At full heat output, the Dyson Supersonic Nural can reach approximately 150 °C (302 °F) at the nozzle exit. However, its scalp sensor reduces this when the dryer is held close to the scalp. Cosmetic chemists formulating heat-protectant sprays should validate claims up to at least 230 °C to cover use alongside irons and other styling tools used in conjunction with the dryer.
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