Volumizing hair products for adding the right volume The Soft Volume Set is a set of volumizing hair products that helps you get the right volume and natural-looking body for your hair. VOLU Shampoo gently cleanses for a boost of volume. DEDE Leave-in Conditioner lightly conditions for detangling and softness. This is a Volume Boosting Mousse adds airy volume with a light hold for long lasting styles.