Hair Gain Hydrating Shampoo Refill is enriched with a peptide, vitamin and marshmallow root complex to intensely hydrate, nourish and strengthen your hair. This 250ml refill cartridge slots perfectly into Hair Gain's beautiful refillable bottle made from 100% recycled materials, or can be used individually. Vegan and Halal certified. No parabens, silicones or sulphates.