A detergent composition containing: (a) an anionic surfactant selected from the group consisting of an alkylbenzenesulfonate, an alkyl sulfate, a soap, an alkanesulfonate, an olefinsulfonate, a methyl ester sulfonate, and mixtures thereof; (b) a non-enzymatic protein and/or derivative thereof; (c) a phosphate; (d) a disintegrating agent; an (e) optionally, a co-surfactant selected from the group consisting of a nonionic surfactant, an amphoteric surfactant, and mixtures thereof, and wherein the detergent composition is in a solid form.