Mix of 1 part apple cider vinegar, 3 parts water and let it sit. Then with a cotton swab I rubbed the mixture across my face, let sit for fifteen minutes and rinsed with cold water. I then took a Q-tip and placed the mixture on the large pimple on my forehead and let stay for the night. Do you want to know what my forehead looked like in the morning? It was PERFECTLY clear. If only my thirteen-year-old self had learned of this remedy I might actually be able to look at my junior-high photos.