Dyson invested nearly US$73 million and four years in the development of its hair dryer. Photo: Dyson

UK vacuum brand Dyson unveils US$400 bladeless hair dryer

'Dyson Supersonic' is quieter and protects hair from heat damage

Topic |   CNBC

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Dyson invested nearly US$73 million and four years in the development of its hair dryer. Photo: Dyson
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