I have posted the photos now and think it may too be the Shea Butter, as it appears in the part of the soap that is without colouring.Have you only had this recently? Any of the butters (I'm looking at you, shea butter!) new for you? That one can be quite grainy in lipbalms etc, so it might be something.
Does it look grainy, if that makes sense? If so, can you post a picture?
Hmm, I'm going with the Titanium Dioxide. Did you crush it first? (Some say coffee grinder, but have found regular mortar and pestle work best for me.)
Did you mix your titanium dioxide in oil or water, (depending on the type you have-oil dispersible or water dispersible), before adding it to the soap?
If this were my soap, I'd say the spots are stearic spots that can form naturally when soap cools slowly from a liquidy state. Two things that seem to minimize the problem for me --
I make sure my fats are just hot enough so the solid fats are fully melted and clear before adding the lye. Maybe this one is a bit of wishful thinking, but my impression is that this helps a bit to minimize these spots. I soap with a high % of solid fats, so just adding hot lye is not enough to fully melt my solid fats.
I also don't use the default "38% water as % of fats" as you appear to be doing. Instead, I set the calculator to "lye concentration" rather than "water as % of fats" and I use 30% to 33% lye concentration. By using to a higher lye concentration than the default settings, my soap does not gel as easily, even if it gets very warm. If the soap doesn't doesn't go into gel, the soap is less able to form different layers and spots of different kinds of soap molecules as it cools. I'd say this is the best solution for reducing these spots.
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