Patent ID: 8729007

Claim:
An acidic laundry detergent composition comprising: a) from about 5% to about 18% by weight of the detergent of a surfactant system, wherein said surfactant system comprises anionic surfactant comprising alkyl benzene sulfonic acids and their salts, wherein said surfactant system further comprises nonionic surfactant, and wherein the surfactant system has a Hydrophilic Index of greater than or equal to about 9.00; b) an organic acidulant at a level such that the ratio of surfactant system to organic acidulant is less or equal to about 3.0; c) an alkaline neutralizer added in an amount necessary to raise the neat pH of the detergent composition above or equal to about 2.5 but no higher than or equal to about 3.0; and wherein the composition further comprises a laundry adjunct material comprising a brightener.