2nd ghd first one last almost 10 years love this product. Mine was real was able to register it without any issues.
If your hair is fine, fragile or damaged you have to be careful with the temperature. Your locks require the lower heat to reduce the damage. The maximum heat level that you can apply on thin or damaged hair is 350°F. But maybe you should start with lower temperature, something like 170°F – and see if this would work. Also, thin damaged hair requires a flat iron with narrow plates so that you will be able to straighten it in one pass.
Was worried following some negative reviews about this not being a genuine ghd product. However product arrived with ghd tag with details on how to register with ghd. This was done on the official ghd website and ghd have verified the product.