For the last few years I've developed spots on my upper body during the colder months (only). Similar to acne, but weeping more and often tending to take up to a week to dry up. Prescribed treatments for both acne and folliculitis didn't make any difference, neither did Vitamin D supplements in case a deficiency in the winter was a cause. Purely as a shot in the dark, I changed over from shower gels to traditional bar soap this autumn. Much to my surprise, no spots at all this year. I can only guess that I have some kind of sensitivity to one of the ingredients in shower gels such as SLS, but it still doesn't entirely make sense. Can anybody add anything?