Marley\'s Reusable Shampoo Bottle can be used together with Marley\'s Shampoo Flakes, a unique product with which you can easily make your own shampoo in easy 4 steps Marley\'s believes in the Reuse, Reduce & Recycle principle. Reuse materials, reduce single use plastics and give products a new lease of life instead of throwing them away Made of HDPE (High density polyethylene) Marley\'s Shampoo Flakes are available in different scents: Mandarin & Lavender, Eucalyptus & Green Clay, Beer & Frankincense.