Dec 22, - Curious which home remedies for acne actually work? We talked to Learn everything you could ever want to know about adult acne. Natural Home Remedies for Adult Acne. Tea tree oil is an essential oil from the Australian plant Meelaleuca alternifolia. Alpha-hydroxy acids (glycolic acid, lactic acid) in non-alcoholic toner can help minimize and heal breakouts. Stick to a low-glycemic diet. Reducing dairy has been shown to be helpful.