Aside from making airline travel a breeze, Shampoo Bars are everything you could want. These ultra-bubbly bars lather luxuriously. Leaving behind clean, soft, bouncy hair. While they look smaller than a traditional bottle of shampoo- that's because liquid shampoo is packed with water as a filler. These are concentrated, so you add the water, and a little rub goes a long way. Feel free to use this all over your body! Beards, Shaving, etc. Nothing but quality all-natural ingredients to so there's no fear of one-use only!