Formula Compatibility and pH Adjustment

Regarding your proposed gel formula for repairing UV damage, softening, and strengthening the skin using natural extracts:

• Formula Compatibility: The ingredients you've listed - Green Tea Extract, Calendula Extract, Cucumber Extract, Disodium EDTA, and Xanthan Gum - are compatible with each other in a water-based gel formulation. They can be mixed together as planned.

• pH Adjustment for Green Tea Extract: You do not need to specifically adjust the pH for the Green Tea Extract at 5% concentration. The overall formula is expected to have a mildly acidic pH (around 5-6), which is well within the suitable range for Green Tea Extract (pH 4.0-6.5) and all other ingredients in your formula. This pH range is also beneficial for the skin.

• Expected Results: The natural extracts included have properties that support your goals:

  • Green Tea Extract (Hi-EGCG™): Known for powerful antioxidant effects, helping to repair skin damage from UVA and UVB rays, reducing inflammation, and improving skin elasticity.
  • Calendula Extract: Has anti-inflammatory, moisturizing, and skin-strengthening properties, suitable for sensitive or irritated skin and promoting healthy skin layers.
  • Cucumber Extract: Provides softening and soothing benefits.

As the staff mentioned, while the formula is compatible and beneficial, results from natural extracts often take time to become noticeable. Consistent use is key to seeing the desired improvements in UV repair, softness, and skin strength.

Remember to mix the Green Tea Extract into the formula in the final step when the temperature is below 40°C to maintain its effectiveness. Using Disodium EDTA helps prevent metal ions from affecting the quality of the extracts.