DIY Mandelic Acid Gel Formulation Questions

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To summarize the answers to your questions:

• Mandelic Acid 20% Formula: Your calculation of 20g Mandelic Acid in 80ml distilled water is correct for achieving a 20% concentration. However, it is highly recommended to start with a lower concentration (e.g., 5-10%) and gradually increase as your skin adjusts, especially if you haven't used Mandelic Acid before.
• Adding Pro Polymer (Gel Maker): Yes, you can add Pro Polymer to create a gel texture. Starting with 0.2% is a good starting point, but you might need to use a higher percentage in acidic formulas like this one to achieve the desired gel consistency. You can add it gradually until you get the texture you want.
• Adding a Preservative: While AHAs like Mandelic Acid have some antimicrobial properties, it is generally recommended to add a broad-spectrum preservative to your formula, especially if you plan to store it for a while or make it for others. This helps ensure the product remains free from microbial contamination.

We hope this summary is clear and helpful! Let us know if you have any more questions.