What is keratin?

Keratin is a fibrous structural protein found in the outer layer of human skin, hair, and nails. It is also present in the epithelial cells that line the internal organs and glands in the body. Keratin is known for its strength and durability, providing support and protection for these tissues.

In the skin, keratin plays a role in forming a barrier that helps protect against environmental stressors such as UV radiation, chemicals, and pathogens. In hair and nails, keratin provides structure and strength, making them resistant to damage and breakage.

Keratin is produced by specialized cells called keratinocytes and is constantly being produced and replaced as old cells are shed. Factors such as genetics, diet, and lifestyle can affect the production and quality of keratin in the body.

Keratin is also used in cosmetic and hair care products to help strengthen and improve the appearance of hair and nails. Additionally, keratin treatments are popular for smoothing and straightening hair.

Overall, keratin plays a vital role in maintaining the health and integrity of the skin, hair, and nails, and is an important component of the body's overall structural framework.