Started using WEN, it tingles but seemed refreshing. I started to notice that my hair was getting thinner, the drain had more than usual. Thought it was just shedding season. My scalp was sore, itchy, and a burning feeling. My hairdresser said she had no idea. My Doctor said she had no idea. Stopped coloring my hair, nothing has helped. I am hoping that my hair will grow back to its before WEN thickness. What a waste of good money, all to be thrown out.