The Science Behind Youthology Collagen

1 Oral Supplementation of Specific Collagen Peptides Has Beneficial Effects on Human Skin
Physiology: A Double-Blind, Placebo-Controlled Study
Proksch E., Segger D., Degwert J., Schunck M., Zague V., Oesser S. Skin Pharmacol
Physiology, August 2013