How to make liquid laundry soap: recipes, proportions and secrets

Liquid laundry soap is a universal product that saves the budget, replaces half of household chemicals and is suitable for cleaning, washing, and washing dishes. In stores it is sold at a price of 150 to 300 rubles per liter, although making it at home costs 3-5 times less. The main advantage of homemade soap is control of the composition: without aggressive surfactants, fragrances and preservatives that cause allergies.

In this article you will find 5 proven recipes - from classic dissolving bar soap to making it from scratch from oils and lye. We'll sort it out proportions for different concentrations (from hand gel to floor cleaner), we’ll tell you how to avoid lumps and separation, and tell you which ingredients make soap more effective. For example, adding glycerin or soda enhances cleaning properties, and essential oils mask a specific odor.

Why is liquid soap better than bar soap?

Bar soap (72%) contains up to 64% fatty acids - this is a record among household chemicals. But in its solid form it is inconvenient for many tasks: it does not foam well in cold water, leaves streaks on fabrics, and requires rubbing. The liquid form solves these problems:

• 🧼 Easy to dose - 1-2 tablespoons per bucket of water is enough for cleaning.
• 🧽 Better dissolves even in ice water (relevant for washing in winter).
• 🧴 Suitable for automatic dispensers in washing machines and dishwashers.
• 👶 Less irritating to skin - can be diluted to a safe concentration for children's things.

In addition, liquid soap takes up less space, it is convenient to store it in bottles with a dispenser, and the shelf life increases to 2-3 years (versus 1 year for bar soap if stored incorrectly).

Recipe 1: Classic - from bar soap (without cooking)

The simplest method that does not require special equipment. Suitable for instant cooking soap with a concentration of 10-15% (ideal for hand washing and cleaning). You will need:

• 🧱 1 bar of laundry soap (200 g, 72%).
• 💧 1 liter of hot water (70-80°C).
• 🥄 1 tbsp. spoon glycerin (optional, for plasticity).
• 🌿 10 drops of essential oil (lavender, tea tree - for aroma and antibacterial effect).

Instructions:

1. Rub the soap onto fine grater (or cut into thin slices with a knife). The smaller the chips, the faster it will dissolve.
2. Pour hot water into the shavings in an enamel or glass container. Do not use aluminum containers - the soap will react with the metal!
3. Stir with a wooden spatula and leave for 12-24 hours, stirring occasionally. The soap should completely dissolve.
4. Add glycerin and essential oils and mix again. If the mixture is too thick, add warm water.
5. Strain through cheesecloth or a sieve and bottle.

A sufficient amount of soap has been grated (200 g per 1 liter of water) |

The water is heated to 70-80°C (not boiling water!) |

The container is not aluminum (glass, enamel, stainless steel are suitable)|

There is gauze or a sieve for straining-->

The finished soap will have the consistency liquid gel. If you need a thicker product (for example, for a dispenser), reduce the amount of water to 800 ml or add 1 teaspoon salt as a thickener.

⚠️ Attention: If there are lumps left after dissolving, do not strain the mixture through a fine sieve - it will clog. It is better to heat the soap in a water bath (not higher than 60°C) and mix with a blender.

Recipe 2: Concentrated laundry soap (with cooking)

This recipe gives soap with a concentration of 20-25%which is suitable for automatic washing (dosage: 2 tablespoons per 5 kg of laundry) and removing stubborn stains (oil, grass, blood). Difference from the classical method - cooking on the stove, which accelerates dissolution and removes lumps.

Ingredients:

Component	Quantity	Purpose
Laundry soap (72%)	400 g	Detergent base
Water	1 l	Solvent
Soda Ash	2 tbsp. spoons	Enhances cleaning effect, softens water
Borax (sodium tetraborate)	1 tbsp. spoon	Whitens and disinfects
Lemon essential oil	15 drops	Removes odor and refreshes laundry

Step by step instructions:

1. Grate the soap and add water in a thick-bottomed saucepan.
2. Place it on minimum fire and cook for 30-40 minutes, stirring constantly. The soap should completely dissolve and the mixture should become homogeneous.
3. Add baking soda and borax, stir and cook for another 10 minutes. The mixture will begin to thicken.
4. Remove from heat, add essential oil, cool to 40°C and bottle.

