Gyeon

Gyeon states the durability of its maintenance spray as “greater than six weeks”. Everyone else in this database says “up to” some larger number. That difference in direction is the most quietly credible thing we found.

Background

A Korean manufacturer that says it produces in its own facility in South Korea and sells through a certified detailer network of more than 1,600 alongside consumer bottles as small as 30 ml. The company’s legal name and founding year are genuinely absent from its own site, so they are absent here too.

Note that the product line has moved on: Duraflex and Pure as previously named are gone, replaced by an EVO generation — Mohs EVO, One EVO, Syncro EVO, Pure EVO. Test reports and reviews of the previous generation do not describe what currently ships.

A floor, not a ceiling

Q²M Cure Redefined publishes “>6 weeks” in a technical specification block, next to consumption in millilitres per car and a pH tolerance range. The same figure appears identically across four regional sites.

“Greater than six weeks” is a claim that can be beaten and is hard to be embarrassed by. “Up to twelve months” is a claim that is technically satisfied by any result at all and unfalsifiable in practice. Gyeon is the only brand here that framed it the first way, and it is the modest end of a range where the same product class gets credited with a year by others.

Cure is also positioned honestly as a topper — developed to support and extend the performance of ceramic coatings, with standalone use as a secondary case — rather than sold as a coating in its own right. Their professional Mohs EVO coating, by contrast, claims up to 36 months for one layer and 48 for two, quoted alongside distance figures.

No hardness claim at all

Worth pausing on. Their flagship professional coating is named after the Mohs hardness scale and its product page carries no hardness figure anywhere — no 9H, no pencil test, nothing. Three brands in this database claim hardness beyond the top of the pencil scale. The one named after a hardness scale declines to give a number.

The site also contains an admission you rarely see from a coating maker: for the first couple of weeks after application, ceramic coatings show some tendency to develop hard water stain deposits.