About 2 and a half months ago, I dyed my hair WAY too many times, I eventually had to get it professionally fixed and had to go through hair treatments to get it some-what healthy again. I was wondering when I'm able to dye it again? I was trying to get my blonde hair MORE blonde, and it ended with me having to go with brown hair. I REALLY want my blonde hair back, but don't want to risk MORE damage than normal because of what happened two months ago... please give me some advice.

You could try Sun In it is more natural and I think it lasts longer
I would wait until your hair is no longer damaged.

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If your hair has undergone multiple chemical processes such as bleaching and coloring, please do not put any more chemical processes on your hair for now. Your hair is still fragile and weak, and if you try to go blonde, it could damage it even more. I recommend that you wait until your hair is in a healthy stage before coloring it again. In the mean time, do a deep conditioning treatment at least once or twice a week to help rebuild moisture and repair some of the damage. When your hair is in healthy condition, go back to the salon and see if they can do a corrective color.