Abstract
When hair is wet, the cuticles are open, therefore, it is easy to damage the hair through too much use of a regular hair-dryer. In this research, instead of the current type of heat-blow dryer, a new type of hair-dryer which uses a suction method was developed. The purpose of this new type of hair-dryer is to suck in and dry the hair, and also to make the hair curly or straight. The wet hair is pulled in together with heated air into the spiral space of the dryer, and hydrogen bonding re-combines the hair to become curly or straight. The special point is that it does not use a brush or comb-iron, so there is no damage to hair from frictional resistance. The drawn in air does the work instead of a brush or comb-iron, and sets the hair without frictional resistance. Curly or short hair, which is difficult to control by brush etc., can be set. Also, other advantages are that this dryer can be operated with just one hand, hair which falls out does not make a mess, and the face and scalp are not exposed to heated air.
