Posted by iHerb Customer on Jun 16, 2015 | Verified Purchase
31yrs/F, combination skin I wanted to try something with a reasonable concentration of Vitamin A. The jar is pretty small, but it lasts surprisingly long. However, I do not understand the jar packaging. As far as I know, Vitamin A oxidates very quickly, so shouldn't it come in a tight-neck bottle? Anyway, I like this product very much. I use it during the night, and it makes my skin look good the next morning. There is a tingling feeling, but hey, this is a good thing. At least you know, that the retinol is still effective (again, the jar packaging). Red spots and blemishes are gone pretty quickly. I have read that many of the users apply this during the day as well. Please, don't do that! I'm no expert, but as far as I know, it can cause serious damage to your skin. Also, if possible, use sunscreen the day after even if you applied it during the night.