Information on Antioxidant Ingredients and Thai FDA Regulations

You inquired about the maximum permitted concentration of Gallic Acid, Dilauryl Thiodipropionate (DLTP), and Propyl Gallate for cosmetic registration with the Thai FDA, as you plan to use them as antioxidants.

Based on the information available from product descriptions:

• Gallic Acid (Monohydrate): The recommended usage rate is typically 0.1-1.0%. Another form, GalaWhite™ (Fermented Gallic Acid), has a recommended usage rate of 0.1-3.0% (recommended 0.5-1%).
• Dilauryl Thiodipropionate (DLTP): The recommended usage rate is typically 0.01-0.1%.
• Propyl Gallate: For cosmetic applications, the recommended usage rate is typically 0.01-0.1%.

Important Note: The usage rates mentioned above are general recommendations based on product specifications and typical cosmetic formulations. These are not official maximum limits set by the Thai Food and Drug Administration (FDA).

To ensure compliance for product registration, you must verify the official permitted maximum concentration for each specific ingredient directly with the Thai FDA or refer to the latest relevant cosmetic regulations published by the FDA. The percentages you are considering for DLTP (1-4%) and Propyl Gallate (0.5-1%) appear to be higher than the typical recommended rates found in product information.

Always consult the official regulatory guidelines for accurate and up-to-date information regarding permitted ingredients and their maximum concentrations for cosmetic products in Thailand.