BE SL!CK smoothing mask is a softening treatment designed to achieve perfectly straight hair or to tame unwanted waves. With Pro-lisse film, an innovative natural complex based on flaxseed extract, it creates an invisible coating on the hair fiber that reduces frizz, protects from the heat of hairdryers and straighteners, and makes hair smoother and shinier, without weighing it down. With Abyssinian oil and panthenol, it preserves the hair's shine.