Compatibility of Ingredients: Zinc Pyrithione, Zinc PCA, and Sodium Gluconate

Regarding your question about including Sodium Gluconate in a formula with Zinc Pyrithione and Zinc PCA:

Based on the information available, it is not recommended to use Sodium Gluconate in a formula containing Zinc Pyrithione.

• The product information for Zinc Pyrithione specifically advises against using any type of Chelating Agent (such as EDTA or Sodium Gluconate) in the formula. While the reaction might not affect the antimicrobial efficiency of Zinc Pyrithione, it is best to avoid this combination to prevent potential issues.
• Sodium Gluconate is known to be a chelating agent.
• Zinc PCA does not have a listed incompatibility with chelating agents in its product description.

Therefore, even though your formula does not contain EDTA, the presence of Zinc Pyrithione makes the inclusion of Sodium Gluconate potentially problematic due to Sodium Gluconate's chelating properties.