출처 : What Exactly is Collagen and Elastin? - Skin Perfect SpasSkin Perfect Spas What Exactly is Collagen and Elastin? - Skin Perfect Spas Collagen and elastin are protein-based fibers that are found within the skin. These fibers are primarily responsible for that youthful skin that we all long to have. Collagen is accountable for skin’s firmness and youthful texture; while elastin is respo skinp..
