Biotin for hair growth/strength

Has anyone actually tried this? What brand of supplements did you use? I've given up on just about everything. I constantly try to help my hair with mask treatments and haircuts every 6 weeks (just enough to get the nasty ends off) and just about nothing works. My hair is always matted and nasty in the morning and I think it's because I bleached it awhile ago (which was stupid) and it's still recovering. If nothing else works, I'm going for extensions. Lol.