To provide an applying device with comb teeth capable of applying a suitable amount of a hair tonic over the hair according to various hair styles, amounts of hair, parts of application without staining hands nor a scalp.

This hair tonic applying device comprises an injection container 10 containing a fluid hair tonic M with a injection means and a comb part 1 connected to the container 10. The comb part 1 comprises a fixed comb body 4 connected to the injection container 10 and an attachment comb body 6 attached to the fixed comb body 4 so as to be freely detachable. The fixed comb body 4 is provided with a comb shaft part 2 connected to the injection container 10 at a base 8, fixed comb teeth 3 protrudingly provided along the end part of the comb shaft part 2, and a conduit 7 with one end communicated to the injection hole 13 of the injection container and the other opened around the fixed comb teeth 3. The attachment comb body 6 is provided with comb teeth 5 arranged around the fixed comb teeth 3.