GLUTAMOYL DIPEPTIDE-55 GAMMA DIPEPTIDE-4 is graded A (Safe) by Expert·ING, based on COSING regulatory data.

GLUTAMOYL DIPEPTIDE-55 GAMMA DIPEPTIDE-4

Safety grade: A

This skin-conditioning ingredient is derived from amino acids, the building blocks of proteins. It works to help moisturize and smooth the skin's surface, making it feel softer and more supple. It's commonly used in serums and creams to improve overall skin texture and appearance.

Graded using: COSING.

Last verified: June 9, 2026