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You might also try Judi Beerling, a cosmetic formulator and educator for over 30 years with a focus on green ingredients. See her LinkedIn profile here: https://www.linkedin.com/in/judi-beerling-b43433/?ppe=1
Contact details: judi@pertechassociates.co.uk, +44 7803 082252
I am a formulation chemist myself but she is the most knowledgeable formulator I have met in the field of natural or organic cosmetics.