I too have pretty much given up on tire shine as I've had little luck. I tried many over the years but they all seemed to collect dirt promote tire bloom even if buffed off really well. Years ago, I tried Forever Black Tire Gel and it was OK. Now I just scrub them liberally with a soft bristle brush and a few drops of Dawn detergent at each car washing. They stay a nice flat black. That said, the last time I washed - about a week ago, I put about 3 coats of Klasse Sealant Glaze on them and hand polished as I was getting ready to toss a microfiber application pad. A week in and they look good. I'm not going to keep applying as I'm not sure they wouldn't start to develop a white haze as the product builds up. I have found that if I take the time to wash them at each car washing, they stay pretty clean and black.