A shampoo to gently wash and tame the thickest and frizziest hair| Even unruly, thick, coarse, and frizzy hair needs thorough washing. The shampoo Schwarzkopf Professional BC Bonacure Frizz Away Shampoo removes impurities deeply yet gently, also helping to smooth and instantly improve hair manageability. Its gentleness is due to its sulfate-free technology, making it less foamy but cleaning just as well as other shampoos.