Think your collagen serum is doing enough? Think a little deeper! Total Collagen Rejuvenating Serum stimulates the proliferation of not only Derma Collagen Type I, but the entire spectrum of Collagen, including types IV, VII and XVI. Collagen is an essential amino acid, building and repairing damaged tissue in the skin. Carefully chosen Peptides increase production of Collagen lll (the “youth-boosting” Collagen type). Our Collagen formula is suspended in a silky Xanthan Gum base, for rapid absorption and nutrient delivery. Best for mature skin types, or for anyone focusing on anti-aging.