My hair is naturally curly down to bra strap when straightened just above when curly
I never ever wear it curly I hate curls on myself! So I always straighten it or tie hair up straight
My hair is naturally blonde never dyed it until 3 weeks ago where I got it dyed brown with blonde highlights through it didn't like it so got brown all over!
Now my hair feels in good condition nice and soft but the front is breaking off! Like really badly 
I've decided that for next 3 weeks I'm not putting any heat near it but will have to tie it up in a messy top knot bun cause I can't tame these curls!
So what I want to know is
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what can I put on my hair to stop breaking?
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will tying it up cause breakage?
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when I go back to using heat what can I do to stop it breaking?
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I wish I'd never dyed it now can I go back to normal and will bleach have to be used?