Myth of the skin - Skin creams with collagen can replace collagen - collagen is a large molecule and isn't going to pass through your skin and somehow incorporate itself exactly where it was lost. Your body has to synthesize new collagen on its own from basic proteins. Certain vitamins, such as A and C, can help this along.
For an excellent topical source of Vitamin C, our Bare Skin Natural Young C Serum is the best.
Dr. Bollmann Video