Contact GHD asap. That's how I knew something was off with my straightener. The first time it happened the same thing to me, I turned it off, removed from the plug and waited and tried to turn it on again but I still get the red light flashing on and off. I tried doing it for a few times but still had the same issue so I contacted GHD and they replaced my straightener but after a few months it happened again. It sucks because for the price we pay for these straighteners we expect quality but unfortunately it isn't the case with these products.
I purchased this ghd after a hairdresser friend used hers on my hair. I couldn't believe how well it worked so I purchased the same model. I have curly frizzy hair and this straightener actually makes my hair shiny and even holds my hair straight if my hair gets wet in the rain. I use a hair straightening treatment on my hair before I use the ghd as you should with any straightener and this keeps my hair from becoming brittle. I have lovely comments about my hair since using it. It feels very soft and is healthy. I can adjust the heat setting so it does not get too hot. It is very quick to heat up and beeps when it is ready unlike others I have tried .It is so simple and quick to use. Because it is the wider ghd I can do my hair in less than five minutes. I have long hair past my shoulders. Very happy with this one.
GHD Classic Styler, from the name itself, you can deduce that this simple yet versatile device was made to style and straighten. Armed with a rounded barrel and advanced ceramic heaters, you can curl, flip, tease, wave, and straighten any hair type and texture easily without damaging your hair’s external surface. The infra-red heat technology infused within the plates also releases more negative ions than other products so your hair’s natural oils and luster are retained despite repeated exposure to maximum heat.
BUYER BEWARE: I bought this from Amazon LLC, but the product would NOT register as authentic on ghd's site. I tried the hologram code and date code multiple times, but the site wouldn't verify the numbers. Also there was no country of manufacture listed on the unit, the box or the booklet. The styler looked great and was packaged well. Did the unit and stickers look authentic? Yes in every way. But the ghd site states: "fake ghd products are virtually impossible to spot." I called ghd, and a rep said sometimes legit numbers aren't accepted by the site (?!) - and told me that sometimes fake numbers go through. So in the end not sure what good the checker does. The rep did add that "Amazon is not an authorized dealer for ghd products." And the rep echoed what another reviewer said, "the only way to authenticate a styler not bought from us or an authorized dealer is to send it in to the warehouse." That's too much trouble for anyone. Is the one I bought legit? I just can't tell for sure. I'm not taking the risk. Returning it to Amazon.
GHD Classic Styler, from the name itself, you can deduce that this simple yet versatile device was made to style and straighten. Armed with a rounded barrel and advanced ceramic heaters, you can curl, flip, tease, wave, and straighten any hair type and texture easily without damaging your hair’s external surface. The infra-red heat technology infused within the plates also releases more negative ions than other products so your hair’s natural oils and luster are retained despite repeated exposure to maximum heat. 
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