This helped alot with treating my acne and hyperpigmentation. When a blemish would be forming it would be very minor and go away sooner compared to not using niacinamide.
It could be a slightly tacky on me until i figured out a way around that.
I would add a few drops, you dont need a lot, into my palm and then gently rub over my slightly damp face and neck. Pat gently and let settle into skin a couple minutes.