Living Proof is committed to sustainability by reducing virgin plastic use. This Liter Refill Pouch of Shampoo allows you to reuse your existing bottles, minimizing plastic consumption. It transforms fine, flat, or thin hair into fuller, thicker tresses, delivering volume while thoroughly cleansing the scalp and strands. A proprietary amino cleansing complex gently removes dirt and debris without stripping natural oils. Amaranth peptides support a fuller-looking appearance by plumping fibers, and phytantriol helps strengthen and protect the color vibrancy of chemically treated hair.