理美容はさみによる切断が毛髪に与える影響について

抄録

Healthy hair catches a lot of people's attention. Because of this, the effects of some properties of scissors on hair are determined. First, hair sections cut by different methods are compared. The hair sections cut by hair-cutting and stationary scissors are prepared. These hair sections are heated by a hair drier in a manner similar to daily hair care. The hair section cut by stationary scissors is dried for a longer time than that cut by hair-cutting scissors, because of its rougher surface. This indicates that a hair section with a rough surface can not maintain moisture. From this result, it is possible to evaluate the cut hair section in terms of the rough surface area ratio. Several scissors with different properties are used for such an evaluation. The rough surface area ratios of the hair sections cut by these scissors are measured. The results indicate that the most important property of scissors is the edge radius. To examine the effect of this property on live hair, hair sections are obtained from four persons using the scissors with a large edge radius. Two months later, 40% of one hair section was damaged.