Has anyone tried the Control GX shampoo for colouring the sides of their hair when wearing a system? I have been using it for half a year and I have started to notice some extreme thinning on the sides of my hair since using it. I started to look around and when I checked the amazon reviews I found that many, many people have found that while it dyes the grey hair away it causes your hair to thin. Anyway I was wondering if anyone has tried this and noticed this and if they stop has the hair grown back? Because the sides of my hair are starting to get really sparse since using the shampoo.