In-salon smoothing treatment lasts up to 12 weeks. Instantly & safely smoothes-out up to 100% frizz and volume, and reduces curl retention by 80%. There’s no formadehyde or formaldehyde derivatives, making it one of the safest salon treatments available. With an exclusive Amino Acid Complex called Carbo-C, Agave Smoothing gently alters the hair’s disulphide bonds, reforming them to make the hair sleek & smooth. Agave plant sugars help hydrate & condition.