Difficulty Dissolving Hyaluronic Acid Powder

You are experiencing difficulty dissolving Hyaluronic Acid (both standard and nano) in your formulation, resulting in sticky clumps, despite following your usual process.

The staff suggested that mixing the solution after refrigeration while it is still cold might help, as this is when Hyaluronic Acid dissolves most easily. You mentioned that you already mix while the solution is cold and will try again.

If you continue to experience issues, here are a few general tips for dissolving Hyaluronic Acid powder:

• Sprinkle Slowly: Add the HA powder very slowly and evenly onto the surface of the water while gently stirring. Avoid dumping it all in at once, as this can cause clumping.
• Allow Hydration Time: Ensure the powder has enough time to fully hydrate. Your 6-hour refrigeration step is good for this.
• Gentle Mixing: Initially, gentle stirring can help disperse the powder before using a handheld mixer for a short period to ensure homogeneity without creating too much foam or heat.
• Check Water Quality/Temperature: While DI water is used, ensure it's clean and the temperature is consistently cold during the hydration/initial mixing phase as recommended.

Remember that the staff also offered to have you send the product back for inspection if the problem persists. This might be helpful if you suspect an issue with the specific batch.

Hopefully, trying the process again carefully will resolve the issue.