text: As with any make-up, it can reduce the appearance of fine lines and wrinkles, but it can't fix ugly. I used it on a 3 year old bay boat. It is not snake oil, nor is it magic. If you look at the covered cracks you can still see them. Worth buying if you are trying to hide hairline gelcoat cracks quickly and easily. If you want perfection break out the Dremel and gelcoat, and set aside a few afternoons or break out the checkbook.