The Straightener Selection Guide: Matching ghd Models to Your Hair Density for Damage-Free Results

Fine hair typically has fewer strands per square centimetre and smaller diameter, making it prone to flattening under heavy plates. Thicker hair, by contrast, resists heat and requires sustained higher temperatures to reshape the cuticle. Testing your own density with a simple strand count in a small section helps avoid the common error of over-processing lighter hair.

UK consumers often overlook this step when browsing at best hair straightener comparisons, leading to returns or damaged hair within weeks. Density also influences how styling products interact post-straightening, with finer hair absorbing oils faster.

The ghd Original Hair Straightener offers 185°C with 2.7cm plates suited to medium density. Its upgraded version maintains consistent heat without the spikes that damage finer strands. For thicker hair, the ghd Gold and ghd Max models provide wider 3.7cm plates and faster heat-up, reducing pass time and cumulative heat exposure.

How often should I straighten fine hair? Limit to two or three times weekly and always apply a protective oil such as Moroccanoil Treatment Light Hair Oil first.

Can thick hair use the original ghd model? It will work but requires more passes, increasing cumulative heat damage; wider-plate models are more efficient.

Does plate width affect curl retention after straightening? Wider plates create flatter results that hold better in humidity, while narrower ones allow slight movement.

What temperature suits colour-treated hair? Stay at or below 185°C regardless of density to protect the cuticle and prevent colour fade.

Should I use dry shampoo before straightening? Only the lightest mist of Batiste Dry Shampoo Original on roots; heavier layers can create residue under heat.