Garlic has antibacterialTrusted Source, antifungal, antiviral, and antiseptic properties from allicin. Allicin helps to kill the bacteria causing acne. It also helps to reduce swelling and inflammation, and improve blood circulation. These beneficial effects allow the skin to receive more nutrients. Garlic also has thiosulfinates, which can act as an antimicrobial. Many believe that with regular use, it clears the skin.

Garlic also contains other vitamins and minerals that are believed to combat acne, like vitamin C, vitamin B-6, selenium, copper, and zinc (used to control oily substances). Garlic has also been shownTrusted Source to have potential effects on several medical conditions like cancer, psoriasis, and wound healing. Some studies have shown that garlic has anti-inflammatory properties. These properties are believed to help reduce the inflammation of acne.