DORÉ Peptides Extreme Fermeté serum firms skin and boosts collagen. Created to address visible signs of aging, this silky formula layers easily into any daily routine. It features BioComplexePX with PX27, a peptide-rich complex derived from natural silk, which supports skin’s natural collagen for a plumper, more elastic appearance. The serum leaves skin feeling soft, comfortable, and visibly smooth, while remaining suitable for sensitive skin and is fragrance free.