Compositions having low sulfate containing surfactants
The invention relates to lamellar liquid composition comprising acyl isethionate, methyl acyl taurate, amphoteric and/or zwitterionic surfactant. Unexpectedly, applicants have found that, when ratio of isethionate to taurate is kept at about to 1:1, enhanced lather is achieved. Other criticalities include ratio of amphoteric and/or zwitterionic to anionic surfactant, total amount of surfactant, and pH.
1. A no sulfate based liquid lamellar composition comprising:
1) 0.1 to 10% by weight of acyl isethionate;
2) 0.1% to 10% by weight of methyl acyl taurate comprising lauroyl methyl taurate, cocoyl methyl taurate or a mixture thereof;
3) 0.1 to 20% by weight structurant comprising caprylic acid, lauric acid, myristic acid or a mixture thereof;
4) a zwitterionic surfactant;
5) 0.0 to 8.0% by weight nonionic surfactant; and
6) 0 to 15% by weight glycerol
wherein the zwitterionic surfactant is present in an amount of 0.1 to 15 wt % and comprises cocamidopropyl betaine, with the provisos that:
i) total surfactant in the composition is less than 20% by weight;
ii) the composition does not simultaneously comprise 0.01% by weight or more nonionic surfactant and 0.1% by weight or more amphoteric surfactant and/or zwitterionic surfactant and does not simultaneously comprise 0.0% by weight amphoteric and/or zwitterionic surfactant and 0.0% by weight nonionic surfactant;
iii) the ratio of methyl acyl taurate to acyl isethionate surfactant is between 1.5:1 to 1:1.5;
iv) the zwitterionic surfactant to anionic surfactant is at a weight ratio from 1:5 to 2:1;
v) the composition has a pH from 5 to 7.4; and
vi) the composition comprises thickener,
the composition further comprising stearic acid, soybean oil, hydrogenated soybean oil, or a mixture thereof.
2. The composition according to claim 1 wherein the composition further comprises oleic acid, isostearic acid, linoleic acid, linolenic acid, ricinoleic acid or a mixture thereof.
3. The composition according to claim 1 wherein the composition comprises from 0.001 to 7% by weight of the nonionic surfactant.
4. The composition according to claim 1 wherein the composition further comprises phenoxyethanol, hydroxyacetophenone, sorbic acid, or a mixture thereof.
5. The composition according to claim 1 wherein the composition further comprises 1,2-octane diol, 1,2-pentane diol, 1,2-hexane diol or a mixture thereof.
6. The composition according to claim 3 wherein the nonionic surfactant is cocoamidopropyl amine oxide.
7. The composition according to claim 1 wherein the structurant is lauric acid making up from 0.5 to 8% by weight of the composition.
8. The composition according to claim 1 wherein the composition comprises from 0.5 to 8% by weight of the acyl isethionate.
9. The composition according to claim 1 wherein the composition comprises from 1 to 6% by weight of lauroyl methyl taurate, cocoyl methyl taurate or a mixture thereof.
10. The composition according to claim 1 wherein the composition comprises from 1 to 10% by weight lauric acid.
11. The composition according to claim 1 wherein the composition comprises from 0.5 to 8% by weight of the zwitterionic surfactant.
12. The composition according to claim 3 wherein the composition comprises from 1 to 6% by weight of the nonionic surfactant.
13. The composition according to claim 1 wherein the composition further comprises an antioxidant.
14. The composition according to claim 1 wherein the composition comprises from 0.02 to 10% by weight glycerol.
15. The composition according to claim 1 wherein the composition further comprises lavender oil, eucalyptus, lemon oil, starflower oil, thyme, peppermint, rose oil, sage, menthol, cineole, eugenol, citral, citronelle, borneol, linalool, geraniol, primrose, camphor, pinene, limonene, vitamin B3, resorcinol, terpineol, thymol or a mixture thereof.
16. The composition according to claim 1 wherein the composition further comprises benzoyl peroxide, zinc salt, tea tree oil, salicylic acid, lactic acid, glycolic acid, citric acid or a mixture thereof.
17. The composition according to claim 1 wherein the composition further comprises ricinoleic acid, shea butter, sunflower oil, sodium hydroxypropyl starch phosphate or a mixture thereof.
18. The composition according to claim 1 wherein the composition further comprises iodopropynyl butylcarbamate.
19. The composition according to claim 1 wherein the composition further comprises ceramide, vitamin B3, or Vitamin B3 and 4-ethyl resorcinol or 4-hexyl resorcinol or a mixture thereof.