How Does the Body Use Collagen To Help Skin?

How Does the Body Use Collagen To Help Skin?


Two Islands Marine Collagen Beauty Capsules contain hydrolysed marine collagen peptides which is derived from fish skin. Because of their small particle size, hydrolysed collagen can reach the small intestine in the form of collagen peptides. Here they are broken down into smaller particles (dipeptides and tripeptides) and free amino acids where they can then be absorbed and distributed throughout the body via the bloodstream1.

Previous research has shown that collagen derived peptides are resistant to gastrointestinal digestion and enzymes, which means they can be absorbed into the bloodstream2,3.

Once absorbed through the small intestine, collagen peptides and free amino acids travel through the bloodstream to various parts of the body, including the dermis (the deepest layer of the skin) where research in animal models have shown they can remain for up to 14 days4.  Several studies have shown that collagen peptides can be efficiently absorbed and distributed to the skin, where they can stimulate fibroblasts (specialised cells in connective tissue) to increase the density and diameter of collagen fibres, as well as increase hyaluronic acid production and protect against UVA radiation1. Supplementing with marine collagen has been shown to increase collagen production, skin hydration and moisture, improve skin elasticity and reduce the signs of aging5,6.



  1. Sibilla, S., Godfrey, M., Brewer, S., Budh-Raja, A., & Genovese, L. (2015). An overview of the beneficial effects of hydrolysed collagen as a nutraceutical on skin properties: Scientific background and clinical studies. The Open Nutraceuticals Journal, 8(1). 
  1. Hong, H., Fan, H., Chalamaiah, M., & Wu, J. (2019). Preparation of low-molecular-weight, collagen hydrolysates (peptides): Current progress, challenges, and future perspectives. Food chemistry, 125222.
  1. Alemán, A., & Martínez-Alvarez, O. (2013). Marine collagen as a source of bioactive molecules: A review. The Natural Products Journal, 3(2), 105-114.
  2. Watanabe-Kamiyama, M., Shimizu, M., Kamiyama, S., Taguchi, Y., Sone, H., Morimatsu, F., ... & Komai, M. (2010). Absorption and effectiveness of orally administered low molecular weight collagen hydrolysate in rats. Journal of agricultural and food chemistry, 58(2), 835-841.
  1. Asserin, J., Lati, E., Shioya, T., & Prawitt, J. (2015). The effect of oral collagen peptide supplementation on skin moisture and the dermal collagen network: evidence from an ex vivo model and randomized, placebo‐controlled clinical trials. Journal of cosmetic dermatology14(4), 291-301.
  1. Koizumi, S., Inoue, N., Shimizu, M., Kwon, C. J., Kim, H. Y., & Park, K. S. (2018). Effects of dietary supplementation with fish scales-derived collagen peptides on skin parameters and condition: A randomized, placebo-controlled, double-blind study. International Journal of Peptide Research and Therapeutics, 24(3), 397-402.