Use a shampoo for dry frizzy hair then follow with a conditioner, preferably one of the ones without a lot of chemicals. If you're straightening your hair a lot it's probably fried the ends so a hot oil treatment would help. Pat your hair dry with a towel then use the blow dryer on medium … Read more
If you are straightening it you are using heat. My guess is you are blow drying as well, which is more heat. Look for a heat protectant that you put in after towel drying. It will seal and protect your hair.
Also do not rub your hair with a towel when drying. Work the towel … Read more