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Air bubbles in thick formulas
We are working on a thick shampoo using a carbomer and having difficulty processing without introducing air bubbles. We are very careful not to induce air when blending but some still manages to get in there. We have a propeller style mixer with a 1.5hp motor. I have even let the formula sit for a day and they won’t come to the surface. Any suggestions?
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2 Replies
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Hey,
Maybe you can use ultrasound afterwards? I dont Know how it works scaled up, but i use it in laboratory size.Another idea would be to use a centrifuge if there is nothing in your formula that could separate.Hope this helps! -
This is why I gave up the idea of using carbomer as a shampoo thickener. IMO it is useless unless you’re happy with trapped bubbles. Anyway, the shear characteristics of carbomer lead to a horrible hand-feel, and the pH limitations are yet another problem.
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