Cleanser

A cleanser comprising:

• an organosiloxane derivative salt represented by following formula (1) or (3) and
• one or more anionic surfactants selected from the group consisting of carboxylate salt with an alkyl group having 10 to 20 carbon atoms, sulfate salt with an alkyl group having 10 to 20 carbon atoms, sulfonate salt with an alkyl group having 10 to 20 carbon atoms, and phosphate salt with an alkyl group having 10 to 20 carbon atoms;
• wherein in formula (1), at least one of R1 to R3 is a functional group represented by —O—Si(R4)3 in which R4 is an alkyl group having 1 to 6 carbon atoms or a phenyl group, or a functional group represented by —O—Si(R5)2—X1 in which R5 is an alkyl group having 1 to 6 carbon atoms or a phenyl group, and X1 is a functional group represented by following formula (2) when i=1;
• and remaining R1 to R3 may be the same or different and each may be a substituted or unsubstituted monovalent hydrocarbon group;
• M is a metal atom or an organic cation;
• A is a linear or branched alkylene group represented by CqH2q in which q is any integer of 0 to 20;
• and the organosiloxane derivative represented by the formula (1) contains a total of 2 to 100 silicon atoms (Si) on average per molecule;
• wherein in the formula (2), R6 is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a phenyl group;
• R7 and R8 are respectively an alkyl group having 1 to 6 carbon atoms or a phenyl group;
• B is a linear or branched alkylene group represented by CrH2r which may be partially branched in which r is any integer of 2 to 20;
• and i specifies generation of a silylalkyl group represented by Xi and is any integer of 1 to n when the generation number is n, wherein the generation number n is any integer of 1 to 10;
• ai is any integer of 0 to 2 when i is 1, and is an integer smaller than 3 when i is 2 or larger;
• and Xi+1 is silylalkyl group when i is smaller than n, and is a methyl group when i=n.