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how can oil be not soluble in other oil?!!!
Actually for making hair serum wich giving smooth and shine effects i make a mixture of :
mineral oil : 90 %
Castor oil : 10 %
So the result is a product with two phases where the castor oil is in bottom.
So first of all i lookforward for explication why two oil oils are not mixcible ( surprising thing for me), and can heating be good solution to mix them? unless how can we mix them?
Thanks in advance. -
5 Replies
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Castor oil is highly polar whereas mineral oil is non-polar. If you’ve ever heard “like dissolves like” in a chemistry context, polarity is usually what that refers to. Water is polar and can mix with other polar solvents. Non polar emollients are miscible with eachother. But putting a polar substance into a non polar one results in the two eventually separating out.
One way you can get these two to mix is by mixing them with a solvent emollient- something like c12-15 alkyl benzoate. Choose something soluble in mineral oil and disperse the castor oil in it, and add. Like solubilizing a fragrance oil into water. Very similar idea. Maybe try alcohol as well, or an ethoxylated surfactant/emulsifier
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Thanks @gld010 actually it is intersting your explication and appriciate your solutions given .
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O/O emulsion interesting concept. I already know about W/W emulsions..
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jeremien said:O/O emulsion interesting concept. I already know about W/W emulsions..
That’s two new thing I have learned today!
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Thanks @jeremien if you have any information about it or link for more details about that.
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