When using a brush straightener, you should keep several things in mind. First, always apply some kind of a thermal protectant. Comb your locks properly. Second, be aware of the hot bristles – you don’t want them to touch your scalp. Third, don’t hold a brush straightener as a regular brush however tempting and easy this seems. You should hold it kind of upside down so that bristles won’t touch your skin. To straighten a strand in one pass, hold the brush tight to the surface of the hair. More detailed guide on how to use a hair straightening brush you can find in this article.
I read lots of different reviews about these straighteners and a lot said these aren't genuine. They are definitely ghds just professional ones which means they are lighter. They are exactly the same ones at my hair dressers. I'm happy.