Optiphen revisited…

In this post and this post, sfs asks: Could Optiphen be used in an anhydrous product? Both Lotioncrafter and the Herbarie list it as a preservative for all types of products.In this post, Sciarretta Farms said: Are you sure that all the preservatives in the Optiphen family are only for water soluble products? A lot of people use…

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