One of the easiest ways to make DIY soap is with the cold process method, which involves combining oils and sodium hydroxide lye, causing a chemical reaction called saponification. In the process ...

The actual process takes less than 15 minutes and the soaps are ready to use after a month. If you fancy giving it a try, try our simple step-by-step guide. Ingredients 64g sodium hydroxide (also ...

These can be hydrolysed when they are heated with sodium hydroxide or potassium hydroxide ... insoluble precipitate (scum) to form when soap is used. They are most commonly used in our homes ...