Help with dry hair

use moisture intense shampoo and conditioner then I would dry got 2B protector serum, plus get your hair dusted (dead ends trimmed) that should help you can also try deep conditioning treatments (ion) that you leave on for a few minutes once or twice a week

I used to have kinky Puerto Rican frizzy hair, and I live in Vegas, so it kinda looked like a helmet.

Try Sallys Beauty Supply Store. It is the Mecca of Wonderful Hair. I have a friend that helped me get my tangled mess controlled, and now its straight and silky.

Stop straightening your hair. Trim regularly. Use deep-nourishing conditioner.

Try a deep, leave in conditioner for your hair. Use a shampoo with a rich emollient that will clean and soften your hair. Look for products like Revlon’s Milk Plus 6 for Dry Hair or Nexxus’s Assure that have protein and balsam. Ingredients like ammonium salts can make your hair soft and manageable. Look for Tame or Ivory Conditioner. For styling products, look for alcohol-free ones. Clairol’s Condition Styling Gel, Revlon’s Flex Body Building Mousse are two options. After you’ve washed, conditioned, added styling product, and dried your hair, rub a little facial moisturizer onto your palms and run them through your hair. Then brush your hair to distribute the moisturizer.

Protect your hair from the sun at all times, wear a hat whenever you go out, keep your hair moist to allow the hair moisture to stay in, hence, preventing dry hair. Use baby oil to protect your hair from any water chlorine and the sun.

You could use avocado, it might get messy, but afterwards, it gives your hair a really deep condioning and leaves it really shiny. You could do it like 2 x a week. Until your hair repairs itself, and then I would do what Deeplove said, to maintain your hair healthy.
Or you could buy special products, Thase are 2 I've used that have helped alot
Kolestral, you could get this at a Buety supply.
Jafra Dynamics Spa Conditioner, the internet.
Oh and try not washing your hair evreyday, so it could get it's natural oils.
Good luck!

yea. you can add a little hair grease to your hair or oil sheen before applying heat. The reason y ur hair is getting so dry is because you are probably applying too much heat to your hair which can dry out all its moist inside. try wraping your hair at night and wear a hair cap to keep it nice and protected then when you let it out and down it should be straight enough to where you don't have to put heat to it. just comb and brush it. You can press it out sometimes but for now focus on greasing it every other day not everyday and wraping it at night by brushing your hair around your head going one direction in a circle. Hope this works for you.