Abstract: In a method of washing with a flexible absorber impregnated with a small amount of water and a detergent solution, there is provided a liquid detergent composition exhibiting a high detergent effect and durability of the effect. Disclosed is a liquid detergent composition for use in direct impregnation of specific amounts of a flexible absorber, which comprises a surfactant, a hydrotropic agent and a water-soluble organic solvent and water, has a viscosity of 300 to 1000 mPa·s at 20° C., and has the maximum viscosity when diluted with water within the concentration range of 10 to 60% by weight.

Abstract: The present invention relates to a 2-hydroxypropanediamine derivative represented by the following general formula (1): ##STR1## wherein R.sup.1 and R.sup.2 mean individually a linear or branched C.sub.6 -C.sub.36 alkyl or alkenyl group, X denotes a C.sub.1 -C.sub.6 alkylene or alkenylene group which may be substituted by at least one hydroxyl, sulfonic or carboxyl group and has 1-6 carbon atoms, y.sup.1 is a sulfonic group, a sulfuric acid residue or a carboxyl group, y.sup.2 means a hydroxyl group, a sulfuric acid residue or ##STR2## and n stands for 0 or 1, or a salt or quaternized product thereof, and a detergent composition containing such a compound. This compound is low in irritativeness to the skin and hair and excellent in foamability, and can give a pleasant feeling to the user's skin and the like.