Do I need a formulator with GMP or ISO certification for a probiotic skincare product?

For a cosmetic-positioned probiotic product, GMP certification is not legally required in the US, but it significantly strengthens retailer and investor credibility. EU distribution does require compliance with Good Manufacturing Practice under the EU Cosmetics Regulation. On AJ Cosmo Labs, formulators and labs list their certifications on their provider profiles so you can filter for the credentials your specific project requires.