How to get my hair pin striaght?

I have incrediably curly hair and its super thick. Its not corse like african american hair but its curly and frizzy just like that except my curls arent as tight. It takes me around 30-45 minutes to straighten my hair and i hate it! I just wanna know some good ideas to make my hair less frizzy without products like home remadies.I also have to chi and it straightens my hair but my hair curls through out the day how can i stop this?