Answer:
Well, the bad news is you can never get rid of Keratosis Pilaris. I also have it, and i treat it using a dandruff shampoo. Dandruff Shampoo's are used for helping dead skin (Dandruff) flake off faster. Keratosis Pilaris is a condition where your skin clogs up your pores and doesn't shed like it should. So by using dandruff on your arms, or wherever your Keratosis Pilaris is, it should help the skin shed like it should! While you are using dandruff shampoo for your KP, make sure you moisturize wherever you are using the dandruff shampoo, or your skin will dry out and it will show! Try to use lotion 2-3 times a day.
*BEWARE: If you stop treating keratosis pilaris, it WILL come back! :(