Formulation and Mixing Method for Silicone Cream with Azelaic Acid, Vit B3, and NAG
Asked by: nuyo_boom
On: June 29, 2013
Product Type:
Cosmetics
Question
Could you please provide a stable formulation and detailed mixing instructions for a silicone-based cream containing Vit B3, NAG, and Azelaic Acid? I plan to use ingredients such as Cyclomethicone, Silicone Gel, Vegetable Glycerin, Light Cream Maker, Phenoxyethanol, and Disodium EDTA. I would also like to know if Lactic Acid is compatible or necessary in this type of formula.
Answer
Based on the staff's reply, here are the detailed mixing steps for your formula:
First, please note the suggested adjustment: remove Lactic Acid from the formula.
The mixing process is divided into two parts:
Part 1: Water Phase
- Combine all ingredients for the water phase:
- Distilled Water
- Phenoxyethanol (0.1%)
- Vit B3 (4%)
- NAG (4%)
- Azelaic Acid (10%)
- Disodium EDTA (0.2%)
- Stir until everything is completely dissolved.
- Set this mixture aside.
Part 2: Silicone Phase
- Combine Cyclomethicone (35%) and Silicone Gel (30%).
- Mix until they are completely homogeneous. Using a mixer will help, as manual stirring may take a long time. Do not use heat.
- Tip: Slowly add Cyclomethicone to the Silicone Gel while stirring continuously. This helps them blend more easily than adding all the Cyclomethicone at once.
- Once homogeneous, add Vegetable Glycerin (5%) and mix until combined.
- Then, add Light Cream Maker (2%) and mix until combined. This completes the silicone phase.
Combining the Phases
- Immediately add the Water Phase (from Part 1) into the Silicone Phase (from Part 2). Do not wait too long after preparing the silicone phase, as the Light Cream Maker might separate.
- Stir continuously until a silicone cream texture is formed. This step may take about 8-10 minutes.