Liquid Glycerin Soap Base

Use unscented (as-is) or add fragrance or essential oils at a ratio up to 1%. It may be possible to load up to 3% with fragrance but all fragrances and essential oils will react different so thorough testing in small batches is always recommended to ensure compatibility. For every 1 oz of base, add 7 drops of fragrance or essential oil and that should equal 1%. The same is true for extracts and other additives. With infinite ingredient combinations, some may require a solubilizer and others may not. We have found that 2% is the "magic number" with additives. Again, compatibility testing in small batches is key. Wait a minimum of 24 hours (preferably longer) as some issues don't surface right away. Things to watch for are loss of viscosity, beading of oils not solubilizing (which can often be fixed by adding solubilizer), and clusters of milky cloudiness. If thickening is desired, the recommendation is to make a solution of 20% salt to 80% deionized water and slowly add that to the base in a small test batch. Include appropriate amount of preservative. It is important to not overload it with salt, or it will collapse so it is recommended to test in a 2-4 oz batch by adding 1 drop solution, mix well and see what happens. If there will be any major issues it will usually show overnight.