Formulation Compatibility and Stability Issues

Asked by: sayrom5955 On: December 30, 2022 Product Type: Cosmetics Answered

Question

I have put together the following cosmetic formulation. Could you please review its feasibility, compatibility, and stability based on the ingredients and percentages provided?

Alpha Arbutin  (Switzerland)     2 %
ActiveProtec™ OX     0.6 %
Pro Polymer ™ ( Gel Maker )  0.8 %
Double Hyaluron Liquid   0.4 %
Mild Preserved Eco   1 %
Propanediol  (1,3- Propanediol )        2 %
Flora Solve ™ Clear  2 %
PEG-40 Hydrogenated Castor Oil   0.5 %
Ampho-Glycolic   2.5 %
Trisodium Ethylenediamine Disuccinate    0.5 %
Ethoxydiglycol   2 %
chlorphenesin  /  Phenoxyethanol     0.6 %
น้ำกลั่น 0.36/1g     73.1 %
Laurocapram  (Water Soluble)     2 %
Safe-B3 ™ ( Vitamin B3, Niacinamide )    5 %
GlucoBright ™ ( Acetyl glucosamine )     5 %
 รวม 100 %

Answer

Formulation Compatibility Analysis

Based on the list of ingredients and their percentages, it is possible to physically mix these components together. However, formulating a stable and effective product with this specific combination presents significant challenges, primarily due to the conflicting pH requirements of several key ingredients.

Here are the main points to consider:

Conclusion:

While the ingredients can be physically combined, achieving a stable, effective, and safe formulation with this exact composition is highly problematic due to the severe pH incompatibility between Ampho-Glycolic and the majority of the other ingredients. Combining Alpha Hydroxy Acids (like Glycolic Acid) with other pH-sensitive actives often requires careful formulation strategies, such as pH adjustment (which may reduce AHA efficacy) or separating these ingredients into different products used at different times.

Therefore, this formulation as listed is likely to be unstable and may not deliver the intended benefits of all the active ingredients simultaneously. It is recommended to adjust the formulation significantly or reconsider the combination of ingredients to ensure compatibility and stability.