This soap can be stored until 2 years in a cool place. To machine wash, use a liquid detergent dispenser or add directly to the drum.

Recipe 3: Soap from shavings (express method in 1 hour)

If you need to make soap urgently, but don’t have time to wait 12 hours, use this method. It is suitable for daily cleaning (washing floors, windows, furniture) and requires a minimum of ingredients:

• 🧼 100 g of laundry soap shavings (you can buy ready-made or rub a bar).
• 💦 500 ml boiling water.
• 🧂 1 teaspoon of baking soda (to soften the water).

Algorithm:

1. Pour boiling water over the chips in a thermos or jar and close the lid.
2. Shake vigorously for 2-3 minutes, then leave for 30 minutes.
3. Add soda, shake again. The soap is ready to use!

This recipe gives less concentrated soap (about 8-10%), but it is enough for 1-2 cleanings. For storage longer than 3 days, add 1 teaspoon vodka or alcohol solution (40%) - this will prevent the appearance of mold.

⚠️ Caution: Do not use this method to make soap for washing wool or silk - the high concentration of baking soda may damage the fibers. For delicate fabrics, dilute the finished soap with water in a ratio of 1:3.

Recipe 4: Soap from scratch (from oils and lye)

For those who want full control over the composition, suitable method cold or hot saponification. This is a more labor-intensive process, but the result is natural soap without synthetic additives. You will need:

• 🌻 300 g vegetable oil (sunflower, olive, coconut).
• 🧪 120 g caustic soda (NaOH) - Sold in hardware stores.
• 💧 250 ml distilled water.
• 🌿 20 drops of essential oil (optional).

Warning: Working with caustic soda requires compliance with safety regulations:

• 🧤 Use rubber gloves and safety glasses.
• 🪟 Work in a well-ventilated area.
• 🚫 Do not allow alkali to get on your skin or mucous membranes.

Instructions (hot saponification method):

1. Mix water and caustic soda in a glass jar - the reaction produces heat. Cool to 40-50°C.
2. Heat the oil to 50°C (do not boil!).
3. Pour the lye into the oil in a thin stream, stirring constantly. Use silicone spatula.
4. Cook in a water bath for 1-1.5 hours until the mixture thickens to the consistency of sour cream.
5. Add essential oils and pour into molds. The soap will be ready in 24 hours.

To receive liquid soap after saponification, add 500 ml of water and cook for another 30 minutes, then strain.

What to do if the soap does not harden?

If the soap remains liquid after 24 hours, there are two possible reasons:

1. Alkali deficiency - you need to add 10-15 g of NaOH diluted in water and mix.

2. Excess water — place the soap in an open form in a warm place for a day to evaporate the moisture.

Recipe 5: Hand gel made from laundry soap

Laundry soap is suitable for hand hygiene, but in bar form it dries out the skin. Liquid gel with additives solves this problem. Recipe:

• 🧼 50 g of laundry soap shavings.
• 💧 200 ml hot water.
• 🧴 1 tbsp. spoon aloe vera gel (moisturizes).
• 🍯 1 tsp honey (softens).
• 🌸 5 drops of lavender essential oil (antiseptic).

Preparation:

1. Dissolve the shavings in water in a water bath.
2. Cool to 30°C, add aloe, honey and oil.
3. Beat with a blender until it becomes a gel.
4. Pour into a bottle with a dispenser.

This gel does not dry out the skin and is suitable for frequent use. Shelf life: 1 month (due to natural additives).

How to store and use liquid soap?

