TRESemmé Collagen+ Fullness shampoo gives you visibly thicker and fuller hair in just one use. The system is infused with collagen and has been created with glycerine to penetrate inside the hair - it plumps each strand and instantly help hair look thicker. Get visibly thicker hair so you can work the best looks - you want a braid, a twist or a bun, then you also want texture and looks that last, you want visibly thicker, fuller hair everyday. And if you need an extra boost of volume use Collagen+ Fullness Conditioner and Thickening Balm (sold separately) to get the texture you need for a longer-lasting, thicker and fuller look.