Dry rough skin: Retinol or other retinoids

Retinol or other retinoids normalise skin cell turnover, so if you’re shedding too many skin cells and that’s what’s making the skin dull, retinol slows this down. However, normally the problem is skin cell turnover slowing down as we age, and boosting this (retinol can do either, depending on the rate of skin cell turnover relative to the optimum) creates smoother, fresher skin.