Formulation pH and Ingredients

Regarding your formulation with Purified Water, Encapsulated Salicylic Acid, Allantoin, and Phenoxyethanol, determining the exact pH of the final mixture requires testing. I cannot calculate the precise pH for you.

However, based on the properties of the ingredients, particularly the Encapsulated Salicylic Acid (Liquid, Timed-Release, Wash-Off), this type of encapsulated salicylic acid is noted to have a pH value closer to the skin's natural pH (approximately 5.0) during its active release period. This suggests the ingredient itself is designed to be less acidic than standard salicylic acid.

As mentioned in the previous reply, the pH of your specific formula is likely to be in the range of 4-4.5, and it may not require adjustment. This pH range is generally suitable for salicylic acid to be effective.

Also, please note the feedback regarding the Allantoin concentration: it should be less than 0.5% of the water content, not the total formula.