I am a 53 year old male who had moderate acne during my teens. No scarring. I have clear skin now everywhere but on my buttocks and thighs. I have had this condition as long as I can remember. I shower at least once a day, the area stays dry and I do not use any types of lotions or oils on my skin, but the blemishes never get better. Underwear as well as bed sheets are cotton and I do not use soaps or laundry soaps with scent. Any suggestions on how to lessen or get rid of this problem? Thanks