NOVELTY - An aerosol spray unit (10) comprises: a) an aerosol dispensing unit (12) located at the top of the spray unit containing hair root concealer composition including butane and propane as propellants; b) a spray nozzle (14) is connected to the spray unit for spraying the hair root concealer composition onto the hair roots; and c) a short inserting tube (16) is connected to the spray nozzle with the inserting tube for extending between the hair roots to apply the concealer directly onto the hair roots.    USE - An aerosol spray unit for applying hair root concealer directly onto the hair roots (claimed).    ADVANTAGE - The aerosol spray unit easily and cleanly sprays the hair root concealer through the inserting tube directly onto the hair roots. The inserting tube extends into the hair roots to dispense the hair root concealer. The spray unit allows applying of a hair root concealer composition directly onto the hair roots. The inserting tube of the spray unit has a length of one quarter inch to 4 inches, and internal diameter of 1-3 ml in order to extend between the hair roots to directly apply the concealer onto the base of the hair roots. The spray unit enables the user to accurately apply and spread the hair dye on selectively sectioned strands or tresses.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) spraying hair root concealer directly onto the hair roots involving: a1) using an aerosol spray unit having a spray nozzle and inserting tube; b1) placing the inserting tube into the hair so the end of the inserting tube is between the hair roots; c1) actuating the spray unit for spraying hair root concealer through the inserting tube directly onto the hair roots; d1) moving the inserting tube to another position between the hair roots of the user; and e1) again actuating the spray unit for spraying hair root concealer through the inserting tube directly onto the hair roots; and    (2) a hair root concealer for applying to the hair roots using an aerosol spray unit, comprising a composition including butane, propane, ethyl trisiloxane, trimethylsiloxysilicate, methyl trimethicone, titanium dioxide, iron oxide, mica, and hydrofluorocarbon 152A.    DESCRIPTION OF DRAWING(S) - The figure shows a perspective view of the details of the spray unit, nozzle and inserting tube, showing the aerosol unit applying the hair root concealer to the hair roots.    Aerosol spray unit (10)    Aerosol dispensing unit (12)    Spray nozzle (14)    Tube (15)    Inserting tube (16)