It's true, and it has many functions. Function of firming skin and smoothing wrinkles: After entering dermal tissue, Hysni collagen can quickly fill local collapse, make cells full, improve loose skin, tighten skin, reduce deep wrinkles and smooth fine lines. Shrink pores and make skin firm and elastic. Keep the skin delicate and smooth, wrinkles stretch, showing texture and transparency. Used for injection wrinkle removal and moisturizing: Collagen contains hydroxyproline and serine, which is a natural moisturizing factor, preventing water loss and maintaining skin elasticity and vitality. Collagen itself is a transparent substance composed of three spiral peptide chains. These three spiral structures can firmly lock moisture and nutrition, and keep skin moist and tender at all times.