[Orodreth]

Well don't chemically straighten your hair, just straighten it with straight iron though, and use products to protect your hair from the heat.

I have hair like yours aswell, and when i got my hair chem. straightened it didn't do too much damage to it, but i straightened it like 3 times after that UNPROFFESSIONALLY, and I also didn't keep good enough care of it, so I had to get it cut.