BeautyDeiavy review for 10% Niacinamide Barrier Serum

my hollygrail me, why? because this can prevent my acne, even during menstruation my acne never appears, you can also do spot treatment, just put it on the pimple, the next day the skin won't hurt and acne won't appear, another effect, this can brighten facial skin , moisturizes, and quickly removes acne scars, but unfortunately, this wears off very quickly..