This stuff works wonders. However, one must be careful when using it along the outside of a boat, especially on any color, because fading WILL occur. If it doesn't come off with just a light rub, stop and make sure its not causing a fade mark. Don't press too hard, take your time and use a light rubbing action. If you do experience some fading a quick rub-on rub-off wax will help, but it may require some buffing and the end.

One of the very best clean up chemicals for boat work is pure clean petrol on a clean cloth. Gets rid of scuffs, sticky tape residue, silicone messes and all sorts of nasty stuff

Magic eraser is a micro abrasive, good for molded plastics, beware on fiberglass gelcoats it will remove the gloss with over use

Would this be safe to use on a polyethelyne kayak?