Nourish your hair from root to tip with the Hair Gain Hydrating Shampoo Refill, a moisture-restoring formula designed to make hair-washing days a breeze. The shampoo's gel-like texture is designed to cleanse and nourish, leaving hair soft, smooth and visibly healthier. While marshmallow root extract aims to reduce friction between hair strands to minimise tangles, peptides work to boost resilience. Gentle and comforting on the scalp, it builds up to a light lather.