GABA Natural Usage Rate and Irritation

Based on the information available, the recommended usage rate for GABA is 1-5%.

The reason for this recommendation is based on testing conducted by the ingredient manufacturer to determine the appropriate and safe concentration for use in cosmetic products. This range is intended to balance the desired effects with minimizing potential skin irritation.

Using a higher concentration, such as 10%, is likely to cause skin irritation, including tingling, stinging, or itching, particularly on sensitive skin. While there is no specific legal limit on GABA concentration from the FDA (อ.ย.), manufacturers are responsible for the safety of their cosmetic formulations and any harm caused by irritation. Therefore, the 1-5% recommendation is provided to guide safe usage and avoid adverse reactions. Using concentrations above this range increases the risk of irritation.