is it accutane? I was on that mess for awhile... destroyed my chops - i was always cracking/chapping/bleeding. i eventually resorted to two things... drinking about 20 oz of water per hour i was awake and using vitamin A&D diaper rash cream on my chops... haha sounds weird, but those two things combine with carmex are a real life saver. Also at night, put regular plain petroleum jelly on there... it always moisturizes my chops better than anything. good luck!