X-liso: Do-it-yourself hair straightening system. Two treatments in a single kit: Straightening and Repair. X-liso uses the unique Keratin Omax technology to optimally align the hair's strands, providing an incredibly natural looking straightening. The Protective Mask and its Total Repair System help improve the hair's health by replacing vital nutrients, leaving the newly straight hair radiant and soft to the touch. The oil extracts from Brazilian nuts are a key active ingredient in X-Liso. Native to the Amazon region, the nuts are rich in omega 3 and 6, linoleic acid, and vitamin F. Their oil forms a protective film against external aggressions and promotes natural hydration. Best of all is that X-Liso uses nature based formulations, leaving your hair smoother and straighter than ever without putting its health at risk. This means no formaldehyde or any other chemical that could be considered harmful to your hair's health.