Soda crystals laundry boost works with your normal detergent to remove even tough greasy stains using a powerful blend of soda crystals oxygen bleach and added surfactants formulated to treat a variety of common stains including grease food and drinks blood ink and grass stains can be used for machine washing hand washing pre soaking and spot removal its ability to soften laundry water helps detergents work better and protects your washing machine from limescale build up can prolong