How to straighten hair?

[TrueAdamNotTrueAdam]

I have very wavy/curly hair but it's very thick that it almost looks like an afro some days. I have tried oiling it using leave in conditioners but they both don't work or have very minimal effects. Is there a solution for this puffy appearance or is protein/keratine hair treatment the only way.

 

[valentine]

with a straightener

 

[valentine]

honestly over if you have curly hair

 

[TrueAdamNotTrueAdam]

with a straightener

Jfl it doesn't work for me it just makes it look fried

 

[swt]

Jfl it doesn't work for me it just makes it look fried

over

 

[TrueAdamNotTrueAdam]

honestly over if you have curly hair

My issue is more so that it's very thick to the point that it's just unmanageable my hair is actually 2c