Skin in arms with dark spots/pimples from keratosis pilaris, please help?

I have the same problem. I found that Tree Hut's Shea Body er with Brazilian Nut is the only thing that works for smoothing and lessening those bumps. Use it right after you take a shower and your skin will be soft for the whole day or more. It doesn't dry out in a few hours like other lotions. You can find it at Wal-Mart by the facial cleansers and bath stuff. I don't know if it will help with the scarring that you already have, but it may help prevent future damage.