NOVELTY - Antiperspirant composition comprises anhydrous liquid vehicle (L1) containing at least one antiperspirant active principle; at least one volatile linear 9-17C alkane or a mixture of volatile linear 9-17C alkanes; and at least one propellant.    USE - For the treatment of human perspiration and the human body odors, in particular axillary odors (claimed).    ADVANTAGE - The composition uses volatile linear 9-17C alkane which makes possible to slow down the rate of settling of the antiperspirant active principle; reduces the flow of sweat, reduces body odors; exhibits good dry feel; has good effectiveness and good cosmetic properties.    DETAILED DESCRIPTION - Antiperspirant composition comprises anhydrous liquid vehicle (L1) containing at least one antiperspirant active principle; at least one volatile linear 9-17C alkane or a mixture of volatile linear 9-17C alkanes; and at least one propellant; with the provision that the composition is different from the formulation (A) comprising (wt.%) isopropyl myristate (IPM) (10.8), dicaprylyl carbonate (Cetiol CC) (5), capric/caprylic triglycerides (and) Propylene Carbonate (and) Stearalkonium Hectorite (2), n-Undecane/n-tridecane mixture according to Example 1 or 2 of the document DE 10 2008 012 457 (2), aluminum chlorohydrate (Locron P) (3), Tridthyl Citrate (Hydagen CAT) (1), Fragrance (1.2), propane (75); formulation (B) comprising (wt.%) isopropyl myristate (IPM) (10.8), dicaprylyl carbonate (Cetiol CC) (5), dicaprylyl carbonate (and) Propylene Carbonate (and) Stearalkonium Hectorite (Cosmedia Gel CC) (2), n-Undecane/n-tridecane mixture according to Example 1 or 2 of the document DE 10 2008 012 457 (2), aluminum chlorohydrate (Locron P) (3), Tridthyl Citrate (Hydagen CAT) (1), Fragrance (1.2), propane (75); and formulation (C) comprising (wt.%) isopropyl myristate (IPM) (6.5), propylheptyl Carpylate (Cetiol Sensoft) (6.5), capric/caprylic triglycerides (and) Propylene Carbonate (and) Stearalkonium Hectorite (Cosmedia Gel CC) (2), n-Undecane/n-tridecane mixture according to Example 1 or 2 of the document DE 10 2008 012 457 (2), aluminum chlorohydrate (Locron P) (5), Fragrance (0.3), propane (77.7). INDEPENDENT CLAIMS are included for the following:    (1) aerosol device composed of a container comprising a composition composed, on the one hand, of an anhydrous liquid phase (or dispensable) (L1), and at least one propellant and of a device for dispensing the aerosol composition; provided that the composition formed by the dispensable and the propellant is different from the formulations A, B and C;    (2) use of at least one volatile linear 9-17C alkane or a mixture of volatile linear 9-17C alkanes in an anhydrous antiperspirant composition packaged in an aerosol as agent which makes it possible to slow down the rate of settling of the antiperspirant active principle.