Try changing your soap or body wash Moy. Try using a hypoallergenic one. I too have a small number of pimples at the back now (which never happened when in the Philippines). I bought Cetaphil body wash and it kinda stopped getting bad (but pimple scars are just annoying! ). Johnsons body wash is good too. That's what I used in the Philippines and I had no pimples on my back. I have to buy that again in the pound shop when my Cetaphil goes empty coz it's a bit expensive.