Collagen is a naturally occurring protein in skin that helps provide firmness and structure. In skin care products, a hydrolyzed form of Collagen is often used to optimize absorption while helping to improve the look of fine lines, wrinkles, plumpness and firmness.

Peter Thomas Roth products with Hydrolyzed Collagen:
Potent-C Brightening Vitamin C Moisturizer
24K Gold Pure Luxury Lift & Firm Hydra-Gel Eye Patches
Cucumber De-Tox® Hydra-Gel Eye Patches
Water Drench® Hyaluronic Cloud Hydra-Gel Eye Patches
FIRMx Collagen Hydra-Gel Face & Eye Patches
Ultimate Solution 5 Multitasking Moisturizer