Re: OVERPROCESSED HAIR???
Girl, it is possible that you need a trim. Especially since you are growing your hair from a tapered cut. It's harder to protect your hair when it is shorter. You may want to do some deep conditioning to restore your hair's elasticity.
The trim may help bring it to life if the problem is split ends. I have had this happen and got some hair trimmed off and it bounced back.
Usually after a chemical application the hair losses some elasticity anyway so do the deep conditioners and trim and see where that takes you!