The very top of my steering wheel is rough, where sun has damaged the plastic and eaten through to the cushion layer below. The common chemicals for automotive "uv protection" all warn against use on steering wheels as it may make them slippery, plus I don't really trust the claims of those vendors.
Short of a clunky steering wheel cover, how can I keep this damage from spreading?
Vehicle: 2007 VW Rabbit. It has a hard plastic steering wheel with a cushion feel, of similar look and feel to that of the dashboard. I don't know what plastic type it is.