Nioxin Styling Volumizing Thickening Mousse is a hair thickening mousse that provides manageable volume and hold for thin hair. The mousse contains ProThick Technology, which is a professional complex of thickening polymers that lengthen and form bonds between the hair fibers. This volumizing styling mousse controls static electricity, improves hair volume and makes hair soft. New look, same fantastic formula. Nioxin Styling Volumizing Thickening Mousse is the new title of the former Nioxin Bodifying Foam. Dermatologically tested.