UNBEATABLE HARDNESS - Crystal Serum Light (CSL) represents the pinnacle of paint protection technology. CSL forms a chemically bonded, ultra-durable ceramic layer with a 9H hardness rating. EXTREMELY DURABLE - If applied incorrectly, CSL can only be removed by machine polishing with 1,500-grit sandpaper, providing long-term protection against swirls, dirt, road fallout buildup. HIGH GLOSS - Provides lasting gloss enhancement and slick-to-the-touch feel and ultimate paint protection. NO-SOAK APPLICATORS - The soft microfiber applicators have a protective barrier that prevents coatings from soaking into the sponge, preventing product loss and saving time and money. EDGELESS BUFFING TOWELS - These pearl weave microfiber towels are soft and durable for leveling coatings. They are tagless and edgeless so they wont leave scratches, swirls, or high-spots. Crystal Serum Light (CSL) is an outstanding DIY ceramic coating that delivers exceptional gloss and long-term gloss retention, thanks to its superior resistance to wash-induced swirls. However, while CSL excels in durability and protection, its water-repelling properties aren't as strong as those of EXO. That’s why this kit combines the best of both worlds. By pairing CSL with EXO, you get a complete ceramic solution that offers remarkable swirl resistance, incredible gloss, and industry-leading hydrophobic performance. If you're looking for the ultimate protection and finish for your vehicle—this is the kit for you. Our NO SOAK Coating Applicators have a special barrier that helps prevent coatings from soaking past the microfiber cover and into the sponge. Preventing coatings from getting lost in the sponge ensures your coatings last longer and you get to cover more surface area before putting more on the applicator. The Edgeless Pearl Weave microfiber towels are the workhorses of the TRC lineup. The pearl weave is great for leveling coatings and buffing excess. In addition, the plush 70/30 blend and edgeless design help prevent scratching and micro-marring on delicate surfaces such as chrome, paint, glass, or mirrors.