Incorporating Pure TECA and Matrixyl 3000 into Sensitive Skin Face Cream

Your updated formulation for the Ultra-Light Summer Face Cream is well-structured for sensitive and rosacea-prone skin. The combination of Vitamin B3 and GlucoBright™ is particularly effective, as these two ingredients work synergistically to improve skin barrier function and brighten the complexion.

Regarding your questions about Pure-TECA™ and the incorporation of your new actives, here are the technical recommendations based on the product specifications:

1. Incorporating Pure-TECA™ (TECA 95%)

The confusion regarding Pure-TECA™ solubility is common because it is a highly concentrated extract that is difficult to dissolve.

• Solubility Reality: Pure-TECA™ does not dissolve in water or oil. It can only be fully dissolved in certain glycols (like Propylene Glycol or Butylene Glycol) at a very low concentration (approximately 1% TECA to 99% Glycol) using high heat (70-80°C).
• The "Dispersion" Method (Recommended): Since your formula calls for 1.00% TECA, you would need a very large amount of glycol to fully dissolve it, which is not practical for a cream. Therefore, TECA at this percentage is typically dispersed rather than dissolved.
• How to add it:
  1. Option A (Cooldown): Add the Pure-TECA™ powder during the cooldown phase (below 40°C). You must use a high-shear mixer (like a stick blender or homogenizer) to ensure the powder is micro-dispersed evenly throughout the cream to avoid a gritty texture.
  2. Option B (Pre-slurry): Mix the TECA powder with your Glycol at room temperature to create a "slurry" before adding it to the emulsion. This helps prevent clumping.
• Heating: Do not heat the entire batch to 85°C just for the TECA. High heat for extended periods can degrade other sensitive components.

2. Matrixyl™ 3000 and GlucoBright™

• Matrixyl™ 3000: This peptide is heat-sensitive. It must be added during the cooldown phase when the temperature of the emulsion is below 40°C. Your planned usage of 3% is the ideal recommended rate.
• GlucoBright™ (N-Acetyl-D Glucosamine): This is water-soluble and heat-stable. You can add it directly to the Heated Water Phase. It works best in a pH range of 3.0–7.0.

3. Formulation Adjustments & Tips

• Synergy: The combination of Vitamin B3 and GlucoBright™ is a "gold standard" for sensitive skin. It helps stimulate natural Hyaluronic Acid production and reduces redness.
• Sepimax Zen: At 0.3%, it acts as an excellent stabilizer for this formula. Since you are adding electrolytes and various actives, Sepimax Zen will prevent the cream from thinning out or separating.
• Double Hyaluron Liquid: This can be added to the water phase or cooldown phase. It provides deep hydration which is beneficial for Rosacea.

Revised Mixing Procedure

1. Heated Water Phase: Combine Distilled Water, Floral Water, Chelating Agent, Vitamin B3, and GlucoBright™. Heat to 70-75°C. Sprinkle Sepimax Zen on top and blend until a smooth thin gel forms.
2. Heated Oil Phase: Combine Emulsifying Wax, Thickener/Stabilizer, Emollients, and Silicone. Heat to 70-75°C.
3. Emulsification: Add the Oil Phase to the Water Phase while mixing with high shear.
4. Cooldown Phase (Below 40°C):
   • Add Double Hyaluron Liquid, Matrixyl™ 3000, and your Preservative.
   • Add Pure-TECA™ (ideally pre-mixed into a slurry with your Glycols).
   • Add Antioxidants, Soothing Agents, and Botanical Extracts.
   • Homogenize well for 2-3 minutes to ensure the TECA is perfectly dispersed.