Does the Dyson Airstrait damage hair?

How the Airstrait straightens

The Airstrait has two arms like a straightener, but instead of heated plates, each arm blows a jet of heated air downwards through the hair. An integrated comb adds tension. In Wet mode, you glide it down towel dried hair and it dries and straightens at the same time. In Dry mode, you use it on dry hair for touch-ups.

Because hair is shaped while it dries under tension, the Airstrait works in a similar way to a blow-dry with a brush, rather than by pressing hair flat at high temperature.

Heat control and Dyson's claims

According to the Amazon UK listing, glass bead thermistors measure the airflow temperature up to 500 times a second to keep heat under control, and the airflow is projected at a 45 degree angle for tension. Dyson describes no hot plates and no heat damage, and says the tool is engineered around hair health.

Those are manufacturer claims based on Dyson's own testing conditions. What is widely accepted is that heated air at controlled temperatures is generally gentler than direct contact with hot plates, because the hair surface does not reach the same peak temperature. It does not mean heat has no effect at all: hair can still dry out with frequent, long sessions on high settings.

Note:The Airstrait is a mains powered hot air tool. Keep vents clear, clean the filter as the manual describes and never use it near a bath, shower or basin of water.

Airstrait vs plate straighteners

Plate straighteners, including Dyson's Corrale, press hair between surfaces at around 165 °C to 230 °C depending on the model and setting. Done well, at sensible temperatures with protection, that is fine for most hair, but it carries more risk of overheating sections than air styling. The Corrale's flexing plates aim to need less heat than rigid plates, a different approach to the same goal.

The trade-off is the finish. Plates give the flattest, glossiest straight hair. The Airstrait gives straight hair with more movement. Our Dyson Airstrait vs Corrale comparison covers this in detail.

Using the Airstrait gently

Choose the lowest heat setting that gives the result you want. Towel dry hair well so you need fewer passes, use a heat protectant made for damp hair and work in sections small enough to dry in one or two passes. Clean the filter regularly so airflow stays strong, which shortens styling time.

If your hair is very fine or bleached, start with lower heat and see how it responds. Our explainer on whether straighteners damage hair gives general guidance that applies to air tools too, and do you need heat protection spray covers protectants.

• Lowest effective heat setting.
• Towel dry well before Wet mode.
• Sections small enough for one or two passes.
• Clean filter for strong airflow.
• Heat protectant suited to damp hair.

Is it right for you?

If you straighten from wet most days and want to avoid hot plates, the Airstrait is a sensible option. If you want a flat, glassy finish, plates may still suit you better. Our is the Dyson Airstrait worth it explainer looks at value, and the best wet-to-dry straighteners guide compares it with the ghd Duet Style and Shark alternatives.

See the best wet-to-dry straighteners →

Frequently asked questions

Does the Dyson Corrale damage hair? It uses heated plates, so it carries the usual plate risks, though Dyson designed its flexing plates to need less heat. Use a moderate setting and protection.

How hot does the Dyson Airstrait get? It uses heated air with several heat settings. Check the manual for the exact temperatures of your model.

Is the Airstrait good for damaged hair? Air styling is generally gentler than plates, which suits fragile hair, but use low heat and keep sessions short.

Do I still need heat protection with the Airstrait? It is a good habit with any heat tool, including air stylers.