Device for continuously dispensing a hair dyeing product on human hair

摘要

PCT No. PCT/EP89/00263 Sec. 371 Date Sep. 20, 1990 Sec. 102(e) Date Sep. 20, 1990 PCT Filed Mar. 13, 1989 PCT Pub. No. WO89/08999 PCT Pub. Date Oct. 5, 1989.An improved device for continuous application of a hair dye to a person's hair, without wetting the scalp, incorporates a hair dye reservoir consisting of a first porous material within a housing and teeth made of a second porous material, inserted into the first porous material and in capillary connection with it. The teeth in the surface area of their free ends are free from open pores, and the main pore direction of both the second porous material of the teeth and the first porous material of the reservoir is essentially parallel in the same direction as the longitudinal direction of the teeth. The first porous material of the reservoir extends over several times the penetration depth of the teeth in the penetration direction, and the pore size in the teeth is smaller than in the remainder of the reservoir.