Rene Furter Absolute Keratin Repair mask contains plant-based keratin that helps rebuild the hair fiber, camelina extract, and biocymentine restore the hair's natural barrier in order to help it retain moisture. In essence, this is a double-purpose mask that not only repairs damage and restores resilience to the hair, but also improves its cosmetic appearance in order to reveal shiny and silky soft strands. The highly concentrated formula performs best when used as an intensive therapy for 4-6 weeks, 2-3 times a year. From the very first application, this lush mask leaves fine hair feeling significantly lighter and shinier, as confirmed, respectively, by 93% and 90% of women who tried this product instead of their usual favorite.