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If you’re like me and have put your natural hair through rounds of chemical relaxers and frequent flat ironing, you’ve probably definitely made your curlssuper porous (ahem, damaged) in the process. And, as a refresher, porous hair has an open cuticle layer that can’t hold on to moisture or nutrients, leaving your hair dry, brittle, and dull as a result. Ugh. But even though you can’t undo all the damage, you can help get back to the healthy, shiny hair you deserve with a protein mask for natural hair, which can help smooth and strengthen your damaged hair cuticles to lock in moisture. Convinced? Thought so. Ahead, the nine best protein treatments for natural hair.