Using Anhydrous Base (Petrolatum Jelly) with Activated Resorcinol to Prevent Color Change and Preservative Use

Based on the discussion, you are interested in the anhydrous base method using Petrolatum jelly to prevent the color change of Activated Resorcinol.

Here is a summary of the information provided by C7 regarding this method:

• Method: You can mix the Activated Resorcinol powder directly into Petrolatum jelly.
• Process: It is recommended to warm the Petrolatum jelly slightly to make it more liquid, which helps the Activated Resorcinol powder dissolve more easily.
• Color Stability: This method is very effective at preventing color change because the base contains no water, significantly reducing oxidation of the Activated Resorcinol.
• Preservatives: Preservatives are generally not needed in an anhydrous base (like Petrolatum jelly) because there is no water for microorganisms to grow. However, if you are concerned about potential moisture contamination, you can add a very small amount of preservative (e.g., 0.3%), but the usual 1% is not necessary.

This approach should effectively address the color change issue you've experienced with Activated Resorcinol.