Niacinamide, a form of vitamin B3, has been studied for several skin issues, including acne. However, the results of this have been unclear. Pantothenic acid (vitamin B5) has also been studied for ...

Pantothenic acid, as Dr. Garshick says, has been known to help prevent acne, so when less of it is present in the body, theoretically, it can lead to breakouts. Additionally, although it isn't ...