All mammals share similar signalling proteins, including those released by stem cells which are used to communicate with other cells. Red deer cord lining stem cell proteins used in CALECIM thus also have regenerative and restorative effects on human skin. Ultimately, the results from using CALECIM Professional products speak for themselves as well as the in-vitro tests that they undergo. More can be found on our website on the effect of PTT-6 on skin and hair on our website.