US Patent 9968535 Personal care compositions comprising undecyl sulfates

A personal care composition comprising a dermatologically acceptable carrier, and from about 3 wt % to about 40 wt % of at least one undecyl sulfate compound selected from the group consisting of:a) R1—O(CH2CHR3O)y—SO3M;b) CH3—(CH2)z—CHR2—CH2—O(CH2CHR3O)y—SO3M; andc) mixtures thereof;where R1 represents CH3(CH2)10, R2 represents H or a hydrocarbon radical comprising 1 to 4 carbon atoms such that the sum of the carbon atoms in z and R2 is 8, R3 is H or CH3, y is 0 to 7, the average value of y is about 1 when y is not=0, and M is a mono-valent or di-valent, positively-charged cation.