Detergent, in particular liquid detergent, comprising, in each case based on the total weight of the detergent - in a total amount of 0.001 to 10.0% by weight, preferably 0.01 to 3.0% by weight, of at least one catechol metal complex compound represented by formula where R 1 and R 2 independently of one another represent a hydrocarbon radical having 1 to 20 carbon atoms which is optionally substituted by at least one radical selected from hydroxyl, (C 1 -C 4)-alkoxy, (C 1 -C 4)-alkoxy(CH 2 CH 2 O) n -,-NR'R" or -N + R'R"R′′′ X -, where n = 1 to 10, R', R" and R′′′ independently of one another represent H or a linear or branched aliphatic hydrocarbon radical having 1 to 3, preferably 1 to 2 carbon atoms, and X - represents an anion, Z 1 and Z 2 independently stand for OH or O -, M stands for a metal cation of a transition metal or lanthanide, (in particular for a metal cation of Ti, Zr, Hf, V, Nb, Ta, Cr. Mo, W, Mn, Fe, Ru, Co, Ni, Cu, Zn, Ce or Sm), Q as the charge number of the metal cation M represents a number 2, 3 or 4, p as the charge number of the catechol ligand represents a number 0, 1 or 2, r stands for a number 1, 2, 3 or 4, and - at least one surfactant, preferably in a total amount of from 2 to 70% by weight, in particular from 10 to 65% by weight, more preferably from 15 to 60% by weight. - in a total amount of 0.001 to 10.0% by weight, preferably 0.01 to 3.0% by weight, of at least one catechol metal complex compound represented by formula where R 1 and R 2 independently of one another represent a hydrocarbon radical having 1 to 20 carbon atoms which is optionally substituted by at least one radical selected from hydroxyl, (C 1 -C 4)-alkoxy, (C 1 -C 4)-alkoxy(CH 2 CH 2 O) n -,-NR'R" or -N + R'R"R′′′ X -, where n = 1 to 10, R', R" and R′′′ independently of one another represent H or a linear or branched aliphatic hydrocarbon radical having 1 to 3, preferably 1 to 2 carbon atoms, and X - represents an anion, Z 1 and Z 2 independently stand for OH or O -, M stands for a metal cation of a transition metal or lanthanide, (in particular for a metal cation of Ti, Zr, Hf, V, Nb, Ta, Cr. Mo, W, Mn, Fe, Ru, Co, Ni, Cu, Zn, Ce or Sm), Q as the charge number of the metal cation M represents a number 2, 3 or 4, p as the charge number of the catechol ligand represents a number 0, 1 or 2, r stands for a number 1, 2, 3 or 4, and R 1 and R 2 independently of one another represent a hydrocarbon radical having 1 to 20 carbon atoms which is optionally substituted by at least one radical selected from hydroxyl, (C 1 -C 4)-alkoxy, (C 1 -C 4)-alkoxy(CH 2 CH 2 O) n -,-NR'R" or -N + R'R"R′′′ X -, where n = 1 to 10, R', R" and R′′′ independently of one another represent H or a linear or branched aliphatic hydrocarbon radical having 1 to 3, preferably 1 to 2 carbon atoms, and X - represents an anion, Z 1 and Z 2 independently stand for OH or O -, M stands for a metal cation of a transition metal or lanthanide, (in particular for a metal cation of Ti, Zr, Hf, V, Nb, Ta, Cr. Mo, W, Mn, Fe, Ru, Co, Ni, Cu, Zn, Ce or Sm), Q as the charge number of the metal cation M represents a number 2, 3 or 4, p as the charge number of the catechol ligand represents a number 0, 1 or 2, r stands for a number 1, 2, 3 or 4, - at least one surfactant, preferably in a total amount of from 2 to 70% by weight, in particular from 10 to 65% by weight, more preferably from 15 to 60% by weight.