Our biodegradable booster and hard water treatment is made from an environmentally friendly phosphate that brings out the best in Charlie’s Soap detergents. Without leaving any residue on your clothes or in your washing machine, it controls minerals in your wash water with just 1/2 tablespoon per load. Your septic system and washing machine will also be safe because our booster is completely soluble.

Hard water does not pose a health risk, but it can cause "scale" – mineral build-up in pipes and plumbing fixtures – that reduces the effectiveness of laundry soap. Charlie’s Soap Booster is a non-toxic, biodegradable phosphate that can safely eliminate problems associated with hard water all while remaining environmentally friendly.

Tossing a scoop into the washing machine is all it takes to soften water and get a better clean with each load.

• SIMPLE INGREDIENT – Our booster is made from an environmentally safe phosphate designed to soften water and leave no hard water scale.
• RINSES CLEAN – Rinses completely from fabric, leaving behind no residue on your clothes that can irritate sensitive skin.
• HARD WATER TREATMENT – Removes problem minerals from your water that keep detergents from working properly. 
• NON-TOXIC – Aids in biodegradation in the environment.  
• SEPTIC SAFE – When used in moderation, our formula is safe in septic and municipal water systems. Non-precipitating and will not form scale.