Best Laundry Booster For Hard Water

Peter | 03-01-2026

With so many Best Laundry Booster For Hard Water brands on the market – from big names like Arm & Hammer,Charlie’s Soap,Calgon,HARRIS,20 Mule Team to smaller companies – finding the right product can be a real challenge. But we’re here to make your search easier.

We carefully researched and tested a vast range of Best Laundry Booster For Hard Water to help you discover the top contenders that match different needs and preferences. Altogether, we spent over 100 hours evaluating numerous products first-hand.

Our #1 best Best Laundry Booster For Hard Water is Arm & Hammer Best Laundry Booster For Hard Water, based on its stellar performance across all our tests. Below you’ll find more of our top-rated recommendations for great Best Laundry Booster For Hard Water options currently available. Make sure to check out our buying guide too – it’s full of expert advice for choosing a Best Laundry Booster For Hard Water tailored to exactly what you’re looking for. With our help guiding your decision, finding your perfect fit will be a breeze!

Editor's Choice
Charlie's Soap Booster & Hard Water Treatment 160 Loads (2.64 Lbs, 1 Pack) Natural Powdered Water
Charlie's Soap Booster & Hard Water Treatment 160 Loads (2.64 Lbs, 1 Pack) Natural Powdered Water
Premium Pick
Dirty Labs | Scent Free | Bio Enzyme Laundry Booster | 48 Loads (1 lb) | Hyper Concentrated | High
Dirty Labs | Scent Free | Bio Enzyme Laundry Booster | 48 Loads (1 lb) | Hyper Concentrated | High
Budget Pick
ARM & HAMMER Super Washing Soda Household Cleaner and Laundry Booster, 55 oz Box
ARM & HAMMER Super Washing Soda Household Cleaner and Laundry Booster, 55 oz Box

Top 10 Best Laundry Booster For Hard Water

We researched and compared the top products in the Best Laundry Booster For Hard Water category to provide you with these recommendations.

1. ARM & HAMMER Super Washing Soda Household Cleaner and Laundry Booster, 55 oz Box

ARM & HAMMER Super Washing Soda Household Cleaner and Laundry Booster, 55 oz Box
8.9

Arm & Hammer

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  • One 55 oz box of ARM & HAMMER Super Washing Soda Household Cleaner and Laundry Booster
  • 100% fragrance-free and phosphate-free washing soda neutralizes and eliminates odors naturally without the use of heavy fragrances, leaving a long-lasting fresh and neutral clean scent
  • As a laundry additive, it improves liquid laundry detergent performance by up to 15% (1), giving you cleaner, whiter and brighter laundry and upholstery (1) For mustard and blood stains vs leading value detergent alone
  • Great general purpose cleaner for a wide variety of indoor and outdoor hard surfaces like sinks, stainless steel, bathtubs, garage floors and more, a must-have addition to your household cleaning supplies
  • Use as a silver polish to remove tarnish from silver, gold, brass or copper to keep your jewelry, silverware and precious items looking their best

2. Charlie's Soap Booster & Hard Water Treatment 160 Loads (2.64 Lbs, 1 Pack) Natural Powdered Water

Charlie's Soap Booster & Hard Water Treatment 160 Loads (2.64 Lbs, 1 Pack) Natural Powdered Water
9.5

Charlie's Soap

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  • Economical - Environmentally safe phosphate designed to soften water and leave no hard water scale, and at 160 average loads per bag, that is 0.17 cents per load and cheaper than the competition.
  • Boosts cleaning power of laundry detergent: Our laundry softener aids in the removal of tough stains and dirt from clothes and works to boost the cleaning power of your laundry detergent
  • Effective odor and stain removal: Booster formulated to aid in the removal of problem minerals from your water such as calcium, helping rid odors and stains from clothes, leaving them fresh and clean.
  • Safe for the environment: Add to your laundry supplies for a water treatment and laundry booster that and is an eco-friendly product for home use, making it safe for the environment
  • Septic Safe - When used in moderation, formula is safe in septic and municipal water systems. Non-precipitating and will not form scale

