Shampoo Compositions Comprising a Chelant

A shampoo composition comprising:

• (a) from about 0.005% to about 10% of one or more chelants, by weight of the shampoo composition, wherein the one or more chelants comprise a Class I chelant and/or a Class II chelant, wherein the Class I chelants are represented by molecular structure I:
• wherein
• M is hydrogen or a metal ion;
• R1, R2, R3, and R4 are independently selected from the group consisting of hydrogen, —COOM, hydroxyl, —NH2, methyl, ethyl, propyl, butyl, pentyl, phenyl, and combinations thereof;
• and wherein the Class I chelant comprises:
• (3) log of the formation constant log KML of its complex with copper is greater than 3;
• (2) log P value is from about 0 to about 5;
• and
• (3) molecular weight is from about 123 to about 350;
• and wherein the Class II chelants are represented by molecular structure II:
• wherein
• M is hydrogen or a metal ion;
• R5, R6, R7, R8, R9, and Rio are independently selected from the group consisting of hydrogen, —COOM, hydroxyl, —NH2, methyl, ethyl, propyl, butyl, pentyl, phenyl, and combinations thereof;
• and wherein the Class II chelant comprises:
• (3) log of the formation constant log KML of its complex with copper is greater than 3;
• (2) log P value is from about 0 to about 5;
• and
• (3) molecular weight is from about 173 to about 400;
• (b) from about 2% to about 50% of one or more detersive surfactants, by weight of the shampoo composition;
• and
• (c) from about 75% to about 98% of an aqueous carrier, by weight of the shampoo composition;
• wherein the shampoo composition has a pH of about 3 to about 8.