1. want to change Disodium EDTA and other DMDM Hydantoin, which one should I use instead?[/quote: iwjxhoyi] Disodium EDTA should be stored in the formula. That's right DMDM Hydantoin use Mild Preserved Eco 1% instead ofPro Polymer select Satin Cream Maker 1.0-1.2% instead.2. From the above formula, is there anything that needs to be corrected?Staff - MySkinRecipes