Peptides Extreme Fermeté is a first of its kind lightweight collagen-boosting peptide serum designed to visibly reduce signs of aging, improve skin firmness and elasticity. Powered by BioComplexePX with PX27, a peptide-rich complex derived from natural silk that activates the production of type 1 collagen, a key protein produced in skin cells for healthy and strong skin. Clinically proven to soothe, smooth, plump and deeply hydrate the skin, it helps reduce the signs of aging and sensitivity, such as fine lines and wrinkles. Formulated with ingredients that are generally well tolerated for daytime use, Peptides Extreme Fermeté can be used morning or evening as a gentle, peptide-rich alternative to retinol. In a clinical study, participants reported no increased sensitivity to the sun while using this product. Fragrance-free and suitable for all skin types, including sensitive, eczema-prone, stressed or easily irritated skin. Awarded the Seal of Acceptance™ by National Eczema Association.