Keratin Amino Acids

Keratin amino acids are small protein fragments derived from keratin, the primary structural protein found in skin, hair and nails. They function as the molecular building blocks that your skin uses to maintain and repair its structural matrix.In skincare formulations, these amino acids work at a cellular level to support the skin's natural repair processes and help maintain the integrity of the stratum corneum—the outermost layer of skin responsible for barrier function and hydration.

Amino acids are the fundamental units that make up all proteins, including collagen and elastin—the fibres responsible for skin structure. When applied topically, keratin amino acids can be absorbed into the stratum corneum where they support the skin's own repair mechanisms.They help maintain acid-base balance and water distribution within skin cells, which is essential for a healthy barrier. This supports both hydration and the skin's ability to protect itself against environmental stress.

Keratin amino acids are typically found in conditioning and hydrating formulations including serums, moisturisers and hair treatments. They work well alongside other hydrating or repairing ingredients and can be used daily as part of a standard skincare routine. No specific application technique is required beyond standard product use.

Keratin amino acids are generally well-tolerated and suitable for most skin types. Those with known sensitivities to protein-based ingredients should patch-test first.