These are chelating agents used in hair care products.
More ingredient lists: Alkanolamides Naturally Derived Polymers Cationic Polymers Miscellaneous Polymers Cationic Surfactants Nonionic Surfactants Emulsifiers Humectants Silicones Natural Oils Organic Oils Proteins Vitamins Amines pH Adjusters Salts Alcohols Fatty Alcohols Amine Oxides Chelating Agents Fatty Acids Anti-microbials/Antibacterials Anti-Static Agents PEG-Modified Materials
Chelating agents are used in small amounts to react with metal ions present in hair care products or in the water, in order to improve stability or performance of the product.
Disodium EDTADisodium EDTA-copper
Oxalic acidPotassium or sodium citrate
Tetrasodium EDTATrisodium EDTA