Neem

Azadirachta indica, commonly known as neem, nimtree or Indian lilac, is a tree in the mahogany family Meliaceae. Neem oil has been used for acne because of the aspirin-like compound that helps rid the skin of bacteria. It also helps reduce redness and inflammation. The high fatty-acid content in neem oil is said to prevent and treat scars from acne and is non-comedogenic.