TRESemmé Collagen+ Fullness System, infused with COLLAGEN has been created with GLYCERINE to penetrate inside the hair. The system works to plump each strand and instantly helps hair look thicker! How to use Collagen + Fullness Thickening Balm provides long-lasting visibly thicker and fuller hair to help you create the look you want. Smooth a small amount into the palm of your hand and spread evenly through damp hair. Blow-dry to achieve desired style.