The Vinyl Spray Coating helped a lot with the discoloration and aged look of my boat seats. Went thru the whole process...SEM soap, SEM Vinyl Prep, and then the Marine Vinyl paint coating...lots of light coats. It worked great on most areas but in some places where the discoloration was the worst and the vinyl was less soft, afterward, when I press on those areas I see fine cracks appear in the coating. The vinyl is still ok and all in all looks much better than before.