Laundry liquid composition

A liquid detergent formulation comprising:

• (i) from 5 to 70 wt % of a mixture of anionic and non-ionic surfactant, wherein the non-ionic surfactant is chosen from aliphatic C12 to Cis primary linear alcohols with ethylene oxide, with 8.5 to 9.5 EO groups, wherein the anionic surfactant is selected from the group consisting of:
• alkyl ether sulphate (AES);
• primary alkyl sulphate PAS, soap;
• methyl ester sulfonate (MES);
• and, linear alkylbenzene sulfonate (LAS), and wherein the fraction wt % anionic/wt % non-ionic is from 1 to 6;
• (ii) from 0.001 to 2.0 wt % of a dye polymer, the dye polymer comprising a polyethylene imine covalently bound to a reactive dye, the polyethylene imine having from 10 to 200 amine nitrogen atoms, wherein from 57 to 98 mol % of the totality of the protons of the primary and secondary amine nitrogen atoms of the unsubstituted polyethylene imine are substituted by iso-propyl alcohol groups;
• wherein the reactive dye is an anthraquinone dye of the form:
• wherein the A ring is substituted by a reactive group selected from the group consisting of:
• dichlorotriazinyl, difluorochloropyrimidine, monofluorotrazinyl, monofluorochlorotrazinyl, dichloroquinoxaline, difluorotriazine, monochlorotriazinyl, trichloropyrimidine 2-bromoprop-2-enamido, 2,3-dibromopropanamido, and, a sulfooxyethylsulfonyl reactive group which is —SO2CH2CH2OSO3Na.