Slightly acidic rinse neutralises rinsing water, which is particularly important for people with sensitive skin, eczema or allergies, as well as for small children. The natural pH level of human skin is acidic, whereas laundry detergents, soap, and washing soda are alkalic. This is why clothing containing laundry detergent residue may cause skin irritation. The laundry rinse neutralises alkalic substances and helps the water rinse them off the clothing. When washing in hard water, the rinse also keeps the clothing from fading, a process caused by the soap substances contained in detergents colliding with the minerals in the water. The fibres’ natural properties (towels absorb water again) and appearance (brighter colours) return. The rinse does not damage bamboo fabrics.