Some precautions are necessary. Caustic soda causes a chemical burn if in contact with your skin. So wear gloves, long-sleeved shirt, goggles and mask (for the fumes from the caustic soda). Better the process be done outdoors, away from children and pets. Have in proximity a bottle of vinegar to reduce the extent of the burn, in case of an accident.
1 kg olive oil,
Moreover, we need a spoon or spatula for stirring (wooden or plastic). To save time and effort use a hand mixer. A container to dissolve the caustic soda in the water (it should be resistant to high temperatures, because when caustic soda reacts
with water, the mixture becomes heated. A container to mix the oil with the water-caustic soda mixture. A cooking thermometer. All utensils for the preparation of soap should be for this single use only.
Pour slowly caustic soda in water (never the reverse) and stir slowly to avoid splashing the liquid over us. As you drop the soda you notice that the liquid temperature rises. After the soda is dissolved in the water, add salt (increases hardness to soap) and sugar (increases lathering) and allow the solution to come to the temperature you want.
We can now pour the soap into molds (for molds you can use plastic containers, silicone molds or wooden molds paved with parchment paper or thick nylon inside). We keep them covered in
a warm place for 24-48 hours to stabilize and harden the soap.
Finally, you remove the soap from the molds, cut it into pieces and store it in a cool, shady place to cure. You must wait two months at least, in order to safely use your soap.
Note: you can replace
- The 300gram water with juice, milk or herbal decoction
(chilled from the fridge)
- Sugar with honey