Wella Professionals Invigo Volume Boost Crystal Mask is a mask that provides fullness, volume and manageability. This treatment for extra light care makes the hair soft and supple, without weighing it down like a regular hair treatment does. Crystal Mask is enriched with Volume Boost-Blend™ and contains volumizing polymers and light ingredients that make hair silky, smooth and easy to maintain. Available in two sizes: 145 ml and 500 ml. Your mask to add volume to fine hair.