Hair-cutting head and hair-cutting device

A hair-cutting head for a hair-cutting device, comprising:

• a head housing accommodating at least one hair-cutting unit and a lighting module;
• a skin-contacting area via which the hair-cutting head is in contact with a user's skin during use of the hair-cutting head and having a central area and a lateral area that fully surrounds the central area;
• wherein:
• the lighting module comprises a first set of at least one light source each configured to emit first light having wavelengths predominantly in a range from 400-500 nm, and a second set of at least one light source configured to emit second light having wavelengths predominantly in a range above 500 nm;
• each light source of the first set is arranged to emit, during use of the hair-cutting head with the skin-contacting area in contact with the user's skin, the first light towards the user's skin only via the central area of the skin-contacting area;
• each light source of the second set is arranged to emit, during use of the hair-cutting head with the skin-contacting area in contact with the user's skin, the second light towards the user's skin only via the lateral area of the skin-contacting area.