
In our effort to reduce environmental impact and make the most of resources, learning to make soap with recycled oil becomes a sustainable and beneficial alternative for caring for our skin.
In this article, we will guide you through the process and provide information about the ingredients, steps, uses, instructions, contraindications, and benefits of this practice.
Ingredients for making handmade soap with used oil
To make soap with recycled oil, we will need the following ingredients:
- 1 liter of recycled olive oil.
- 1 liter of water.
- 200 grams of lye (sodium hydroxide).
- Essential oils (optional, to add fragrance or properties). You can add 10 to 20 drops according to your fragrance preference.
- Soap molds. Enough to hold the amount of soap you are making.
- Protective gloves. Very important for preventing burns to the hands.
- Safety goggles. Essential for protecting us from the emitted gases.
- Mask. To avoid inhaling the gases once the lye begins to react.
- Hand blender or mixer. For mixing the ingredients.
- Heat-resistant container. Where we will pour all our ingredients to make the soap. It is important that it be made of glass or stainless steel, never aluminum.
Steps for making soap with used oil
Preparation
Put on your gloves, mask, and safety goggles. Make sure to work in a well-ventilated area covered with newspaper or plastic to protect the surface.
Measuring
Weigh the recycled oil and the lye separately, following the proportions previously indicated in the recipe.
Dissolving the lye
In a glass or stainless steel container, slowly add the lye to the water and stir carefully until it has completely dissolved.
Keep in mind that this mixture will release heat, so you must exercise caution.
Heating the oil
Heat the recycled oil to a low temperature in a heat-resistant saucepan. Do not let it boil.
Mixing
Pour the lye solution into the hot oil, stirring constantly until the mixture has a homogeneous consistency.
If you want to add fragrance or other properties, you can mix a few drops of essential oils of your choice into the mixture.


Pouring
Pour the mixture into the soap molds and gently tap them on a surface to remove air bubbles.

Resting
Cover the molds with a cloth and let the soap rest in a cool, dry place for at least 48 hours, allowing it to solidify and cure.
Unmolding and curing
Remove the soaps from the molds and let them rest in a dry, well-ventilated place for at least 1 month so that the soap fully cures before use.
Uses of homemade soap made with used oil
- Wash clothes or dishes.
- Facial and body cleansing: Use the soap as part of your daily cleansing routine to remove impurities and keep your skin fresh and healthy.
- Hair care: Some solid soaps can be used to wash your hair, providing gentle cleansing free from harmful chemicals.
- Personalized gift: Handmade soaps made with recycled oil are unique and sustainable gifts for your loved ones.
Precautions
- Avoid direct contact with the eyes and, in case of irritation, rinse with plenty of water.
- If you have a skin condition, consult a dermatologist before using the soap.
- Always perform a sensitivity test on a small area of skin before using the soap on your entire body.
Contraindications
- If you are allergic to any of the ingredients mentioned, avoid using the soap.
- Not suitable for people with open wounds or extremely sensitive skin.
Benefits of using soap made with used oil
- You contribute to environmental protection by recycling used oil.
- You get a natural soap free from harsh chemicals.
- You can customize your soap with different fragrances and shapes.
- You save money by making your own personal care products.

Conclusions
Remember that soap making requires caution and proper knowledge of the ingredients and process.
Take a step toward sustainability and caring for your skin by making soap with recycled oil! Unleash your creativity and enjoy the benefits of a natural, personalized product.
If you're looking for inspiration or want to buy them directly, take a look at the handmade soaps in our online store.
2 comments
Buenas noches, soy seguidora de vuestra página porque me encanta lo artesanal, siempre he usado jabon de sosa para la ropa lo aprendí de mis abuelas. Siempre he querido aprender a hacer jabón, tengo dos preguntas, el agua tiene que ser fría? Los moldes para la mezcla de que material?
Hola, vivo en ourense, Galicia. Sabrías por favor donde puedo comprar algunos productos para jabones artesanales? Por ejemplo Glicerina vegetal.
Saludos