• Formulating

  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 3 years, 3 months ago 1 Member · 0 Replies

  • preservatives
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