Soap is an alkali (like sodium hydroxide or potassium hydroxide) combined with fats. So, by the very definition of “soap”, you cannot have soap without lye. That is like trying to make a baking soda and vinegar volcano without the vinegar. No vinegar and you’ve just got a pile of baking soda. No lye, and you’ve just got a bucket of fat.
It is important to use very precise amounts of lye, butters and oils in order to completely neutralize the lye and create a luxurious lathering soap that will moisturize the skin. We pride ourselves in having this calculation mastered and have never had any issues with the lye still being active in the soap.
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