such as sun damage, fine lines, and acne scars. By focusing on this application, TCA plays a vital role in skin rejuvenation treatments. While other options mention hydration, lightening pigmentation, and skin tightening, these effects are either secondary results of the exfoliation process or related to other treatments and products. For instance, pigmentation lightening typically involves agents like hydroquinone or kojic acid, while hydration is often achieved through moisturizers or hydrative ingredients rather than exfoliants like TCA. Similarly, skin tightening is usually accomplished with techniques such as lasers or radiofrequency treatments rather than through the exfoliation provided by TCA.