38 Views
Alca
Oily/Resilient
Vitamin C absorbs best at lower pH, so it's better to apply it after an exfoliator, not as a first step. Or as a serum step if you don't use an exfoliator in the same routine.
Apart from Vitamin C (pH ~3.5) and exfoliating acids (AHA, BHA; pH 3-4), most of the other actives have pH similar to our skin (~5.5), so you don't have to worry about them much.
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MelissaKarey
Dry/Resilient
Ive been applying as a first step cause I saw that it should be first step but I will just use it as a serum step from now on
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