The shelf life of homemade soap depends on the composition:

Soap type	Shelf life	Terms
Classic (from a block)	1-2 years	Dark, cool place, tightly closed container
Concentrated (with soda/borax)	2 years	Temperature 5-20°C, avoid direct sunlight
Hand gel (with honey/aloe)	1 month	Refrigerator, sealed packaging
Oil soap (cold saponification)	6 months	Dry place, away from moisture

Tips for use:

• 🧺 For washing: Use 2 tbsp. spoons for 5 kg of laundry. For white items, add 1 tbsp. spoon hydrogen peroxide.
• 🧽 For dishes: dilute the soap with water 1:1 and add 1 teaspoon citric acid - this will remove greasy deposits.
• 🚿 For cleaning: 1 tbsp is enough for a bucket of water. spoons of soap + 1 tbsp. spoons vinegar (disinfects and removes stains).

⚠️ Attention: Do not mix laundry soap with chlorine-containing products (for example, "White") - this causes a toxic reaction with the release of chlorine.

Common mistakes and how to avoid them

Even in a simple recipe, you can make mistakes that ruin the soap. Let's consider top 5 problems and their solutions:

1. Soap does not dissolve, lumps remain

   Cause: The water is not hot enough or the chips are too large.

   Solution: heat the mixture in a water bath (not higher than 70°C) and beat with a blender.

2. Soap separates during storage

   Cause: Uneven distribution of ingredients or insufficient mixing.

   Solution: Shake the bottle before use. To prevent, add 1 teaspoon salt or sugar as a stabilizer.

3. Soap is too thin

   Cause: excess water.

   Solution: evaporate excess moisture over low heat or add 1 tbsp. spoon starch for thickening.

4. Soap irritates the skin

   Reason: high concentration of alkali (relevant for soaps made from oils).

   Solution: before use, check with a pH tester (optimally 8-9). To lower pH, add 1 teaspoon lemon juice.

5. Soap does not lather well

   Reason: hard water or low fatty acid content.

   Solution: Use distilled water and add 1 tbsp. spoon castor oil when cooking.

If the soap turns out unsuccessful, do not rush to throw it away. For example, separated soap can be used for cleaning floors (just shake before use), and too caustic — dilute with water and use for cleaning plumbing fixtures.

FAQ: Answers to frequently asked questions

Can I use 65% laundry soap instead of 72%?

Yes, but keep in mind that it contains less fatty acids (60% versus 64%), so its cleaning properties are weaker. To compensate, increase the amount of soap by 10-15% or add 1 tbsp. spoon soda ash per 1 liter of solution.

How to make soap with an antibacterial effect?

Add one of the ingredients to the finished soap:

• 🍋 1 tbsp. spoon lemon juice (natural antiseptic).
• 🌿 10 drops of essential oil tea tree or eucalyptus.
• 🧂 1 teaspoon hydrogen peroxide (3%).

The optimal combination for washing hands is: soap + 5 drops of tea tree oil + 1 teaspoon aloe vera.

Is homemade soap suitable for automatic washing?

Yes, but with reservations:

• Use only concentrated soap (recipe 2) without lumps.
• Dosage: 2 tbsp. spoons for 5 kg of laundry (in the powder tray or directly into the drum).
• To soften the water, add 1 tbsp. spoon soda ash.
• Not suitable for washing wool and silk - only cotton, linen, synthetics.

Before washing for the first time, check the machine's reaction: some models are sensitive to soap residue.

How to replace caustic soda in a recipe with oils?

Alternatives:

• 🧪 Potash (potassium carbonate) - produces a softer soap, but lathers worse.
• 🧼 Ready soap base (sold in soap making stores) - does not require working with alkali.
• 🥛 Lactic acid - for delicate recipes, but the soap will be less detergent.

Important: When replacing alkali, recalculate the proportions according to soap making calculator.

How to enhance the whitening effect of soap?

Add to the finished soap:

• 🍋 2 tbsp. spoons lemon juice (natural bleach).
• 🧪 1 tbsp. spoon hydrogen peroxide (3%).
• ☀️ 1 tbsp. spoon baking soda + 1 tbsp. spoon Boers (for soaking white things).

For washing, add 1 tbsp. spoon of soap + 1 tbsp. spoon of bleach additive per 1 liter of water, soak the laundry for 1-2 hours before washing.