I am 33, oily skin, there nosogubki ((((((((I use this serum, though in it and contains vitamin C, smear on top of additional vitamins, the skin is very well accepted, in the morning rested refreshed, use only week 2, nosogubki not gone, but hopefully with the addition of collagen into the situation changes, the elasticity and smoothness of the skin as a whole is 100% -syvorotka works as expected !!!!!!!!!