Just put a couple droplets in the hand and then use your finger to apply it to any pimples. The tea tree oil dries it up and helps heal scarring.
It doesn't dry out my skin, like many other acne medications do. It works quickly, lightening the pimple almost immediately and shrinking it within 24 hours. I am not a fan of the smell, but it's tolerable. It's a pain in the butt to get out of the bottle and once you get a droplet out, several come falling.