3. Calgon Liquid Water Softener, 32 fl. oz.

  • Results in softer, cleaner clothes every time
  • Delivers noticeably whiter and brighter clothing
  • Removes hard water minerals that cause dirt to cling to fabrics
  • Provides limescale protection to prevent white residue

4. Harris Borax Powder Hard Water Laundry Booster and Powerful Multi-Purpose Cleaner, 1.5lb (Unscented)

  • Hard Water Laundry Booster That Fights Stains: Boosts the power of any detergent to remove tough stains, neutralize odors, and brighten laundry.
  • Essential for DIY Cleaning Recipes: A must-have staple for homemade cleaning solutionsperfect for crafting all-natural laundry detergent, all-purpose sprays, scrubbing pastes, and more.
  • Fragrance-Free Formula: Unscented and free of harsh fragrancesgreat for sensitive skin or anyone preferring a clean, fragrance-free experience.
  • Powerful Multipurpose Cleaner: Excellent for cleaning kitchens, bathrooms, and moretackles grime, grease, and mildew on sinks, tile, countertops, floors & carpet stains!
  • Includes Measuring Scoop: Comes with a convenient scoop for easy, accurate measuringperfect for both laundry and household cleaning tasks.
  • Resealable Bag for Long-Lasting Use: Durable zipper-sealed packaging keeps contents fresh and easy to store between uses.
  • Trusted Brand Since 1922: Jobs done right, in and around the home for over a century.

5. Charlie's Soap HE 100 Load Laundry Powder and Booster

Charlie's Soap HE 100 Load Laundry Powder and Booster
7.7

Charlie's Soap

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  • SIMPLE INGREDIENT - Hard Booster is environmentally safe and phosphate designed to soften water and leave no hard water scale. Removes problem minerals from your water such as calcium that keep detergents from working.
  • ECO-FRIENDLY CLEANING POWER: Concentrated Laundry Powder works on all your laundry, from high-tech fabrics to delicates, washing away smells, stains, and left-behind residue from previous detergents.
  • LESS IS MORE: Each bag contains just four ingredients and one tablespoon per dose. No suds, just a deep clean that leaves fabric fresh and soft.
  • SEPTIC SAFE - When used in moderation, formula is safe in septic and municipal water systems. Non-precipitating and will not form scale
  • HYPOALLERGENIC: Non-toxic washing soda and powerful, natural ingredients work together to rinse fabrics completely and leave nothing on your clothes. The fragrance-free formula is ideal for those with sensitive skin and will not mask stains or odors with artificial brighteners or perfumes. Safe for hand washing.

6. Borax 20 Mule Team Detergent Booster, 65 Oz

Borax 20 Mule Team Detergent Booster, 65 Oz
8.5

20 Mule Team

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  • Naturally softens hard water
  • Improves cleaning power of detergent
  • Safe for both standard and high efficiency machines
  • Brightens and deodorizes clothes, bathrooms, kitchens, and more
  • Helping you clean for over 100 years

7. Dirty Labs | Scent Free | Bio Enzyme Laundry Booster | 48 Loads (1 lb) | Hyper Concentrated | High

Dirty Labs | Scent Free | Bio Enzyme Laundry Booster | 48 Loads (1 lb) | Hyper Concentrated | High
9.1

