Citrus Essential Oil - Changes Formula Color Over Time

I was wondering if anyone has experienced formula color changes with citrus-based essential oils? We have noticed that after about a month or so our cleaning product turns from amber to a reddish-orange. When we removed the citrus-oil we did not get that result. I have seen "de-colorized" versions of citrus oils, but not sure if that would solve the problem. Thanks for any input!

Comments

  • PerryPerry Administrator, Professional Chemist
    Yes, that is a common problem with citrus oil. We just used less of it since it was a claims ingredient and that solved the problem.
  • BelassiBelassi Member, PCF student
    Oxidation causes that. I've seen it in D-Limonene.
    Cosmetic Brand Creation. Concept to name to IMPI search to logo and brand registration. In-house graphic design inc. Pantone specs. Cosmetic label and box design & graphics.
  • heraklitheraklit Member, PCF student
    After about six months, I haven't see any color change in a shampoo with 0.5% orange oil and 0.1% tocopherol / rosemary antioxidant. Could usual antioxidants solve the problem?
    Also citrus oils are very sensitive and need proper storage.
  • BobzchemistBobzchemist Member, PCF student
    We see it all the time here at Beaumont, where we make quite a few citrus-based products. It's mostly an oxidation problem. You either have to use an anti-oxidant or live with the color change. De-colorized versions only remove a small amount of the problem. It's possible to color products beforehand to minimize the effect of the color change.

    Most of our consumers seem to be OK with the concept that natural-based cleaning products vary in color and/or change color over time, by the way.
    Robert Zonis, Sr. Formulation Chemist, Beaumont Products "All opinions and comments expressed are my own, have no relation to Beaumont Products, are fully copyrighted, and may not be used without written permission."
  • Great, thank you all!

    @Bobzchemist - any suggestion on a good water-soluble anti-oxidant? 


  • BobzchemistBobzchemist Member, PCF student
    Rosamox
    Robert Zonis, Sr. Formulation Chemist, Beaumont Products "All opinions and comments expressed are my own, have no relation to Beaumont Products, are fully copyrighted, and may not be used without written permission."
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