5 thoughts on “Olive Leaf and Matcha Cream Gel [VIDEO]

    1. You can use whatever preservative you’re most comfortable with. Make sure it works with the other ingredients in the recipe though. Some preservatives only work at certain pH ranges. Glycolic acid is very acidic. From what I know, Optiphen Plus works well in acidic recipes below 6, but make sure it can work in very low pH. The targeted pH for this formula is between 3 and 3.5 where Glycolic acid works best. For Fruit Acid Complex, you’ll have to see what the pH range is.

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