Whether it's hormones, aging, or stripping the junk food out of my diet, I recently developed a raging case of adult acne. I hate benzoyl peroxide, which bleaches clothes and pillowcases. I tried a tea tree oil/salicylic acid combo, which made the skin that was clear look great but did bupkis for my zits. A little research pointed me to try sulfur products, so I picked up a bottle of this little gem. It works! Yes, you may have weird little white dots on your face overnight, and the smell is not the best, but who cares when it clears your skin? It's a tiny bottle, but this is one instance where size does not matter. Just a Q-tip full will take care of a multi-sit breakout with ease. I'm definitely buying more once I run out!