It contains 5% AHA at a pH of 3. This sentence is very important, because AHA just work at this degree and then exfoliate well.
Salicylic Acid can permeate deeply into the skin to control the redundant sebum secretion, so it can prevent but can not heal.
very soft, but seem to "can not remove the light makeup", so you can use it in the morning or after remove oil in the night
it contains slight Salicylic Acid, so very good for oil skin.i like this. but it is a little irritative, so it is not good for sensitive skin.
use after toner, it can work as a very good moisture-keeper, and VC can resistant oxidation .
both UVB and UVA, that is very good.
make the skin soft and slightly moisturizing.
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