Abstract: New alkyl-hydroxypropyl-chitosans of the formula IHO[C.sub.6 H.sub.11-m-q NO.sub.4 (R.sup.1).sub.m (R.sup.2).sub.n (R.sup.3).sub.q ].sub.p H (I)(m=0-0.6; n=0.5-10; q=0.5-4; p=50-5000; R.sup.1 =acetyl; ##STR1## R.sup.3 =C.sub.1 -C.sub.6 -alkyl) and their salts with organic or inorganic acids. The invention is directed, in addition, to a process for producing the chitosan derivatives of the formula I, as well as cosmetic compositions for the treatment of hair or skin, particularly compositions for strengthening hair, comprising a content of these chitosan derivatives. The described alkyl-hydroxypropyl-chitosans are distinguished by their favorable solubility in organic solvents. Therefore, they can also be used, for example, in anhydrous hairsprays.

Abstract: Apparatus for the metered removal of a pasty or fluid substance and including a storage container for the pasty or fluid substance and having an interior with a constant internal cross section, an upper end with an outlet nozzle, and a body having an opened lower end, a plunger disposed in the body of the storage container and being upwardly displaceable to exert a feed pressure on the interior of the storage container, and a piston rod for actuating the plunger and having a support foot projecting from below into the storage container and bearing removably on the plunger.