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Anhydrous Oil blend separating after production
Hello I need some help with an anhydrous oil blend I am testing out, please see formula below:
Olive Oil 40%
Shea Oil 14.5%
isopropyl myristate 20 %
Stearic Acid 20%
Henna Oil 1%
Palm Kernel Oil 1.3%
Vitamin E 1%
Fragrance 2%
Mica 0.20%
After a few days I notice a separation at the bottom. The stearic acid was added to create a thicker oil that would suspend the mica to an extent. I melt the Oils and the stearic acid together, cool then rapidly while stirring constantly. I add the isopropyl myristate after cool down. I suspect the separation is coming from the isopropyl myristate and I am not sure how to resolve this. Your assistance will be appreciated.
Thank you!
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4 Replies
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You are advised to DEL the stearic acid and substitute 12-hydroxystearic acid @5.0% in its place. You will see a little more suspension property since you will see much more thickening.
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Thank you very much I have never used 12-hydroxystearic acid before, I will research it and use it as recommended. You think the stearic acid the cause of the separation?
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Is there a specific reason that you blend the isopropyl myristate at the end?
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I was trying to avoid product degradation. I know IPM can be hot or cold processed though.
I will try adding it to the heated phase and see what happens.
Thanks Maria!
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