Acne Spray Mixing Steps

This formulation is water-based, so the ingredients should be dissolved or dispersed in the de-ionized water.

1. Prepare the Water Phase: Measure out the required amount of de-ionized water.
2. Add Powder Ingredients: Add the powder ingredients that are soluble in water to the de-ionized water. This includes Niacinamide and Zinc PCA. Stir until fully dissolved.
3. Add Water-Soluble Liquids: Add Glycerin, Ethyl Panthenol, and Licorice Extract to the water phase. Stir to combine.
4. Incorporate Salicylic Acid: For a water-based spray, the standard Salicylic Acid powder is not suitable as it does not dissolve in water. We recommend using a water-soluble form like ActiveRelease™ Salicylic Acid. Add the ActiveRelease™ Salicylic Acid powder to the mixture and stir until dissolved.
5. Add Preservative: Add Mild Preserved Eco to the mixture. This preservative is water-soluble but may require blending for about 5 minutes to dissolve clearly.
6. Adjust pH: Check the pH of the solution. For optimal stability and efficacy of ingredients like Zinc PCA, Niacinamide, Ethyl Panthenol, and Licorice Extract, the final pH should ideally be in the range of 4.0-6.0. Adjust the pH if necessary using a suitable acid or base.
7. Add Remaining Water: Add de-ionized water to reach the final desired volume.
8. Final Mixing: Stir or gently shake the mixture to ensure all ingredients are evenly distributed.
9. Packaging: Pour the finished spray into a suitable spray bottle.

Regarding Salicylic Acid

You mentioned "Salicylic Acid EZ™ 7%". Based on the available ingredients, the most suitable water-soluble Salicylic Acid for a spray formulation is ActiveRelease™ Salicylic Acid.

• Type: We recommend using ActiveRelease™ Salicylic Acid. This is a water-soluble powder form that is easier to incorporate into water-based formulas compared to standard Salicylic Acid.
• Percentage: The ActiveRelease™ Salicylic Acid contains 40% active Salicylic Acid. The maximum legal limit for Salicylic Acid in leave-on cosmetic products (like a spray) is 2% active Salicylic Acid. To achieve 2% active Salicylic Acid, you should use 5% of ActiveRelease™ Salicylic Acid. Using 7% of any Salicylic Acid product would likely exceed the legal limit for active Salicylic Acid in a leave-on product.

Therefore, replace "Salicylic Acid EZ™ 7%" with ActiveRelease™ Salicylic Acid 5% in your formula to ensure water solubility and compliance with regulations.