How do you get rid of frizzy hair and split ends?

I have a lot of hair, and its really curly too. But it's always frizzy, and I don't know how to get rid of the frizz. I try different shampoos but nothing seems to work. Also I have really bad split ends. Sometimes I straighten my hair so maybe that's it, but even right after I get a haircut the next day they're... show more I have a lot of hair, and its really curly too. But it's always frizzy, and I don't know how to get rid of the frizz. I try different shampoos but nothing seems to work. Also I have really bad split ends. Sometimes I straighten my hair so maybe that's it, but even right after I get a haircut the next day they're back. I really want to get my hair healthy before school starts on September 7th.

Will someone please help me? Thanks.
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