Does anyone else have to use shampoo without the ingredient Cocamidopropyl Betaine? Am definitely allergic to this ingredient which leads to major sheds. Had found a great shampoo product but they just switched frothing agents to include cocobetaine so am on the hunt for a product without this ingredient -- just went through every shampoo in the grocery store and every single one had this ingredient. Does anyone have a shampoo without it they like?