Apply the balm directly to the nipples and within 1-2 minutes you will feel a cool, exhilarating sensation that may last anywhere from 20 minutes to over an hour! For an even stronger sensation, lick or wet the nipples after you apply Nip Zip, then blow on them. It makes nipples more perky and sensitive.- Feels cold after application- Additional moisture and exposure to air intensifies the sensation- Makes nipples more sensitive and perky- All-natural- For men and Women- Safe to use orally