Cosmetics Formulation Development

Based on this formula, from clinical test (A Method for Maintaining the Clinical Results of 4% Hydroquinone and 0.025% Tretinoin With a Cosmeceutical Formulation, Journal of Drugs in Dermatology, V14 Issue 4 April 2015) found that Hydroxyphenoxy propionic acid Can act on the skin in terms of whitening well (based on testing using Hydroxyphenoxy propionic acid + ellagic acid + Yeast Extract + Salicylic Acid ) see in Myskinrecipes there is no ellagic acid, I don't know which one can be used as a substitute Unfortunately, I want to follow this recipe. Hydroxyphenoxy propionic acid + ellagic acid + Yeast Extract + Salicylic Acid Thank you very much.

Hello, ellagic acid has a problem with solubility in the formula. therefore has not yet been sold and has no plans to sell until the correct dissolution technique is obtained. to be able to act on the skin