195 Views
jinnaee
Dry/Resilient
By theory I don’t think there’s any harm in doing that, but you may have skip areas where the application of the niacinamide serum isn’t evenly distributed and I think it may have a tiny effect on the penetration of the product.
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helvantine
Oily/Resilient
if your skin don't have any bad reaction after doing that, i think it's alright.. it save time too by mixed together.. to niacinamide really tacky for me too
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