Mediderma Sens-Age MD Ultra Corrector 3A Renewer Facial Cream is a powerful anti-aging cream with excellent tolerance thanks to its slow-release 3-Retinol System. For dry skin. Retinoids stimulate the proliferation of keratinocytes, normalize the exfoliation process, and improve the skin’s texture and tone. Their combination with other active ingredients such as hydrolyzed hyaluronic acid or TGF- 2 growth factor enhance their effects and tolerance. The 3 molecules contained in the 3-retinol system have different action speeds and provide a gradual optimal dose of active ingredient. As a result, it is possible to reach the therapeutic levels of vitamin A during a prolonged time and the side-effects associated to the excess of the active ingredients are minimized.