A laundry care composition comprising from 0.00001 wt% to 0.5 wt% mono-azo carboxylate dye having the structure of Formula I: wherein each R 3 is independently selected from the group consisting of alkyl, oxyalkyl, oxyaryl, sulfonamidoalkyl, sulfonamidoaryl, amidoalkyl, amidodialkyl, amidoaryl, amidodiaryl, halogen, thioalkyl and thioaryl; wherein the index a is an integer from 0 to 4, preferably from 0 to 2; wherein D is an aromatic or heteroaromatic group, with the proviso that the heteroaromatic group is not a thiophene; wherein R 1 is independently selected from the group consisting of: (a) unsubstituted or substituted C 1 to C 12 alkyl chains, optionally the alkyl chains comprise ether (C-O-C), ester and/or amide links, optionally the alkyl chains are substituted with -Cl, -Br, -CN, -NO 2, -SO 2 CH 3, -OH and mixtures thereof; and (b) (CH 2 CH 2 O) y ((CH 2) w NH) z Q; wherein R 2 is (CH 2 CH 2 O) y' ((CH 2) w' NH) z' Q'; wherein y and y' are independently selected integers from 0 to 39; wherein the sum of y + y' is in the range of from 3 to 35, preferably from 3 to 30, preferably from 3 to 20, preferably from 3 to 10, preferably from 3 to 5; wherein w and w' are independently selected integers from 2 and 3; wherein z and z' are independently selected integers from 0 and 1; wherein z is 1 when y is 0; and wherein z' is 1 when y' is 0; wherein Q and Q' are independently selected from the group consisting of H and Y; wherein at least one Q or Q' group is Y, preferably both Q and Q' are Y; wherein Y is an organic radical represented by Formula II wherein independently for each Y group: M is H or a charge balancing cation; m is 0 to 5, preferably 0, 1, 2 or 3, more preferably 0 or 1; n is 0 to 5, preferably 0, 1, 2 or 3, more preferably 0 or 1; and the sum of m + n is in the range of from 1 to 10, preferably 1, 2 or 3, more preferably 1 or 2; each R 4 is independently selected from the group consisting of H, C 3-18 or C 4 -C 18 linear or branched alkyl, C 3-18 or C 4 -C 18 linear or branched alkenyl, and mixtures thereof; and wherein at least one R 4 group is not H; and preferably wherein the sum of carbon atoms in all the R 4 groups is in the range of from 0.4(y + y') to 3.0(y + y'), preferably from 0.6(y + y') to 1.6(y + y'). wherein each R 3 is independently selected from the group consisting of alkyl, oxyalkyl, oxyaryl, sulfonamidoalkyl, sulfonamidoaryl, amidoalkyl, amidodialkyl, amidoaryl, amidodiaryl, halogen, thioalkyl and thioaryl; wherein the index a is an integer from 0 to 4, preferably from 0 to 2; wherein D is an aromatic or heteroaromatic group, with the proviso that the heteroaromatic group is not a thiophene; wherein R 1 is independently selected from the group consisting of: (a) unsubstituted or substituted C 1 to C 12 alkyl chains, optionally the alkyl chains comprise ether (C-O-C), ester and/or amide links, optionally the alkyl chains are substituted with -Cl, -Br, -CN, -NO 2, -SO 2 CH 3, -OH and mixtures thereof; and (b) (CH 2 CH 2 O) y ((CH 2) w NH) z Q; (a) unsubstituted or substituted C 1 to C 12 alkyl chains, optionally the alkyl chains comprise ether (C-O-C), ester and/or amide links, optionally the alkyl chains are substituted with -Cl, -Br, -CN, -NO 2, -SO 2 CH 3, -OH and mixtures thereof; and (b) (CH 2 CH 2 O) y ((CH 2) w NH) z Q; wherein R 2 is (CH 2 CH 2 O) y' ((CH 2) w' NH) z' Q'; wherein y and y' are independently selected integers from 0 to 39; wherein the sum of y + y' is in the range of from 3 to 35, preferably from 3 to 30, preferably from 3 to 20, preferably from 3 to 10, preferably from 3 to 5; wherein w and w' are independently selected integers from 2 and 3; wherein z and z' are independently selected integers from 0 and 1; wherein z is 1 when y is 0; and wherein z' is 1 when y' is 0; wherein Q and Q' are independently selected from the group consisting of H and Y; wherein at least one Q or Q' group is Y, preferably both Q and Q' are Y; wherein Y is an organic radical represented by Formula II wherein independently for each Y group: M is H or a charge balancing cation; m is 0 to 5, preferably 0, 1, 2 or 3, more preferably 0 or 1; n is 0 to 5, preferably 0, 1, 2 or 3, more preferably 0 or 1; and the sum of m + n is in the range of from 1 to 10, preferably 1, 2 or 3, more preferably 1 or 2; each R 4 is independently selected from the group consisting of H, C 3-18 or C 4 -C 18 linear or branched alkyl, C 3-18 or C 4 -C 18 linear or branched alkenyl, and mixtures thereof; and wherein at least one R 4 group is not H; and preferably wherein the sum of carbon atoms in all the R 4 groups is in the range of from 0.4(y + y') to 3.0(y + y'), preferably from 0.6(y + y') to 1.6(y + y'). M is H or a charge balancing cation; m is 0 to 5, preferably 0, 1, 2 or 3, more preferably 0 or 1; n is 0 to 5, preferably 0, 1, 2 or 3, more preferably 0 or 1; and the sum of m + n is in the range of from 1 to 10, preferably 1, 2 or 3, more preferably 1 or 2; each R 4 is independently selected from the group consisting of H, C 3-18 or C 4 -C 18 linear or branched alkyl, C 3-18 or C 4 -C 18 linear or branched alkenyl, and mixtures thereof; and wherein at least one R 4 group is not H; and preferably wherein the sum of carbon atoms in all the R 4 groups is in the range of from 0.4(y + y') to 3.0(y + y'), preferably from 0.6(y + y') to 1.6(y + y').