Yikes! I've had some doozies over the years. I ended up with really ashey/silver streaks once and the lady "fixed" them by putting on more blonde color that left my uncolored hair yellow and the streaked part blue! I wore a hat for a long time.
I won't talk about my home haircolor follies.
When I was 16 (a bazillion years ago), I decided I wanted to be a blond surfer dude. So I did the home bleaching thing.
The resulting color of orange has not been ever seen in nature NOR in the most punkiest of punk hair colors (punk was many, many years away). I went to the beach anyway, hoping to "sun bleach" it to get it truly blond. It just got weirder.
After a week or so, I just dyed it back to brown and nursed it through the summer with a few more colorings.
I have no idea how you chicks switch hair color all the time, but it can't possibly be good for you.