sorry dude but a respray is the only way of fixing or improving it unless you find some second hand wings in your colour. my first mk3 golf had this on the top of both front wings and nothing would improve them. basically the laquer has been damaged by uv and contaminents have got in and opened the laquer up which is the crazing your seeing.
sorry for the bad news dude.
get a pic up if possible, what car have you got?