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Fumed silica and yellowing?
I have been trying to make a clear lip scrub using a fumed silica gellant. However, all versions yellow significantly at 45C. I have a hunch it is the fumed silica, because I read somewhere that small sized silica can contribute to some yellowing in formulas.
Has anyone experienced yellowing of a clear product with fumed silica?Thank you for your help.
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