Where is niacin working?

Beauty

I heard that niacin is good for your skin

I was wondering what the effect was.


  274 5   7 years ago

pu1. Whitening


2018-08-04

pu2. I think it's whitening


2018-08-04

pu3. Oh, is it really effective for whitening?


2018-08-04

pu4. It's just a bit brighter


2018-08-04

pu5. Whitening is still impossible with modern science


2018-08-04


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