FOAMING SKINCARE FORMULATIONS
In one aspect, the present invention is directed to formulations comprising at least one pressure generating vehicle along with at least one skincare active agent in a container such that the pressure generating vehicle would eject the formulation as foam, whipped cream or a similar form upon application of external pressure on the container.
1 . A skincare formulation for topical application in a device, the formulation comprising at least one pressure generating vehicle and at least one skincare active agent, wherein said pressure generating vehicle is present in said device in sufficient amounts and pressure suitable to expel said formulation in the form of foam or whipped cream upon application of external pressure on said device.
2 . The formulation of claim 1 , wherein the formulation additionally contains a thickening agent.
3 . The formulation of claim 1 , wherein the formulation additionally contains an emulsifier.
4 . The formulation of claim 1 , wherein the formulation is a water-in-oil emulsion.
5 . The formulation of claim 1 , wherein the formulation is an oil-in-water emulsion.
6 . The formulation of claim 1 , wherein the pressure generating vehicle is a gaseous propellant present in an amount of about 0.1% to about 30% by weight.
7 . The formulation of claim 6 , wherein the pressure generating vehicle is a gaseous propellant present in an amount of about 0.1% to about 10% by weight.
8 . The formulation of claim 1 , wherein the pressure generating vehicle is selected from the group consisting of CO 2 , propane, butane, isobutane, isobutene, dimethyl ether and nitrous oxide and mixtures thereof.
9 . The formulation of claim 8 , wherein the pressure generating vehicle is selected from carbon dioxide.
10 . The formulation of claim 9 , wherein said carbon dioxide is generated by mixing an acid and a base inside said device.
11 . The formulation of claim 10 , wherein said acid is acetic acid or citric acid.
12 . The formulation of claim 10 , wherein said base is selected from the group consisting of sodium bicarbonate, sodium carbonate, potassium bicarbonate and potassium carbonate.
13 . The formulation of claim 12 , wherein said base is sodium bicarbonate.
14 . The formulation of claim 1 additionally comprising one or more agents selected from the group consisting of an emollient, a humectant, a pH modifier, a colorant, and a foam stabilizer.
15 . A sunscreen formulation for topical application in a device, the formulation comprising at least one pressure generating vehicle and at least one sunscreen active agent, wherein said pressure generating vehicle is present in said device in sufficient amounts and pressure suitable to expel said formulation in the form of foam or whipped cream upon application of external pressure on said device.
16 . The formulation of claim 15 , wherein there are at least two sunscreen active agents.
17 . The formulation of claim 15 , wherein the pressure generating vehicle is a gaseous propellant present in an amount of about 0.1% to about 30% by weight.
18 . The formulation of claim 15 , wherein the pressure generating vehicle is a gaseous propellant present in an amount of about 0.1% to about 10% by weight.
19 . The formulation of claim 18 , wherein the pressure generating vehicle propellant is selected from the group consisting of CO 2 , propane, butane, isobutane, isobutene, dimethyl ether and nitrous oxide, and blends thereof.
20 . The formulation of claim 19 , wherein the pressure generating vehicle is selected from carbon dioxide.
21 . The formulation of claim 20 , wherein said carbon dioxide is generated by mixing an acid and a base inside said device.
22 . The formulation of claim 21 , wherein said acid is acetic acid or citric acid.
23 . The formulation of claim 21 , wherein said base is selected from the group consisting of sodium bicarbonate, sodium carbonate, potassium bicarbonate and potassium carbonate.
24 . The formulation of claim 15 additionally comprising one or more agents selected from the group consisting of an emollient, a humectant, a pH modifier, a colorant, and a foam stabilizer.