My hood has seen better days.... But wooed by the excellent promo video for Renovo I bought the 3 items in the renewal kit. I scrubbed and scrubbed but couldn't get out the really persistent marks on the fabric hood. The previous owner left the car under trees and maybe this is the main problem. I suggest use caution before rushing ahead to get the renewal kit if your hood is heavily marked. The black stain worked very well where there were no residual marks. I've just waterproofed as the final stage and have my fingers crossed it will now keep the inside dry. Does anybody know if Autoglym is better at removing deep ingrained stains than Renovo???