FREE Sebastian Strengthening & Repair Mask 10ml with the purchase of this product. Sebastian Professional Thickefy Foam for pumped up volume, without the weight. Weightless Thickener with a liquid-to-foam formula which thickens & conditions, weightlessly holding finer hair in place. Use it on damp hair by applying from roots to ends & blow-dry for weightless body. Scrunch into dry hair for added texture & hold or set hair for ultimate thickness & volume.