Ingredient Compatibility Check

Based on the information available, the ingredients you listed are generally compatible for use in a cosmetic formulation, provided you formulate it as an emulsion (like a cream or lotion) to incorporate the oil-soluble Vitamin E.

Here's a breakdown:

• Water-Soluble Ingredients: Ethyl Ascorbic Acid, Tranexamic Acid, Repair Activator™, and Double Hyaluron Liquid are all water-soluble. They can be combined in the water phase of your formulation.

  • Ethyl Ascorbic Acid and Tranexamic Acid are known to be used together in commercial products, indicating their compatibility.
  • The optimal pH range for Ethyl Ascorbic Acid is 3.5-6.0, for Tranexamic Acid is 3-8, and for Repair Activator™ is 4-5.5. Double Hyaluron Liquid is stable in a wider range (3-9). To ensure stability and efficacy for all, aim for a final formula pH in the range of 4.0-5.5.
  • Important Note: Ethyl Ascorbic Acid should not be combined with Vitamin B3 (Niacinamide) or Zinc PCA in the same formula.

• Oil-Soluble Ingredient: Vitamin E (dl-alpha tocopherol) is oil-soluble. It needs to be incorporated into the oil phase of your formulation.

To combine all these ingredients:

You would typically create an emulsion (like a serum-in-cream, lotion, or cream). The water-soluble ingredients would be dissolved in the water phase, Vitamin E in the oil phase, and then the two phases would be combined using an emulsifier.

Always follow the specific mixing instructions and recommended usage rates for each ingredient as provided in their product descriptions.