Liquid, thickened chlorine bleaching composition

Liquid, thickened chlorine bleaching composition having a pH of 10-12.5 and a viscosity of about 10 to 150 cS at a temperature of 25.degree. C., comprising an aqueous, hypochlorite-ion yielding solution in an amount such that the composition has an active chlorine content of 1-10% by weight, said composition containing as thickening agent 0.5-5% by weight of a mixture of (1) a hypochlorite-soluble first detergent active compound selected from the group consisting of a tertiary amine oxide having one branched or straight C.sub.8-18 alkyl chain and two short chain alkyl groups, C.sub.8-18 alkyl-substituted betaines, quaternary ammonium compounds and mixtures thereof, and (2) a second detergent active compound selected from the group consisting of an alkali metal salt of a fully saturated C.sub.8-18 fatty acid, an alkali metal acylsarcosinate, an alkali metal alkyltauride, a sugar ester, an alkali metal C.sub.10-18 alkylether sulphate containing 1-10 moles of ethylene oxide and/or propylene oxide and mixtures thereof, the weight ratio of the hypochlorite-soluble first detergent active compound to the second detergent active compound being from 75:25 to 40:60, the composition further comprising from 50-350 m mol/kg of a buffer salt selected from the group consisting of alkali metal salts of orthophosphoric acids, alkali metal salts of silicic acids, alkali metal salts of carbonic acids and mixtures thereof.