How to have naturally pretty hair?

I underwent a hair treatment (relax) to have my hair straightened a year ago. I've been doing this treatment every year for the past four years. And now I've noticed that after a year or less than, my hair becomes really dry and fuzzy already. I'm tired of doing the same routine now because I know it harms my hair. I'm thinking of getting a cellophane but I wonder, would my hair look straighter? There's this certain part of my hair that just curls and look awkward and out of place.