Learn How to Make Homemade Washing Detergent

Why Make Your Own Washing Detergent at Home

Store-bought laundry detergents can be expensive, with prices ranging from $0.15 to $0.50 per load depending on the brand and type you purchase. Making your own detergent at home costs significantly less—typically between $0.02 and $0.05 per load. For a family doing 8 loads of laundry weekly, this difference adds up to approximately $50 to $150 in savings each year.

Beyond cost, many people choose to make homemade detergent because they want to control what goes into their laundry products. Commercial detergents often contain synthetic fragrances, dyes, optical brighteners, and preservatives that may irritate sensitive skin or trigger allergies. When you make detergent at home, you know exactly which ingredients are present in each batch. This transparency allows you to avoid specific chemicals that may affect your family's health or the environment.

Another reason people turn to homemade detergent involves reducing plastic waste. A typical household might purchase 4 to 6 bottles of laundry detergent annually, which means 4 to 6 plastic containers end up in recycling or landfills each year. Making detergent at home requires purchasing bulk ingredients once or twice yearly, reducing packaging waste substantially.

The basic ingredients used in homemade detergent have been used for cleaning for generations. Washing soda, borax, and soap have documented cleaning properties that work effectively on dirt, oils, and stains found on everyday clothing and household linens.

Practical Takeaway: Before starting, calculate your household's laundry volume and current spending to understand your potential savings. Track how often you purchase detergent and how much you spend to set a baseline for comparison.

Essential Ingredients and Where to Find Them

The foundation of most homemade laundry detergent recipes includes three main ingredients: washing soda, borax, and bar soap. Understanding what each ingredient does helps you make informed choices about your recipe.

Washing soda, also called sodium carbonate, is an alkaline substance that softens water and helps lift dirt and oils from fabric fibers. It differs from baking soda (sodium bicarbonate), which is less alkaline and not as effective for laundry purposes. Washing soda is widely available in the laundry aisle of most supermarkets, grocery stores, and online retailers. Common brands include Arm & Hammer Super Washing Soda. A 3.7-pound box typically costs between $3 and $5 and lasts several months for a typical household.

Borax is a naturally occurring mineral compound that acts as a water softener, disinfectant, and deodorizer. It boosts the cleaning power of soap and helps remove stubborn stains. Borax is found in the laundry aisle near washing soda. A 4.76-pound container of 20 Mule Team Borax, the most common brand, costs approximately $4 to $6. This single container can make multiple batches of detergent.

Bar soap is the third essential ingredient. Common options include Fels-Naptha, which is specifically formulated for laundry and costs about $1 per bar, or Castile soap bars, which are gentler and plant-based. Some people use Ivory soap or other mild bar soaps. You'll need one bar of soap per batch, depending on your recipe.

Optional ingredients that some people add include essential oils for fragrance (lavender, lemon, or eucalyptus), borax for extra stain-fighting power if not already included in your main recipe, and washing soda for increased alkalinity. Baking soda can be added as a secondary deodorizer, though it's less effective than washing soda for actual cleaning.

When shopping for these ingredients, check multiple stores. Prices vary between supermarkets, discount stores like Walmart or Target, and online retailers like Amazon. Buying in bulk when you find sales extends your savings further. Many people purchase a six-month to one-year supply of washing soda and borax during sales periods.

Practical Takeaway: Create a shopping list with the three basic ingredients and visit 2 to 3 local stores to compare prices before making your first purchase. Buy extra washing soda and borax when you find them on sale, as these store well in a cool, dry location.

Basic Powder Detergent Recipe and Instructions

The simplest homemade laundry detergent is a powder formula that requires no cooking and minimal equipment. This basic recipe yields approximately 20 to 24 loads of laundry, depending on how much you use per load.

Ingredients needed:

1 bar of soap (Fels-Naptha, Castile, or similar), grated
1/2 cup washing soda
1/2 cup borax
10 to 20 drops of essential oil (optional, for fragrance)

Equipment needed:

A box grater or microplane for shredding soap
A large mixing bowl
A spoon for mixing
A storage container (glass jar, plastic container, or sealed bag)
Optional: a food processor to break soap into smaller pieces before grating

Step-by-step instructions:

Unwrap your bar of soap and use a box grater to shred it into fine pieces. Work over a bowl to catch the shavings. If your soap is very hard, you can soften it slightly by microwaving for 10 to 15 seconds, or use a food processor to break it into small chunks first.
Pour the 1/2 cup of washing soda into your large mixing bowl.
Add the 1/2 cup of borax to the same bowl.
Add the grated soap to the bowl with the washing soda and borax.
Stir thoroughly until the ingredients are completely combined. The mixture should look uniform in color and consistency.
If using essential oil, add 10 to 20 drops to the mixture and stir well, breaking up any clumps that form. Allow the mixture to air dry for 24 hours before storing if you've added liquid essential oil, as this prevents clumping.
Transfer the finished detergent to a storage container with a tight-fitting lid.

Storage matters for powder detergent. Keep your homemade detergent in a cool, dry place away from direct sunlight and moisture. Glass jars with sealed lids, plastic storage containers, or even sealed plastic bags work well. Properly stored powder detergent remains effective for 6 months to a year.

For use, add 1 to 2 tablespoons of powder detergent per regular load of laundry. Heavily soiled or larger loads may require 2 to 3 tablespoons. The powder dissolves more readily in warm water than cold water, though most modern washing machines will dissolve it adequately in cold water if given time.

Practical Takeaway: Make your first batch on a weekend when you have time to grate the soap without rushing. Keep detailed notes about which soap brand you used, the date you made the batch, and how well it performed on different types of laundry to refine your process.

Liquid Detergent Recipe for Different Washing Machines

Some people prefer liquid detergent because it dissolves more readily in cold water and measures out more like traditional store-bought detergent. Liquid homemade detergent takes more time to prepare than powder but stores longer and works in all washing machine types, including high-efficiency (HE) machines.