Why do you always use vitamin C products like concentrated ampoule at night?

Cosmetics

Isn't it effective to use it during the day?


  111 3   4 years ago

pu1. It's probably because it's stimulated by UV rays


2020-10-02

pu2. It's because vitamin C doesn't work when it's in the sun


2020-10-02

pu3. Vitamin C is easily oxidized, but toxins come out when oxidized


2020-10-02


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