Dissolving Salicylic Acid in Ethoxydiglycol

Yes, Salicylic Acid (BHA) can be dissolved in Ethoxydiglycol. However, solvents like Ethyl Alcohol and Propylene Glycol are generally more effective at dissolving Salicylic Acid.

Regarding the ratio, the exact maximum solubility of Salicylic Acid in Ethoxydiglycol is not specifically provided. When formulating, you would typically dissolve the desired amount of Salicylic Acid (up to the regulatory limit of 2% for leave-on products) in a suitable solvent before incorporating it into your main formula. The amount of Ethoxydiglycol needed would depend on the concentration of Salicylic Acid you wish to dissolve.

Dissolving Salicylic Acid in a solvent like Ethoxydiglycol allows it to be incorporated into liquid or gel formulations. Ethoxydiglycol also functions as a carrier, which can help enhance the delivery of Salicylic Acid into the skin, potentially improving its efficacy.

However, for optimal formulation and performance depending on your product type, consider alternative forms of Salicylic Acid:

• For clear, water-based formulas such as toners or essences, Complex Salicylic Acid (Powder, Water-Soluble) is recommended as it dissolves directly in water.
• For gel or cream formulas, Encapsulated Salicylic Acid (Powder, Timed-Release) is a good option. It is dispersed in the formula and provides a timed release of Salicylic Acid, which can help reduce potential irritation while maintaining efficacy.