Oils, Fats & Butters
Lye and Water
Disclaimer: The Handcrafted Soap & Cosmetic Guild is providing this lye calculator to soapmakers free of
charge. Every effort has been made to ensure that the SAP values used herein are accurate. However, even in the best case,
the SAP values provided by reputable sources are only acceptable ranges for each oil. The actual SAP value being used in the calculations
is the average of the highest and the lowest acceptable level for an oil and is generally considered the norm for calculating the lye
necessary for soap. However, the actual SAP value of any batch of a particular oil may be somewhat higher or lower than the value used
in the calculations here (even if it falls within the acceptable range). That all being said, the HSCG is not responsible for any injuries,
losses or other damages that may result from using the information provided herein.
The water amount is calculated based on the amount of lye and is
expressed as a percentage based on the lye/water ratio in the solution.
- 10 oz lye and 10 oz water is a 50% lye solution
- 10 oz lye and 20 oz water is a 33% lye solution
- 10 oz lye and 30 oz water is a 25% lye solution
A 50% lye solution is considered low water and should be used with caution.
A 33% lye solution is considered medium water and is typical in cold process soap
A 25% lye solution is considered high water and is generally used to slow the reaction time.
Click on a recipe name to load the data into the Lye Calculator.
Click the X to delete a saved recipe permanently.
(Apr 22, 2013 7:44 pm)