Horse Placenta Serum Formulation

Based on your questions and the staff's advice, here is a recommended formulation for a Horse Placenta serum with a light gel texture:

• Horse Placenta: 3%
• Double Hyaluron Liquid: 10%
• Pro Polymer: 0.5%
• Rose Water: 86.5% (to make a total of 100%)

Explanation:

1. Your initial formula (3% Horse Placenta + 97% water) would be too liquid for a serum and would require a preservative.
2. Water-based formulas need preservatives to prevent microbial growth. Using Rose Water instead of plain water is recommended because it typically contains preservatives already added by the manufacturer, so you don't need to add a separate one.
3. Vitamin E is oil-soluble and would not work as a preservative in a water-based formula without emulsification.
4. Adding Double Hyaluron Liquid helps with viscosity, but for a light gel serum texture, adding a thickener like Pro Polymer is recommended at 0.5%, as suggested by the staff.

Mixing Instructions:

Mix the Pro Polymer into the Rose Water first, stirring or blending until a light gel forms. Then, add the Horse Placenta and Double Hyaluron Liquid and mix thoroughly.