Hydrolyzed collagen Colpropur D® is the perfect solution for those looking to improve their skin appearance and strengthen their hair. This supplement, developed by Protella®, uses bovine-derived collagen types one and three, known for their beneficial properties for skin and musculature. It is designed to restore skin firmness and elasticity, combat signs of fatigue such as wrinkles, and revitalize hair, making it stronger and healthier.