To use a hot brush, simply allow the hot plate to reach the desired temperature and stroke the brush through your dry hair. It heats up to 185C, a temperature which ghd claims is optimal for long-lasting styles without heat damage.

SUPER IONIC TECHNOLOGY The BaByliss Diamond Heated Smoothing Brush features an advanced ionic system which releases super frizz-controlling conditioners to smooth the cuticle, eliminate static and boost shine. We used the tool to both straighten and curl our hair, and found that it performed particularly well at taming flyaways and creating a glossy finish. It’s a quick and easy option for hair-wash day – it only took around ten minutes to transform our bushy, wet hair into a dry, straight look.

At Expert Reviews, we know that only hands-on testing delivers the most complete information about a product. This simple-to-use hot paddle brush works best on large sections of hair, and with its combination of shorter and longer bristles it will certainly cut down your styling time compared to straightening irons – especially if you have long or thick hair. The slightly curved design of the brush head helps keep hair smooth by following the natural curve of hair. Heat styling can already be damaging to the hair, so by reducing the potential for pulling and catching, you’re helping to further prevent breakage. Ashley Jimenez and Melanie Rud both have extensive experience writing about and testing beauty products.

The Diamond straightening brush fins with flexible taming bristles provide gentle tension on the hair, leaving it shiny and smooth.This styling tool is designed to be used on dry hair, like you would with straighteners or a curling wand.

The firm, tooth-like bristles look a little unusual at a first glance, but the design helps to ensure even heating all the way across the surface of the brush. It has three heat settings – we preferred the hottest setting for the best hold – and the LED light at the base of the wand helpfully indicates the battery life. If you’ve never quite achieved a super-straight blow-dry at home, a straightening brush can be a quick and easy way to add sleek polish to your hair. The size of the brush also means it’s a great option for those with long or thick hair that can be difficult to deal with. Designed with a four-cell lithium-ion battery, the corrale gives you up to 30 minutes of cord-free styling, which was plenty of time for us to smooth over our locks, which were left looking shinier and noticeably less frizzy.This brush is shaped like an oval, with bristles of varying lengths which allow you to grip hair right at the root for a quick burst of volume. The brush can be used on wet or dry hair: there are two heat settings and two levels of airflow, so you use the brush with air to dry and style wet hair, or without air to straighten and style dry hair. Because "the temperatures are hitting your hair in a different way than traditional methods, such as blow dryers or flat irons. We tried these brushes over a couple of weeks on long, thick hair that’s prone to unruliness and waves. The battery lasts for around 30 minutes and we managed to straighten our hair in just 7 minutes, meaning it should last a few styling sessions before your need to recharge.