Is WEN safe for keratin treated hair?

I'm curious to know, "Is WEN truly SAFE for hair that's been treated with keratin?" I've heard some concerns about using certain products on chemically treated hair, and I want to make sure I'm making the best choice for my hair's health. Can you provide any insight into how WEN might interact with keratin-treated hair and whether or not it's a safe option? I'd appreciate any information you can give me to help me make an informed decision.