Colorado Esthetician Written Practice Exam

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Study for the Colorado Esthetician Written Exam. Prepare with flashcards and multiple-choice questions, each with hints and explanations. Get ready for your esthetician license!

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What substance does the skin absorb to maintain its health?

  1. Lactic acid

  2. Oxygen

  3. Salts

  4. Sebum

The correct answer is: 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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