Chelating agents react to form complexes with metal ions susceptible to affecting stability and/or the aspect of cosmetic products. Widely used in soaps for sequestering calcium, a component of limestone.
Among chelation agents:
• EDTA (Disodium EDTA, Tetrasodium EDTA ...)
• Etidronic Acid
• Oxalic Acid and derivatives
• Phytic Acid