Home Cosmetic Science Talk Formulating Preservation help for a scalp tonic

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  • Preservation help for a scalp tonic

    Posted by francisa on August 24, 2021 at 6:26 pm

    I am making a scalp tonic that uses infused herbs instead of herbal extracts w/ glycerin. The formula also includes a small percentage of acetic acid. What should I use to preserve this? Thanks! 

    francisa replied 2 years, 9 months ago 1 Member · 0 Replies
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