· "Retinol cannot be mixed with AHA and BHA exfoliating agents".
False. Many studies defend the use of these two ingredients together because of their great efficacy.
· "You can't use Retinol during the day".
False. You can use it during the day, but always with sun protection if you are going to be exposed to the sun, since Retinol produces a sensitizing effect under it.
· "You can't mix Retinol and Vitamin C".
False. Yes, together they make a perfect team: Vitamin C renews the natural colour and removes spots, and Retinol regenerates and restores.