Using Sodium Lactate in Bar Soap

Thank you for your question regarding Sodium Lactate. As clarified previously, Sodium Lactate is used to help solidify or harden bar soap during the soap-making process. It is not used to turn liquid soap into a solid bar.

When making bar soap (typically through the saponification of oils or fats with a strong alkali like Sodium Hydroxide), Sodium Lactate is added to the lye-water solution before mixing it with the oils. It helps to produce a harder, longer-lasting bar of soap that is less prone to cracking.

The recommended usage rate for Sodium Lactate in bar soap making is typically around 2-4% of the total oil weight in your recipe. It is usually added to the cooled lye solution before combining it with the oils.

Products like Sodium Lactate (60% Liquid, Natural) and Sodium Lactate Plus can be used for this purpose in bar soap formulations.