Mix one part water with two parts of tea tree oil or astringent. From here, using a dropper, fill your bottle 1/3 of the way full with calamine lotion. Then fill the rest of the bottle with your water/tea tree oil mixture. Let the calamine lotion settle at the bottom of the bottle so it separates from the oil mixture, then use a cotton swab to dip into the bottle, absorbing both the liquid and the calamine lotion.

Let sit on your blemish overnight and wash off in the morning. Protect your skin with moisturizer.