The purpose of the present invention is to provide a hair restoration/growth stimulating device that stably provides sufficient hair restoration/growth stimulating effects without using ultra-narrow band light. Provided is a hair restoration/growth stimulating device 1 provided with a casing 2 to be worn on the head of a user and a plurality of light emitting diodes 3 that are attached inside the casing 2 and emit light having a peak wavelength band of 630-660 nm and a full width at half maximum of 15-20 nm. The hair restoration/growth stimulating device is configured to directly irradiate the user's head with light emitted from the light emitting diodes 3.本發明為了要提供：不必使用超窄頻寬的光，即可穩定地獲得充分的育毛暨生髮促進效果之育毛暨生髮促進裝置，乃提供一種育毛暨生髮促進裝置(1)，其係具備：裝設在使用者的頭部的殼體(2)；被安裝在殼體(2)的內部之可射出峰值波長頻寬為630nm以上且660nm以下，波長半值寬度為15nm以上且20nm以下的光之複數個發光二極體(3)；並且被製作成可將來自複數個發光二極體(3)的射出光直接照射使用者的頭部。
