A preparation of cosmetic, pharmaceutical and / or household products, comprising a mixture comprising or consisting of a) an antimicrobial active amount of 1,2-decanediol of formula 1: ** Formula ** and b) an active antimicrobial amount of one or more compounds selected from the group consisting of ethanol, propan-1-ol, propan-2-ol, chlorhexidine digluconate, chloroxylenol, triclosan, triclocarban, benzethonium chloride, methylbenzethonium chloride and benzalkonium chloride, where the preparation further comprises or consists of c) an active antimicrobial amount of one or more compounds selected from the group consisting of mecetroniomethyl sulfate, undecyleneamidopropyltrimonium metasulfate, (ethylenedioxy) dimetanol, benzylalkyl-C12-18-dimethylammonium chloride, didecyldimethylammonium chloride, N, N-didecyl-N-methyl-poly (oxyethyl) ammonium propionate, N- (3- aminopropyl) -N-dodecylpropan-1,3-diamine, N-dodecylpropan-1,3-diamine, N- (3 -aminopropyl) -N-dodecylprop an-1,3-diamine, chlorophen, 2-biphenyl-2-ol, chlorocresol, hydrogen peroxide, acetic acid, peracetic acid, glutaral and formaldehyde, wherein the total amount of 1,2-decanediol of formula 1 in the Preparation is in the range of 0.1 to 2% by weight based on the weight of the preparation.Una preparación de productos cosméticos, farmacéuticos y/o del hogar, que comprende una mezcla que comprende o que consiste en a) una cantidad activa antimicrobiana de 1,2-decanodiol de fórmula 1:**Fórmula** y b) una cantidad activa antimicrobiana de uno o más compuestos seleccionados del grupo que consiste en etanol, propan-1-ol, propan-2-ol, digluconato de clorhexidina, cloroxilenol, triclosán, triclocarbán, cloruro de bencetonio, cloruro de metilbencetonio y cloruro de benzalconio, en donde la preparación además comprende o consiste en c) una cantidad activa antimicrobiana de uno o más compuestos seleccionados del grupo que consiste en sulfato de mecetroniometilo, metasulfato de undecileneamidopropiltrimonio, (etilend
