Chitosan Glycolate

Chitosan glycolate is a derivative of chitosan, a naturally occurring polysaccharide extracted from the shells of crustaceans such as shrimp and crabs. In skincare, it functions as a film-forming agent, meaning it creates a protective layer on the skin's surface when applied topically.The ingredient serves multiple functions within a formulation: it conditions the skin, provides antioxidant properties, and helps to maintain moisture retention. Its film-forming capacity allows it to sit on the skin rather than penetrate deeply, making it useful for surface-level hydration and barrier support.

Chitosan glycolate works primarily through physical rather than chemical mechanisms. When applied to the skin, it forms a thin, breathable film that sits on the surface. This film helps to trap moisture within the skin whilst still allowing the skin to breathe, thereby improving hydration and the skin's appearance.The film-forming action also provides a protective barrier against environmental stressors. Additionally, the ingredient's polysaccharide structure may offer mild antioxidant benefits, though the extent of this activity in topical skincare formulations requires further investigation.

Chitosan glycolate is typically found in moisturisers, serums, and barrier-repair products. As a film-former, it works best when applied to clean, slightly damp skin, allowing the moisture to be trapped beneath the protective layer. It pairs well with hydrating ingredients such as glycerin or hyaluronic acid, and can be used daily as part of a morning or evening routine. No special preparation or timing is required.

Chitosan glycolate is generally well-tolerated in skincare formulations. Those with shellfish allergies should exercise caution, as chitosan is derived from crustacean shells, though allergic reactions from topical use are uncommon.