Serum Formulation Feedback and Mixing Instructions

Thank you for sharing your serum formulation and questions. Based on your formula and the feedback from the staff, here is a summary and clarification on the mixing procedure:

Staff Feedback Summary

1. Missing Emulsifier: Your formula requires an emulsifier to properly combine the water and oil phases. The staff recommends adding 1.5% of either Satin Cream Maker or Light Cream Maker for a light serum texture.
2. Blueberry Pterostilbene: This ingredient can darken and weigh down the serum. If you plan to use the serum during the day, the staff suggests omitting it.
3. Preservative (Phenoxyethanol SA): Since you are using a high concentration of Rose Water (70%), which contains its own preservative, adding Phenoxyethanol SA is unnecessary. The staff recommends removing it.

Mixing Procedure Clarification

Regarding your specific questions about mixing:

1. Formula Validity: The original formula needs adjustment as per the staff feedback (add emulsifier, remove Phenoxyethanol SA, potentially remove Blueberry Pterostilbene).
2. Mixing Steps: The order of mixing depends on the emulsifier you choose:
   • If using Satin Cream Maker: Combine all water-soluble ingredients. Add Satin Cream Maker and mix until a cloudy gel forms. Then, gradually add the oil-soluble ingredients (Bisabolol and MSH White Absorb TM) into the cloudy gel while mixing until a white serum is achieved.
   • If using Light Cream Maker: Combine Light Cream Maker with the oil-soluble ingredients (Bisabolol and MSH White Absorb TM) and mix them thoroughly. Then, gradually add the water-soluble ingredients into the oil phase mixture, mixing continuously until fully combined.
3. Disodium EDTA: Yes, you can dissolve Disodium EDTA in the Rose Water before combining it with other water-soluble ingredients.
4. Preservative Addition: As noted in the staff feedback, Phenoxyethanol SA should be removed from the formula entirely due to the preservative properties of Rose Water at the concentration used.

By incorporating the recommended emulsifier and adjusting the preservative, you can create a stable and effective serum for your skin concerns.