I don't know, but I plan on finding out. After several trips to the salon and gradually lightening my hair in the most healthy way possible, this is where I am:

I don't know that I'm quite finished with it yet. I may do more, color-wise. But it's a huge change! I didn't even realize it until I put these two pictures next to one another. But I like it. I'm a fan. It helps that I've got the Mexico tan lingering, too....but it's just in time for Spring.
Thoughts?