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Arnica montana in skin cream
I have recently added arnica to one of my water based skin cream formulations to very good effect when applied to sore muscles and joints. There is a marked pain relief.
My problem is how to calculate the safe level to use in a cosmetic. It seems many people will sell me “100% pure” arnica but this is usually diffused into olive oil, sunflower oil or similar.
Is anyone able to advise me where I may obtain some accurate information on the actual quantity of arnica in a diffused product and therefore the quantity I need to add to achieve a level of 1% total arnica in my skin cream.
Many thanks.
MacPS: Sorry if this in in the wrong discussion. I am new here.
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