SOS Recovery Hyaluronic Acid & Collagen Extra Volumizing Pre-Wash Hair Mask is specially formulated for dull, lifeless, weak and damaged hair. The special formula helps the hair to look thicker, smoother, more voluminous, healthier, stronger and shinier. While Hyaluronic Acid penetrates deeply into the hair and offers intense care, Herbal Keratin helps to reduce hair loss and strengthens hair roots for shinier hair. Thanks to its intense volumizing action, it helps you to have shiny, smooth, and strong hair from root to tip. It doesn’t weight the hair down.