Biolage’s Volume Boost Shampoo gives fine, thin hair visible root lift and fuller-looking body without adding weight, thanks to a micro-dosed blend of soy protein and polymers that plumps each strand. Its gentle, non-stripping formula supports lightweight moisture and volumizing shine while helping preserve natural oils, and it remains safe for color-treated hair.Cruelty-free, vegan, and paraben-free, it leaves hair softer, more manageable, and easier to style with a light, buoyant feel. With consistent use, hair looks thicker and stays lifted day after day, avoiding the heavy buildup that can flatten delicate strands.