Milady Esthetics State Board Practice Test

Which type of acid is most effective for skin peels?

1. Acids with a high pH

2. Acids with a neutral pH

3. Acids with a low pH

4. All types of acids are equally effective

The correct answer is: Acids with a low pH

Acids with a low pH are the most effective for skin peels because they have a higher concentration of hydrogen ions, which allows them to penetrate the skin more effectively and create a more significant exfoliating effect. Low pH acids, such as glycolic acid and salicylic acid, are often used in chemical peels due to their ability to break down the bonds between dead skin cells, promoting cell turnover and revealing fresher, healthier skin underneath. In contrast, acids with a high or neutral pH do not possess the same level of potency for skin peeling. Higher pH acids can be less penetrating and may not facilitate the desired exfoliation. Additionally, the idea that all types of acids are equally effective is misleading, as the pH level directly influences an acid's efficacy in cosmetic procedures. The careful selection of lower pH acids is critical for achieving the desired results in skin treatments.