Crystal Serum Ultra represents a major leap forward in the performance of ultra-durable paint protection, offering matchless levels of gloss, surface slickness, swirl and chemical resistance. Extensive real-world and laboratory tests, prove that its thicker, glossier and harder structure offer unsurpassed abrasion and chemical protection. Crystal Serum Ultra replaces Crystal Serum as a Gtechniq Accredited Detailer only, signature coating, with a nine-year guarantee. Should Crystal Serum Ultra be applied incorrectly a car would need flat sanding to remove the coating.