What's the best way to remove Keratosis pilaris (pic related) ?

Same, but I still tan.

I suppose I'm lucky though because unlike so many very pale British people, I look younger, not older, when I tan.

Literally go a Mediterranean olive colour, to the point one of those African sunglasses sellers/drug dealers ("looky looky" men) in Ibiza insisted I was Spanish for about an hour while we were waiting for a discobus.

I've had this on my arms for as long as I can remember. I started isotretinoin (Accutane) and it is almost completely gone, and I'm not even half way through my treatment. I had no idea that isotretinoin would do anything for it, but seeing it go away during my first month was a really nice surprise.