Save money with Alterna Caviar Body Building Miracle Volume Shampoo 1000ml salon backwash size. It thickens your hair from root to tip. You will achieve, thicker, plumper, stronger hair with every time you use. This sulphate-free shampoo builds thickness and volume, protects your hair colour and improves the overall appearance of fine, thin hair. It also comes with a really handy pump for use in the shower.