Sebastian Volupt Conditioner Volupt Conditioner is a volume-boosting conditioner with micro-lite technology that delivers volume boost without adding extra weight. The blend of conditioning ingredients creates an invisible layer around hair for voluptuous softness while the color-safe formula contains natural bamboo extract to strengthen hair and lock-in moisture. It is ideal for fine hair. Ideal for fine hair Strengthens hair Locks in moisture Creates voluptuous softness