I have repeatedly colored my light brown hair black, with a semi. I continued to use a semi each time my roots needed a touch up. I did this about 5 times, each time I would rub a bit of the color over the length of my hair. I want my natural color back. I bought OOps! But after reading posts here, I fear an attack of carrot head. The thought of waiting this color out is terrifying! What should I do?