I literally just used this protection mist on my hair before I straightened it and I can still smell how fantastic it is. I have always read good reviews for this product and I too give it a thumbs up :) It is called Flat Iron Protection Mist but it can be used before applying any heat to your hair. Also you do not need to repurchase this regularly. I have waist length and pretty thick hair and I've only used about 10cm out of my bottle and I have had it for four months. The one tip I would give to people using this is to not apply too much (you don't need a lot for it to do a fantastic job anyway) and also if you use it and straighten your hair and then restraighten it a few days later without washing it do not use the spray again as your hair will get oily and sticky.