> Home Spain> Brands & Solutions> Cosmetic & Personal Care> Hair> Professional> Treatment. BC schwarzkopf professional bc bonacure is the first hair care program that provides personalized care to the hair from within, offering as a deep and lasting beauty. BC is the hallmark of treatment with more history of the entire portfolio of Schwarzkopf Professional. The LAST restarts took place in 1998 and 2002. With the last relaunch in May 2005, the concept of hair treatment was successfully launched. .