Soda Crystals Laundry Boost works with your normal detergent to remove even tough greasy stains, using a powerful blend of Soda Crystals, oxygen bleach & added surfactants. Formulated to treat a variety of common stains including grease, food & drinks, blood, ink & grass stains. Can be used for machine washing, hand washing, pre-soaking & spot removal. Its ability to soften laundry water helps detergents work better & protects your washing machine from limescale build-up. Can prolong the life of your washing machine as it will use less energy per wash. Perfume- & enzyme-free, reducing the risk of skin sensitivity 18 washes per pack