How to make homemade soap: Recipes

Homemade soap

Making soap at home is not a crazy idea. It requires taking some security measures, but it does not involve major complications. Our goal in Decoora today is to lose your fear and encourage you to make your own homemade soaps for the washing machine and toilet.

How much soap do you use at home monthly? It is essential both for washing clothes and for our own personal hygiene, so the amount is not disdainful. Doing it at home in addition to saving us money offers us a solution to recycle used oil. Is not it to think about it?

How to make soap: Theory

The reaction that occurs in the soap making process is known as saponification. It occurs when a fatty acid is mixed with an alkali, traditionally at high temperature. But we can also make them at home without the need to heat the mixture and with basic kitchen tools. We show you how!

Natural soaps are made mainly from soda, water and oils . This basic formula is usually also incorporated colorant and natural active ingredients to enrich the soaps with beneficial properties for the skin. In general, what are the main ingredients of a soap?

  • Alkali: While caustic soda is essential for making solid soaps, potash is more suitable for the production of hand-made liquid soaps.
  • Oils: We can choose from a wide range of oils. It is customary in the manufacture of soap to combine solid and liquid oils at room temperature, in a ratio of 60% - 40% respectively. The most common solid oils are coconut oil, shea butter and cocoa; while among the liquids are frequent olive oil, almonds, avocado or castor. Each oil you choose will require a specific amount of soda to produce the saponification reaction and transform fats into soap. You can calculate it by multiplying the amount in grams of the oil or oils by the saponification index that you will find in tables.

Saponification index

  • Demineralized water. The water is used to dissolve the caustic soda and thus form the lye, the medium where saponification occurs. It is advisable to use demineralized water because, unlike tap water, it does not contain impurities or minerals or salts that can intervene in the process.

Fabrication process

The most common alkali used to make solid soaps is sodium hydroxide or caustic soda, a highly corrosive component whose reaction with water causes toxic fumes that require us to take certain safety measures as well as to have the properly ventilated space , as explained in the following basic step by step:

  1. Gather everything what you will need: a glass container large enough to make the mixture, a glass thermometer, a blender, a casserole, a wooden spoon, all the ingredients properly weighed, silicone molds, gloves and safety glasses.
  2. Place in the molds the dried flowers (if you are going to use them), so that when unmolding the soap dishes you can see them attached to the soap.

Homemade soap

    1. Put on your apron, gloves and safety glasses and pour the water into the glass container. Place it under the extractor hood and add caustic soda very carefully and very slowly so that it reacts, taking heat and dissolving before throwing more. Once poured and dissolved all the soda leaves the mixture to rest until its temperature drops to 40ºC.
    2. Meanwhile, in a casserole heat the oil over low heat until it reaches 40ºC. Mix it with the soda and beat until you achieve a thickness similar to that of a gel. Before it cools, add the essential oils, seeds or aromas and stir to mix the mixture.
    3. To end, distribute the mixture in the mold or the molds. Cover with a towel and let stand for 24 hours, to cool completely. Only then, unmold the soaps and keep them for a month in a cool and dry place so that they dry completely, lose the remains of water and the soda completes its neutralization.

Molds for soap

Recipes of solid homemade soap

With the basic guidelines that we have given you, you can make basic soaps to wash clothes or take care of the skin like the ones we propose. As you take confidence and read more about the subject, you can play with the ingredients and create formulas suitable for our skin type.

Soap for washing clothes

This soap has been used over the years to wash clothes and recycle, at the same time, the used oil generated at home. It is a solid soap that we can also use liquid form . How? Crushing the grated soap with twice its weight of water, until achieving a mixture with a consistency similar to commercial detergent. A process that we can lighten by heating the water over low heat.

used oil household soap

  • Ingredients : 1 K. of used and cast oils, 350 g. of distilled water and 140 g. of caustic soda.
  • Notes: To the basic recipe we can add some aroma or perfume of our liking: essential oil of lemon or lavender, for example.

Soaps for the toilet

You will find numerous recipes to make solid soap for the toilet. The Aloe Vera and Tea Tree that we propose are two of the most popular. The first favors the dermatological regeneration and keeps skin healthy and hydrated, while giving it luminosity. The second is ideal for oily skin because it has antibacterial properties.

Homemade soap

  • Homemade aloe vera soap : The pulp of 2 branches of aloe vera, 750 g. of olive oil, 95 g. of caustic soda, 234 g. of distilled water, 2 tablespoons of honey.
  • Tea Tree Homemade Soap : 170 ml of water, 65 g of caustic soda, 3 glasses of olive oil, 60 ml. of almond oil, 60 ml. of avocado oil and 20 ml tea tree essential oil.


You have the basic concepts and even some simple recipes with which to start. Will you be encouraged to make homemade soap after reading our tips? Doing it has its drawbacks but it is not complicated as long as the safety rules and the indicated steps are followed.