49 Dilihat
AfrynKhyra
Kering/Tidak Sensitif
1. Do the patch test - on the jawline or ear)
2. start using once a week first
3. then slowly upgrade to twice a week
4. well i don't usually use niacinamide serum everyday, so if you have sensitive skin it's better to use other hydrating or calming serum together
5. stop if you see any sign of irritation.
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157min
Kering/Tidak Sensitif
You can use combine niacinamide with other active ingredients too, but make sure your routine doesn't include more than 3 actives at one time.
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