Living Proof Full Shampoo and Conditioner Duo - 24oz

I have been buying Living Proof Shampoo and Conditioner Restore for a long time. There's not a better shampoo/conditioner in my opinion. I decided to try the gray bottles (Full) and I'm disappointed. The shampoo makes my head itchy. I have super healthy hair and scalp and have never had this problem. It's way too expensive to throw out and move on. **Sigh!!** Super frustrating!