Best possible swirl mark and chemical resistance from a prosumer grade product. Provides paint protection with previously un-achievable levels of gloss, durability, scratch and chemical resistance. Compared to standard ceramic coatings, Crystal Serum forms a relatively thick combined film which greatly reduces surface hazing and improves gloss. Considered the thickest, most durable true ceramic coating in the industry. A coating so hard that if applied incorrectly can only be removed by using 1,500 grit sand paper. When applied correctly it can last for up to 5 years. Crystal Serum Light is the prosumer version of the world famous Gtechniq Accredited Detailer only Crystal Serum, a coating so hard that if applied incorrectly can only be removed by using 1,500 grit sand paper. Flawless possible swirl mark and chemical resistance. Considered the thickest, most durable true ceramic coating in the industry. WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.