I had a Brazilian blowout 4.5 weeks ago. I do not recommend it unless you want straight hair or plan to wear your hair straight. My ringlets turned to limp waves and I am counting down the time till the treatment wears off. I am starting to worry i will have to transition between two textures if my curls don't return.Yes, my hair is softer but for me it wasn't worth it.
I would look into conditioning treatments that won't alter your hair texture.