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Arginine is an amino acid widely used in cosmetics and skincare for its multifaceted benefits. As a key protein building block, it plays a crucial role in maintaining skin health by supporting collagen synthesis, which promotes firmness and elasticity. Arginine also enhances skin hydration and strengthens the barrier function.

When applied to the skin, histidine acts as a powerful scavenger of hydroxyl radicals—highly reactive molecules that contribute to oxidative stress on the skin’s surface. It supports skin hydration by boosting natural moisturizing factors and enhancing the skin’s ability to resist environmental stressors. In hair care, histidine functions as an effective chelating agent, binding to and helping remove mineral deposits and impurities from hard water, product buildup, and chlorine. This helps prevent dryness, brittleness, and breakage caused by excess minerals. By reducing copper accumulation in the hair, histidine also helps protect against UV damage and maintains hair strength and integrity.

Proline is an amino acid involved in the body’s natural protein synthesis. In skincare, it aids in moisture retention, contributing to a smooth, supple complexion. Proline also supports the skin’s structural integrity, helping to minimize the appearance of fine lines and wrinkles.

Serine is a non-essential amino acid involved in the body’s natural protein synthesis. In skincare, serine plays a key role in moisture retention, helping to improve the skin’s hydration, texture, and overall appearance. It also contributes to maintaining the structural integrity of the skin, promoting a more youthful look. Naturally occurring in the body, serine is considered safe for cosmetic use and is typically formulated alongside ingredients like phospholipids, electrolyte minerals, and components of the skin’s natural moisturizing factor (NMF) to enhance its effectiveness.

Allosteris is an engineered complex developed to boost the effects of retinol and peptides, fight against aging and hydrate the skin.

L-rhamnose is a key skincare ingredient known for boosting hydration, enhancing skin texture, and diminishing visible signs of aging. Its powerful benefits work together to visibly reduce discoloration, crepiness, fine lines, and wrinkles, revealing smoother, more youthful-looking skin.