1. Stop using heat on your hair

You should stop using heat on your hair because it will dry out your hair and will cause breakage. 

The reason why using heat products such as straighteners, blow dryers, curling irons cause damage is because it damages and weakens the shaft. 

2. Use a Heat Protect to Prevent damage

 Avoid damage by air drying your hair, and if you are using heat, always use a heat protectant before heat application. 

3. Cure  

 Unfortunately, there is no way to revert your hair back from heat damage since the structure of the strand has been changed. Since the hair is permanently altered the only way to get rid of heat damage is to cut it off. 

4. Remedy

You can use protein treatments to improve the look of the hair. A couple of my favourite protein treatments are Joico K-PAK Reconstructor and Aphogee Keratin 2 Minute Reconstructor. Try to use a protein treatment at least once a month to help strengthen your damaged strands.