Epilatory Compositions
The present invention provides an epilatory composition comprising an admixture of a hydrocarbon resin material and a mineral oil in weight ratio of 1.3:1 to 2.8:1, particulate silica, and, a polyethylene in the form of a homopolymer. An advantage of the compositions of the present invention is that they are able to provide good ‘grip’ to the hair to be removed and so provide for effective hair removal properties.
1 . An epilatory composition comprising:
a hydrocarbon resin;
a mineral oil in a weight ratio in the range of from 1.3:1 to 2.8:1;
particulate silica; and
a polyethylene in the form of a homopolymer.
2 . The epilatory composition as claimed in claim 1 , wherein the ratio of hydrocarbon resin to mineral oil is in the range of from 1.5:1 to 2.3:1.
3 . The epilatory composition as claimed in claim 1 , wherein the ratio of hydrocarbon resin to mineral oil is in the range of from 1.9:1 to 2.2:1.
4 . The epilatory composition as claimed in claim 1 , wherein the ratio of hydrocarbon resin to mineral oil is in the range of from 1.9:1 to 1.95:1.
5 . The epilatory composition as claimed in claim 1 , wherein the hydrocarbon resin is selected from the group consisting of poly(methylstyrene-co-indene), hydrogenated polycyclopentadiene resin, C 5 -C 9 partially or fully hydrogenated hydrocarbon resin, and hydrogenated styrene/methyl styrene/indene copolymer.
6 . The epilatory composition as claimed in claim 1 , wherein the hydrocarbon resin is hydrogenated styrene/methyl styrene/indene copolymer.
7 . The epilatory composition as claimed in claim 1 , wherein the epilatory composition comprises from 55-70% wt/wt of hydrocarbon resin.
8 . The epilatory composition as claimed in claim 1 , wherein the epilatory composition comprises from 63-68% wt/wt of hydrocarbon resin.
9 . The epilatory composition as claimed in claim 1 , wherein the epilatory composition comprises from 64-66% wt/wt of hydrocarbon resin.
10 . The epilatory composition as claimed in claim 1 , wherein the polyethylene has a molecular weight in the range of from 100 to 1000 unified mass units.
11 . The epilatory composition as claimed in claim 1 , wherein the polyethylene has a molecular weight in the range of from 250 to 800 unified mass units.
12 . The epilatory composition as claimed in claim 1 , wherein the polyethylene has a molecular weight in the range of from 300 to 600 unified mass units.
13 . The epilatory composition as claimed in claim 1 , wherein the polyethylene is present in an amount in the range of from 0.1% to 5% by weight of the epilatory composition.
14 . The epilatory composition as claimed in claim 1 , wherein the polyethylene is present in an amount in the range of from 0.5% to 3.0% by weight of the epilatory composition.
15 . The epilatory composition as claimed in claim 1 , wherein the polyethylene is present in an amount in the range of from 0.75% to 1.5% by weight of the epilatory composition.
16 . The epilatory composition as claimed in claim 1 , wherein the ratio of particulate silica to polyethylene is in the range of from 16:1 to 2:3.
17 . The epilatory composition as claimed in claim 1 , wherein the ratio of particulate silica to polyethylene is in the range of from 6:1 to 6:5.
18 . The epilatory composition as claimed in claim 1 , wherein the ratio of particulate silica to polyethylene is 2:1.
19 . The epilatory composition as claimed in claim 1 , wherein particulate silica is present in an amount of substantially about 2.0% by weight of the epilatory composition.
20 . (canceled)
21 . An epilatory composition comprising:
64-66 wt % of a hydrogenated styrene/methyl styrene/indene copolymer;
31-33 wt % of a mineral oil;
1-2 wt % of a particulate silica; and
0.8-1.2 wt % of a polyethylene in the form of a linear homopolymer;
wherein the ratio of hydrogenated styrene/methyl styrene/indene copolymer to mineral oil is in the range of from 1.9:1 to 1.95:1.
22 . (canceled)
23 . An epilatory composition consisting essentially of:
60-68.5 wt % of a hydrogenated styrene/methyl styrene/indene copolymer;
30-38.5 wt % of a mineral oil;
1-2 wt % of a particulate silica; and
0.5-1.5 wt % of a polyethylene in the form of a linear homopolymer.
24 .- 25 . (canceled)
26 . The epilatory composition as claimed in claim 1 further comprising:
shea butter; and
a fragrance;
wherein the hydrocarbon resin comprises hydrogenated styrene/methyl styrene/indene copolymer;
wherein the mineral oil comprises paraffin oil;
wherein the polyethylene in the form of a linear homopolymer; and
wherein the epilatory composition comprises:
64-66% of the hydrogenated styrene/methyl styrene/indene copolymer;
31-33% of the paraffin oil;
1-2% of the particulate silica; and
0.5-1.5 wt % of the polyethylene in the form of the linear homopolymer.