I don't get it why products like Opti Seal, UPGP, Black Fire Crystal Seal and Zaino CS are not more popular amongst detailers. They are easy to use and we can argue that they cause less damage to the paint considering you remove once step out of the process (Buffing). They look good and some like Opti Seal are from pioneers like Dr. G who helped invent the clear coat. They may not last as long as traditional sealant but it is so easy to top up every month or two. Isn't it better to top up every two months instead of hoping that your traditional sealant lasts 6 months.