Cocoyl Glutamic Acid is a mild surfactant and conditioning agent commonly used in personal care products, such as shampoos, facial cleansers, and body washes. It is derived from coconut oil and glutamic acid, an amino acid. Here are some guidelines on how to use it in various formulations:
1.Shampoos and Hair Cleansers
Usage Rate: Typically used at 1-10% of the total formulation.
Procedure:
Heat the water phase (water and any water-soluble ingredients) to around 70°C.
Add Cocoyl Glutamic Acid to the water phase.
Stir gently until fully dissolved.
Combine with the oil phase (if applicable) and mix thoroughly.
Adjust the pH of the final product to around 5-6. Cocoyl Glutamic Acid works best in this pH range.
2.Facial Cleansers
Usage Rate: Typically used at 1-5% of the total formulation.
Procedure:
Prepare the water phase by heating to around 70°C.
Add Cocoyl Glutamic Acid to the heated water phase.
Stir until fully dissolved.
Combine with other phases (e.g., oil phase, active ingredients) and mix thoroughly.
Adjust the pH to around 5-6 for optimal performance and skin compatibility.
3.Body Washes
Usage Rate: Typically used at 1-10% of the total formulation.
Procedure:
Heat the water phase to around 70°C.
Add Cocoyl Glutamic Acid to the water phase and stir until fully dissolved.
Combine with the oil phase and other ingredients, then mix thoroughly.
Adjust the pH of the final product to 5-6.
General Tips
Dissolution: Cocoyl Glutamic Acid dissolves more easily in warm water, so heating the water phase to around 70°C can help with incorporation.
pH Adjustment: The pH of the final formulation is crucial. Use citric acid or sodium hydroxide to adjust the pH to the desired level (around 5-6).
Compatibility: Test for compatibility with other ingredients in your formulation, especially preservatives and active ingredients.
Preservation: Ensure your final product is properly preserved, as surfactants can sometimes impact the effectiveness of preservatives.
Example Formulation for a Simple Shampoo
Ingredients:
Water (Aqua): 60%
Cocoyl Glutamic Acid: 5%
Cocamidopropyl Betaine: 10% (for additional mild cleansing and foam)
Glycerin: 5% (for moisturizing)
Preservative: 1% (as per manufacturer’s recommendation)
Fragrance or Essential Oils: 1%
Sodium Chloride (Salt): 1-2% (for viscosity adjustment, optional)
pH Adjuster (Citric Acid or Sodium Hydroxide): q.s. (to adjust pH to 5.5)
Procedure:
Heat the water to around 70°C.
Add Cocoyl Glutamic Acid to the heated water and stir until fully dissolved.
Add Cocamidopropyl Betaine and glycerin, mix well.
Allow the mixture to cool down to below 40°C, then add the preservative and fragrance.
Adjust the pH to 5.5 using citric acid or sodium hydroxide.
If needed, adjust the viscosity with sodium chloride.
Pour into a clean container and label.
Always perform stability and patch tests to ensure the safety and effectiveness of your formulations.