Colorado Esthetician Written Practice Exam

Question: 1 / 400

What substance does the skin absorb to maintain its health?

Lactic acid

The correct answer is lactic acid. Lactic acid is an alpha hydroxy acid (AHA) that is often used in skincare products for its exfoliating and moisturizing properties. It helps to gently exfoliate the skin, promote cell turnover, and improve overall skin texture. Additionally, lactic acid helps to maintain the skin's pH balance and hydration levels, contributing to healthy and radiant skin. Oxygen is essential for cell function but is not typically absorbed through the skin. Salts and sebum do not play a direct role in maintaining the skin's health through absorption.

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Oxygen

Salts

Sebum

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