Keratin (5% in Water) is widely used in the cosmetic and personal care industry due to its ability to strengthen and repair hair. It is commonly found in hair care products such as shampoos, conditioners, and hair masks, where it helps to restore elasticity, reduce breakage, and improve overall hair texture. The keratin penetrates the hair shaft, filling in gaps and smoothing the cuticle, which results in shinier, smoother, and more manageable hair. Additionally, it is used in treatments designed to repair damaged or chemically treated hair, providing a protective layer that enhances resilience and reduces frizz. Its hydrating properties also make it beneficial for maintaining moisture balance in both hair and scalp. Furthermore, keratin is utilized in skin care products to restore and hydrate dry skin. In the cosmeceutical industry, it serves as a key ingredient in various beauty formulations such as skin creams, lotions, and serums, helping to improve skin condition for a healthier, smoother appearance.