A potent derivative of vitamin A, this is a cell-communicating ingredient (and antioxidant) which instructs damaged skin cells to make healthier cells and counteract the activity of enzymesMost enzymes used in skin care are derived from fruits and vegetables, like papaya, pineapple and pumpkin. They are commonly use... that degrade collagenApplied topically, collagen is extremely hydrating. It works with elastin and assists in renewing skin cells to give skin a smoo... and elastin.