Add soap nuts and water to a pot and bring to a boil. Reduce heat, cover and simmer for about 2-3 hours. You’ll know your soap is ready when the soap berries are light tan or grey – that’s a sign that all the wonderful saponin has been extracted. Turn heat off.
Dissolve 1/2 teaspoon citric acid OR 1 teaspoons salt into in warm soup nut liquid... so let it cool down a little first.
Allow the soap to cool (I usually let it sit for about 1-2 hours) and then strain out the soap nuts.
Add about 30 drops of lemongrass and 30 drops of tea tree essential oil into the mix.
Store in a glass gallon jug or container.