Glow Up and Ace the Michigan Esthetician State Board Test 2026 – Beautify Your Future!

The primary substance that skin absorbs to maintain its health is water. The skin's outer layer, known as the stratum corneum, relies heavily on hydration to maintain its barrier function, elasticity, and overall appearance. Adequate water retention in the skin helps prevent dryness, flakiness, and dullness, which can lead to issues like premature aging and irritation.

While oxygen is vital for cellular respiration and overall skin health, it does not penetrate the skin to the same extent as water. Similarly, while nutrition plays a significant role in skin health, it is generally delivered through the bloodstream rather than being directly absorbed through the skin. Heat is important for various functions, like promoting circulation, but it does not contribute to the skin’s fundamental health like water does. Thus, the emphasis on water underscores its critical role in maintaining healthy, functioning skin.