I have used niacinamide serum (Minimalist 5% Niacinamide Face Serum With Bifida Ferment & Oat Extract For Healing & Soothing Skin) today for the very first time.i have oily face with acne scars and pigmentation.After applying i got light tingling feeling and little burning and it happened full day.little irritated.why this happened.my moisturiser also contain niacinamide but I didn't felt like this ever.Also i applied sunscreen which contain
vitamin c.what can be the reason.please help.