Patent ID: 7902139

Claim:
A laundry treatment composition comprising: (i) from 2 to 70 wt % of a surfactant comprising water-soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms; and ii) from 0.0001 to 0.1 wt % of an azine dye, wherein the dye is of the following core structure: wherein R a , R b , R c and R d are selected from: H, an branched or linear C1 to C7-alkyl chain, benzyl a phenyl, and a naphthyl; the dye is substituted with at least one SO 3 − or —COO − group; the B ring does not carry a negatively charged group or salt thereof; and the A ring may further substituted to form a naphthyl; the dye is optionally substituted by groups selected from: amine, methyl, ethyl, hydroxyl, methoxy, ethoxy, phenoxy, Cl, Br, I, F, and NO 2 , wherein the A ring is further substituted to form a naphthyl.