What is the best heat protection spray product for use on the hair?

I'm starting to straighten my hair every day, but I know you need a heat protection spray. What product would you recommend. Even if you could tell me where the product would also great. Thanks in advance. 🙂

CHI Iron Guard 44 is incredible! I love and use it daily. You can get the most hair salons in the mall:)

How to curl hair with BaByliss wand