Ace the Utah Esthetics Written Exam 2025 – Glam Up Your Skills and Shine On!

Hyaluronic acid is a naturally occurring substance in the body that plays a crucial role in retaining moisture in the skin. It has a unique ability to hold up to 1,000 times its weight in water, making it a powerful humectant. This quality helps to keep the skin hydrated, plump, and youthful, which is essential for maintaining overall skin health and appearance.

Collagen, although important for skin structure and elasticity, primarily provides firmness and support rather than directly influencing moisture levels. Elastin contributes to the skin's elasticity and ability to stretch, but it does not play a role in moisture retention. Keratin is a key structural protein that forms the protective outer layer of the skin and helps with barrier function but does not have the hydrating properties associated with hyaluronic acid. Understanding these distinctions highlights why hyaluronic acid is the definitive substance responsible for skin moisture retention.