Ingredient Compatibility and BHA Formulation Issue

Asked by: batblast41 On: July 10, 2017 Product Type: Cosmetics

Question

I have questions regarding the compatibility of certain ingredients and a specific BHA formulation:

  • Can Reservoir-Tech be used together with Activated Resorcinol?
  • Can Activated Resorcinol be used together with Willow Bark Extract?
  • For a formulation using Glycol-soluble BHA alone with the following composition: Water 88%, PPG 10%, BHA 2%. Will adjusting the pH be necessary or sufficient to prevent precipitation?

Answer

Based on the information provided:

  • Reservoir-Tech (ID 1246) cannot be used together with Activated Resorcinol (ID 493).
  • Activated Resorcinol (ID 493) can be used together with Willow Bark Extract (ID 1117).
  • Regarding the formulation with Water (88%), PPG (10%), and BHA (Salicylic Acid, ID 148) (2%), this formulation cannot be done and will result in precipitation. Adjusting the pH will not resolve this issue.