Blowdryer

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Image:Modern day hairdryer.JPG

A blowdryer is electromechanical device designed to blow cool or hot air over wet or damp hair, in order to accelerate the evaporation of water particles and dry the hair. The usage of blowdryers also allows to better control the shape of the hair in the process of styling, by accelerating and controlling the formation of temporary hydrogen bonds inside the hair. These hydrogen bonds are very powerful (allowing for stronger hair shaping than even the sulfur bonds formed by permanent waving products), but are temporary and extremely vulnerable to humidity, so that they entirely disappear with a single washing of the hair.

Blowdryers were invented around the end of the 19th century, being dependent on heat generation and mechanical air flow in order to be effective. The handheld, household hair-dryer first appeared in 1920.

Hairstyles using blowdryers usually have volume and discipline, and can be further improved by the use of brushes during drying to add tension, and also the use of styling products.

Before the development of blowdrying, hairstyles tended to be stiff and lacking volume.de:Haartrockner es:Secador de pelo fa:سشوار nl:Haardroger no:Hårtørker ru:Фен (прибор) sv:Hårtork zh-yue:風筒