The oil of the Australian tea tree contains terpinen-4-ol, an antibacterial agent that kills zit-causing bacteria. It also acts as a solvent, so it can stop oily matter from clogging up sebaceous glands and forming pimples. A recent study compared 5 percent tea-tree-oil gel to 5 percent benzoyl peroxide (a common blemish fighter) in a treatment of mild to moderate acne. "It was found that both worked equally well to get rid of whiteheads and blackheads," says Jules S. Abadi, a New York City dermatologist. Plus, tea-tree oil has none of the side effects -- such as dryness -- of chemical acne antidotes. It should be noted that the tea-tree oil did take a bit longer to work than the benzoyl peroxide. "Tea-tree oil is good for all skin types -- oily, normal, and dry," says Charles Friedman, scientific director of Burt's Bees Skincare. Our favorite zit-zapper spiked with tea-tree oil: Burt's Bees Herbal Blemish Stick, $8.
Thanks Lisa! I've been using tea tree oil since I was a teen (some moons ago) and it has always worked wonders as a spot treatment and has great antiseptic qualities.