Select One Definitive Straightening is an innovative one-step product without formaldehyde that guarantees smooth and silky hair for much longer. Enriched with the incredible and exclusive Lumini system - an intelligent system that favors the restructuring of the hair fiber - Select One eliminates excessive hair Volume in the treatment and reconstruction of hair damaged by the passage of time, making it much more hydrated, soft and shiny. With Select One Definitive Straightening it is always possible to achieve the best results. Choose One Ultimate Straightening counts with the exclusive Lumini system, which together with lactic acid, coconut oil and hydrolyzed collagen acts directly on the hair fiber to realign, rebuild and repair damage.