We have had our fiberglass shower unit for 22 years and have tried to keep it clean. Recently I have noticed that it is impossible to get it to look clean. I'm wondering if the finish is wearing off or is that possible. The more I clean the bigger difference in color I notice. Places in the cornors where soap runs down seems whiter where the rest of the shower is more of a tan color. Is it possible that the tan portions are actually stain or dirt and is there anything to remove the stain. Is there anything available to make the whole shower white or recolor the entire shower surface
Thanks for any help you can give me.