How to Lift and Firm Your Skin – What is Collagen? (2010-1-10)
Author: Heather Price Source: ezinearticles.com Collagen is a protein of connective tissue in animals. It is the most common protein in mammals, and makes up about a quarter of human protein content. Gelatin is derived from collagen. Collagen can be looked at as body glue – without it we’d literally fall apart. As the skin [...]