Collagen Pro-X Skin, Hair & Nails TabletCollagen Pro x Skin, Hair & Nails Tablet as the most abundant complex structure protein in the human body, Collagen is found in your muscles, bones, skin, hair, tendons, and cartilages. As we age our body slows down production of collagen and this will have visible consequences, so Collagen Pro X has been developed for you by enzymatic hydrolyzing of collagen to give Collagen Hydrolysate to obtain maximum bioavailability and maximum utilization.