If you have ever been to a dermatologist for acne, you may have received cryotherapy. Cryotherapy is the use of extreme cold to treat patients. Dermatologists often use liquid nitrogen and a cotton swab to treat acne. The doctor dips the cotton swab into a bath of gliquid nitrogen, freezing the tip of the swab, then they dab the swab on each of the zits. The extreme cold has two major benefits for acne suffers. First the extreme cold kills any bacteria that might be in the zit. Killing the bacteria keeps the area from becoming infected or inflamed. The second benefit is that the extreme cold makes the skin contract and closes the pores, virtually eliminating the pimple. The treatment does sting for a second, but when you leave the office with a clear face the small amount of pain is totally worth it. The major problem with this method is that it costs hundreds of dollars to see a dermatologist .Provided at SKIN AND BROWS with all facials .