Dirty Labs

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  • GENTLE: Our formula is consciously formulated with 100% bio and mineral-based ingredients. We left out all the harsh chemicals, fillers, toxins, and pollutants commonly found in other boosters to create a hyperefficient, nontoxic, biodegradable formula. We only use the good stuff so your body and the environment are left as clean as your detergent.
  • EFFECTIVE: Our advanced 4-in-1 formula is the first laundry product in the US to feature a groundbreaking bioenzyme that breaks down tough-to-remove biological stains and odors caused by sweat, body grime, and blood. (Think ring around the collar, yellow pit stains, weird grey or yellow stains on your favorite white sheets, and other stains.)
  • ENVIRONMENTALLY FRIENDLY: At Dirty Labs - Less is More. By creating hyper-concentrated formulas, we greatly reduce our package sizes (and thus, our carbon footprint). Our packaging is made of recyclable cardboard. Our scoop is made from responsibly sourced schima superba wood. Our materials are responsibly sourced and extracted directly from nature. We examine every aspect of our product life cycles in order to achieve the safest, most sustainable solutions.
  • DIRECTIONS: Follow your washer and garment care label instructions. For best results, use with Dirty Labs Bio Laundry Detergents. For standard and HE machines. Septic Safe. 1) Use laundry detergent as you normally would. 2) Add Bio Laundry Booster to wash drum before adding clothes.
  • SPECS: 480 g = 48 loads. Free & Clear (Scent Free). Compatible with traditional and HE washers. Optimized for cold water. No synthetic ingredients. Biodegradable formula. Hypoallergenic and safe for sensitive skin. Safe for babies and pets. Cruelty-free. Vegan. No sulfates. No dyes. No parabens and preservatives. No optical brighteners. No chlorine bleach. No 1,4-dioxane. No fragrance. No CA Prop. 65 chemicals. Packaging and formula are BPA-free.

8. Enzyme Laundry Booster Odor Remover - 2 lbs Unscented Enzymatic Clothes Stain Cleaner Powder,

  • Powerful Bio Enzymatic Cleaner: ACTIVE Laundry Odor Removers Boost your normal laundry detergent to effectively target Stains & Odors, not mask them like washing soda or in-wash scent boosters. It uses Lab-proven Biological Cleaning to remove laundry odor & strong smell
  • Heavy Duty Stain Remover for clothes: Our Enzyme Laundry Additive Powder is formulated for Stain Removal of dirty clothes, perfect for Funk, Grease, Armpit Sweat stain, Blood stain, Oil and more!
  • Gentle on All Fabrics: Our Fragrance Free Laundry Boost Plant-based Formula uses zero harsh chemicals. Natural enhancer for whites & colors. Even safe for pesky activewear fabrics
  • Value 64 Load Package: ACTIVE Enzyme Cleaner Concentrated 32-oz size is good for 64 Loads compared to other products with 1 lb or less
  • Compatible with all Washers & Detergents: Add Laundry Booster Powder to your usual detergent & cleaners! HE, Front & Top load Washer Approved. Also use as laundry soak pretreat powder in order to treat set-in stain

9. 20 Mule Team All Natural Borax Detergent Booster & Multi-Purpose Household Cleaner, 65 Ounce, 4

20 Mule Team All Natural Borax Detergent Booster & Multi-Purpose Household Cleaner, 65 Ounce, 4
7.9

20 Mule Team

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  • Add to laundry to help remove tough stains, deodorize and freshen
  • Wipe on counters and appliances to remove grease and grime and make dishes sparkling clean
  • Removes soap scum, hard water deposits, and dirt
  • 20 Mule Team Borax is an amazing, all-natural mineral found in all corners of the globe
  • Families have been using Borax for all sorts of things such as cleaning, laundry, preserving flowers, DIY crafting, and more

10. Calgon 4-in-1 Washing Machine Cleaner and Water Softener Tablets, 75 Count, Removes Limescale,

  • DEEP CLEAN-Effectively removes limescale and other harmful deposits.
  • WATER SOFTENING- Softens hard water to protect your machine and clothes.
  • ODOR ELIMINATION -Neutralizes unpleasant odors.
  • RUST PREVENTION- Helps prevent rust buildup.
  • EXTENDED MACHINE LIFE- Regular use can help prolong the life of your washing machine.

Peter

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