Which component is responsible for 70% of skin integrity?

Collagen is a crucial protein found in the skin that is primarily responsible for maintaining its structural integrity, strength, and elasticity. It plays a major role in skin health by providing the framework that supports skin cells and contributes significantly to the skin's resilience. As the dominant protein in the dermis, collagen accounts for about 70% of the skin's dry weight, making it essential for overall skin integrity.

In contrast, elastin provides elasticity and helps the skin return to its original shape after stretching, while keratin is a key protein in the outer layer of skin that protects against damage and water loss. Hyaluronic acid, although important for hydration and adding volume to the skin, does not contribute to structural integrity in the same way.