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Can you afford to head to a salon? You probably need a deep conditioning treatment, one better then what you can buy at a store. (Moroccan Oil is awesome) If you can't afford that, I always like to use hot oil treatments (super cheap, too!!) You need a great conditioner. I recommend Nexxus KerapHix Restorative Strengthening Conditioner. It's a bit pricey, but totally worth it.
Brazilian blow outs contain really dangerous chemicals, I would stay far away from them.