Trisodium Ethylenediamine Disuccinate

Trisodium Ethylenediamine Disuccinate, or EDDS, is a chelant which selectively binds to and deactivates certain metal ions, based on their size and charge. Metal ions are present in hair and in tap water all over the world, and more often than not, have a negative impact on hair color results and product stability. EDDS binds especially to copper to reduce hair damage, color after color, which also improves color results - more true to tone, and more even results from root to tip. Also, this chelant is not impacted by calcium, which blocks common chelants.