NOVELTY - A haircare product (P1) comprises pressure-resistant aerosol packaging containing device for foaming a composition (C1) of at least two separate liquid phases. (C1) comprises water; water-soluble liquid alcohol (B); at least one polymer (C); at least one hair-conditioning cationic surfactant (D); at least one foam-forming/foam-stabilizing surfactant (E); and at least one water-insoluble propellant (F) liquified under pressure in the packaging.    USE - For hair treatment to create volume and/or hold in a human hairstyle (claimed).    ADVANTAGE - The product has a phase separation between the liquefied propellant phase and the water containing active ingredient phase that is reversible after shaking and recognizable from outside because of the transparent packaging. The product enables the production of volume and styling products with very satisfactory volume and setting effects and also is produced with absolutely no or very small amount of salts and hydrophobic fats or oils.    DETAILED DESCRIPTION - Hair care product comprises transparent, pressure-resistant aerosol packaging containing a device for foaming a composition (C1) of at least two separate clear liquid phases. (C1) comprises water; water-soluble liquid alcohol (B) (at least 15 wt% without propellant); at least one polymer (C) selected from hair-conditioning, hair-setting or film-forming polymers; at least one hair-conditioning cationic surfactant (D); at least one foam-forming or foam-stabilizing surfactant (E) selected from nonionic surfactants, with an HLB value of at least 10 and zwitterionic surfactants; and at least one water-insoluble propellant (F) that is liquified under pressure conditions in the aerosol packaging.    An INDEPENDENT CLAIM is also included for hair treatment involving: creating a foam using P1; applying this foam either to freshly washed, damp, or dry hair and distributing throughout the hair; applying (C1) to the hair an leaving it in the hair or rinsing out with water after an action time and then producing the desired hairstyle.