Is ';Lets Jam'; a good hair product for black women?

I was reading a magazine and I seen a girl with really straight hair. I have natural hair and I straighten my hair with the flat iron. They have a heat styling line of products and I want to know if it is a good line of products. I'm looking for some good products for black hair that I can use for the school year. Can you help me out here plzz???Is ';Lets Jam'; a good hair product for black women?
I've used the let's jam heat styles and think it's really good it kept my hair straight for a long time, but i'm relaxed so i don't know if it will work that well for you.