Schwarzkopf BC Bonacure – Curl Bounce. Schwarzkopf BC Bonacure Curl Bounce Therapy provides high energy curls thanks to the Curl-Memory-Complex. This regime ensures well defined curls, renourishment of moisture levels and a non-crispy finish with lavish hold. Polyquaternium-72: delivers exceptional curl memory benefits for high energy curls with anti-frizz effect.