Ok...this isn't actually a straightening hair serum....but from personal experience it did straighten my curly hair... Loreal's mythic oil.....i applied it in wet hair...and then just dried my hair with a normal hair dryer....didnt proper blow dry or anything. I have frizzy curly hair....and for some reason mythic oil works great! And of you apply Garnier's anti frizz conditioner.....seriously....the results are stunning! Straight smooth silky hair without any harsh chemicals....just combination of conditioner and mythic oil. I have super curly hair, so it left a slight wave....but still highly recommended...as it moisturizes and cares for your hair and straightens it at the same time.