5.Niacinamide

Niacinamide is vitamin B3, also known as nicotinamide, and can be used as an acne treatment.
it can be found in topical treatments that are applied directly to the skin. Oral Niacinamide supplements may also prove helpful in the treatment of acne.

Niacinamide helps build cells in the skin while also protecting them from environmental stresses, such as sunlight, pollution, toxins and treats acne. it may be helpful for severe acne, especially inflammatory forms like papules and pustules.it is an anti-inflammatory that works to reduce the swelling and redness associated with acne. It also works to regulate the amount of acne-causing oil being produced by the glands in your skin. In addition, it regulates skin tone and can help to fade the red, purple and brown marks that acne can leave on the skin.

Where can buy – You can find 2 to 4 percent gels over the counter. Your dermatologist can prescribe stronger formulations.