Straw like hair

Is there anything I can use in the shower to relax and moisturize it?

After I had my daughter my hair turned to crap, like straw, dry, I can’t run my fingers through it.

I don’t have much time to shower cause the baby. Nonetheless, time to straighten it anymore.

What can I do that’s quick in the shower?

I tried coconut oil. It helped a bit.

Any other ideas?

Thank you