Personal care composition and method of use thereof
A solid personal care composition comprising at least 60 wt % of one or more solid surfactants of which at least 10 wt % comprises one or more compounds of formula (I) wherein R 1 represents a C 4-36 substituted or unsubstituted hydrocarbyl group; each of R 2 , R 3 , R 4 and R 5 independently represents a hydrogen atom or a C 1-4 alkyl group and wherein at least one of R 2 , R 3 , R 4 and R 5 is not hydrogen; and M+ represents a cation.
1. A solid personal care foamable shampoo composition comprising at least 65 wt % of one or more solid surfactants of which at least 90 wt % comprises one or more compounds of formula (I):
wherein R 1 represents a C 7 to C 21 alkyl;
each of R 2 , R 3 , R 4 and R 5 independently represents a hydrogen atom or a C 1-4 alkyl group and
wherein at least one of R 2 , R 3 , R 4 and R 5 is not hydrogen; and M+ represents sodium, zinc, potassium or ammonium; and
wherein the composition comprises less than 5 wt % of traditional soap compounds.
2. The composition according to claim 1 wherein one or more compounds of formula (I) is selected from sodium lauroyl methyl isethionate, sodium cocoyl methyl isethionate, sodium oleoyl methyl isethionate and mixtures and/or isomers thereof.
3. The composition according to claim 1 wherein the compound of formula (I) comprises a mixture of isomers including a compound of formula R 1 COOCH 2 CHR 4 SO 3 − M + in which R 4 is C 1 to C 4 alkyl and a compound of formula R 1 COOCHR 2 CH 2 SO 3 − M + in which R 2 is C 1 to C 4 alkyl.
4. The composition according to claim 1 which further comprises one or more surfactants selected from anionic surfactants, cationic surfactants, nonionic surfactants and amphoteric surfactants.
5. The composition according to claim 1 which further includes one or more ingredients selected from fragrances, dyes, structuring aids, fillers, pH adjustment agents, chelating agents, antidandruff agents and conditioning agents.
6. A personal care product comprising the composition according to claim 1 and packaging.
7. The composition according to claim 1 which comprises at least 80 wt % solid surfactants.
8. The composition according to claim 1 wherein at least 95 wt % of the solid surfactants present in the composition comprise one or more compounds of formula (I).
9. The composition according to claim 1 which further comprises from 0.1 to 10 wt % of a betaine surfactant.
10. The composition according to claim 1 which further comprises from 0.1 to 10 wt % of a taurate surfactant.
11. The composition according to claim 1 which comprises at least 70 wt % solid surfactants.
12. The composition according to claim 11 wherein at least 95 wt % of the solid surfactants present in the composition comprise one or more compounds of formula (I).
13. The composition according to claim 1 which comprises 75 wt % solid surfactants.
14. The composition according to claim 13 wherein at least 95 wt % of the solid surfactants present in the composition comprise one or more compounds of formula (I).