Yesterday, we took a look at how changes in oils and preservatives might impact a lotion. What else could be an issue here"

Fragrance and essential oils aren?t inert ingredients: We know vanilla can make things brown, but it can also thin out a product thanks to the vanillin. This is why we may have problems working with vanilla with polymeric emulsifiers (ones we can use cold) that contain a polymer, like Aristoflex AVC, or a gelling agent, like Sepimax ZEN or Ultrez 10, and surfactants. I used vanilla fragrance oil in this formula, and it remained stable, which is a good thing.

More information on this topic:
Understanding the Vanillin Villian (my article from Handmade Magazine
Did vanilla turn my lovely lotion brown"

Is anyone interested in learning more about the chemistry of how vanilla messes with gels" I think it?s really interesting, but I also wear molecular earrings and read chemistry texts in bed, so I can accept my opinion might be in the minority. :-)
What?s in myrrh essential oil" ?The main chemical components of myrrh oil are a-pinene, cadinene, limonene, cuminaldehyde, eugenol, m-cresol, heerabolene, acetic acid, formic acid and other sesquiterpenes and acids.? (Reference) I?m not seeing anything here that should destabilize a lotion, so this is probably not the issue, but I can?t be completely sure as I haven?t used it in this formula.

More information on the chemistry of myrrh essential oil:
Compound Interest, chemistry of myrrh
My...