Laundry liquid composition

A liquid laundry detergent formulation comprising:

• (i) from 5 to 70 wt % of a mixture of anionic and non-ionic surfactant, wherein the fraction wt % anionic/wt % nonionic is at least 1 and the anionic surfactants are chosen such that the fraction wt % alkyl ether sulphate/wt % total anionic surfactant is at least 0.5 and the alkyl ether sulphate has from 1.0 EO to 1.9 EO;
• and,
• (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 6 to 1000000 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:
• dichlorotriazinyl;
• difluorochloropyrimidine;
• monofluorotrazinyl;
• monofluorochlorotrazinyl;
• dichloroquinoxaline;
• difluorotriazine;
• monochlorotriazinyl;
• trichloropyrimidine 2-bromoprop-2-enamido;
• dibromopropanamido;
• and, a sulfooxyethylsulfonyl reactive group which is —SO2CH2CH2OSO3Na.