Achieve silky smooth locks with Biolage Core SmoothProof Deep Treatment Pack. Formulated with Camellia and Castor Oil to strengthen and condition hair, promote healthy hair growth, retain moisture and smooth hair. Frizzy hair is controlled, feels softer and is more manageable. This hair mask encapsulates hair in a protective shield and delivers humidity control and anti-frizz smoothness for healthy, nourished hair.