Scientific evidence from new clinical studies has led to great advances in the knowledge of how the appearance of the skin can be maintained in an optimal way through conscious diet and nutrition.
The studies recently published in the renowned scientific journal Skin Pharmacology and Physiology show that intake of specific collagen peptides has a significant positive effect on both skin elasticity *, wrinkle volume ** and procollagen concentration **.
The collagen peptides used in the studies are produced via a very special biotechnological process where long-chain natural collagen is enzymatically cleaved down to predetermined short collagen peptides with a specific amino acid sequence, and are therefore completely different from unrefined collagen products.
The studies were conducted with the highest possible quality as randomized, double-blind, placebo-controlled (RDBPC) human observational studies and were conducted within the strictest requirements according to Good Clinical Practice (GCP).
These new studies, as well as previous studies, have shown that collagen peptides only reach the skin cells in the deeper layers of the skin optimally if the collagen peptides are produced in a very special way to ensure effective effect. Such collagen peptides are produced by a biotechnological process in which long chain natural collagen is cleaved into predetermined short peptide chains with specific amino acid sequence.
* Daily intake of specific collagen peptides in a double-blind, randomized and placebo-controlled observational study of 69 people shows a significant increase in skin elasticity after 4 weeks, in some cases up to 30%.
** Daily intake of specific collagen peptides in a double-blind, randomized and placebo-controlled observational study of 114 people shows significant reduction in wrinkle volume at the eye after 8 weeks, in some cases up to 50%. The same clinical study also shows a significant increase in procollagen content in the skin of 65% after 8 weeks. 
These significant results from the above double-blind, randomized, and placebo-controlled observational studies are further supported by a number of previous in vitro and in-vivo preclinical and clinical studies.
Studies show that collagen peptides can affect the proliferation of the skin’s own collagen-producing cells, the fibroblasts ,,, and stimulate increased collagen formation ,,,,, and other connective tissue components. Furthermore, scientific studies show that intake of collagen peptides has a significant effect on the outer and underlying layers of the skin in the form of increased moisture balance ,,, reduction of wrinkles ,,, and increased elasticity ,,.
All the mentioned clinical studies can be found here, together with further research.
 Proksch E, et al. Oral supplementation of specific collagen peptides has beneficial effects on human skin physiology: A double-blind, placebo-controlled study. Skin Pharmacol Physiol 2014; 27:47-55.
 Proksch E, et al. Oral intake of specific bioactive collagen peptides reduces skin wrinkles and increases dermal matrix synthesis. Skin Pharmacol Physiol 2014; 27:113–119.
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