Salt/Spa CP Soap - EO Amount?

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Jun 21, 2023
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Hi, I'm formulating a salt bar recipe and had a couple of questions and wondered if anyone knew the answer!

Firstly, I'm looking at doing an 100% salt bar and I want to know how to calculate my essential oil usage rate? This is usually based on oil amount - is this still the case? Or is it oil + salt? As I have seen that a couple of times online but the amount looks staggeringly high to me in my calcs based on 4%?!

Secondly, has anyone ever tried doing a solesiefe spa bar? I'm curious to the benefits/disadvantages of this! (e.g basing the whole water amount on salt water (brine) AND doing a standard salt to oil amount of 100%). I know this would be an extremely hard bar and perhaps a low lather but my thinking is that a 100% coconut bar with a 20% superfat would offset this? I have made one which turned out well and was easy to make but haven't tested it out yet as still curing but would love to hear people's thoughts.

Thank you!
Sep 19, 2011
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Southern California
I always went with around 7% ppo with my fragrance for salt bars because salt always seemed to eat up the fragrance. But I am from the days before IFRA and still do not pay a lot of attention to it. So take my advice with a grain of salt so to say. With EO's I always used Tissarands guidelines.

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