The following information is from: https://thenerdyfarmwife.com/troubleshooting-cold-process-soap-problems/#section33
Soap dries my skin out:
1. Coconut Oil Amount
Reason: Coconut oil is very cleansing when turned into soap and can be drying for some skin types.
Solution: Try reducing the amount of coconut oil down to 17 to 22% of the oils in the recipe. To offset loss of lather, add castor oil at 5 to 7%.
2. Lye Amount
Reason: A higher amount of lye can cause dryness.
Solution: Try increasing the superfat to 6, 7 or even 8%. This increases the amount of free oils in the soap, making it more conditioning. Double check that you used the correct amount of lye and that your scale is accurate. (Don’t ever measure lye by cups or tablespoons as it’s highly inaccurate.)
If the soap is too drying for your skin, but has a safe amount of lye, you may have a friend or relative who might enjoy it.
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