ghd is usually known for their flat irons; which is what probably damaging your hair in the first place haha! But now, they got you covered with their thermal hair protecting spray! I use this product religiously when I flat-iron my hair. I have a love and hate relationship with my curly hair therefore, I have been straightening my hair since the 6th grade! THAT IS A LOT OF DAMAGE! I also refuse to cut my hair short so this product is a life saver. It lessens the visibility of my split ends and prevents severe heat damage. A bottle will cost you around $ 2o.oo. There are also 3 different kinds, I use the one for weak and damaged hair.
How to use it: Just spray it onto damp/dry hair before styling. I prefer on damp hair!
Where to buy: I buy mine from Sephora, but I think you can buy it online as well.