What is the primary role of keratin in the skin?

Keratin plays a crucial role in the skin, particularly in providing strength and water resistance. This fibrous protein is a key component of the epidermis, the outermost layer of skin, where it forms a protective barrier that helps prevent water loss and shields the underlying tissues from environmental damage.

Keratin's structure allows it to contribute to the mechanical stability of the skin, making it resilient against physical stress and abrasion. Its water-resistant properties are essential for maintaining hydration and ensuring that the delicate cells beneath the skin remain protected from dehydration and infections. By acting as a barrier, keratin assists in maintaining the skin's integrity and overall health, which is vital for its protective functions. Therefore, the primary role of keratin is indeed related to strength and water resistance.