Take a Zinc Supplement
Zinc is an essential nutrient that’s important for cell growth, hormone production, metabolism, and immune function.
Research shows that people with acne tend to have lower levels of zinc in their blood than those with clear skin. Taking zinc orally helps reduce acne. Zinc is available in many forms and each one contains a different amount of elemental zinc.
The recommended safe upper limit of zinc is 40 mg per day, so it is probably best to not exceed that amount unless under the supervision of a medical doctor. Taking too much zinc may cause adverse effects, including stomach pain and gut irritation.