u/Intotherosegarden__

My hairstylist used 30 volume developer with a demi permanent color on my hair. I usually color my own hair because I am very protective of it. I have always used a much lower developer with demi, and now I am freaking out because I looked up this combo and everywhere says that 30 is way too high for demi permanent colors. My waist length hair now feels very dry and difficult to brush through. I also noticed that as she was detangling, it looked like a lot of hair came out but I figured she was just brushing roughly. Is my hair ruined?