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, wherein the formulation comprises at least one skincare active agent and carbon dioxide as the only pressure generating vehicle, the carbon dioxide being 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 carbon dioxide is gaseous carbon dioxide employed in an amount of from about 0.1% to about 30% by weight.
7. The formulation of claim 6 , wherein the carbon dioxide is employed in an amount of from about 0.1% to about 10% by weight.
8. The formulation of claim 1 , wherein the carbon dioxide is generated by mixing an acid and a base inside said device.
9. The formulation of claim 8 , wherein said acid is acetic acid or citric acid.
10. The formulation of claim 8 , wherein said base is selected from one or more of sodium bicarbonate, sodium carbonate, potassium bicarbonate, and potassium carbonate.
11. The formulation of claim 8 , wherein said base comprises sodium bicarbonate.
12. The formulation of claim 1 , wherein the formulation further comprises one or more agents selected from an emollient, a humectant, a pH modifier, a colorant, and a foam stabilizer.
13. A sunscreen formulation for topical application in a device, wherein the formulation comprises at least one sunscreen active agent and carbon dioxide as the only pressure generating vehicle, the carbon dioxide being 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.
14. The formulation of claim 13 , wherein the formulation comprises at least two sunscreen active agents.
15. The formulation of claim 13 , wherein the carbon dioxide is gaseous carbon dioxide employed in an amount of from about 0.1% to about 30% by weight.
16. The formulation of claim 15 , wherein the carbon dioxide is employed in an amount of from about 0.1% to about 10% by weight.
17. The formulation of claim 13 , wherein the carbon dioxide is generated by mixing an acid and a base inside said device.
18. The formulation of claim 17 , wherein said acid is acetic acid or citric acid.
19. The formulation of claim 17 , wherein said base is selected from one or more of sodium bicarbonate, sodium carbonate, potassium bicarbonate, and potassium carbonate.
20. The formulation of claim 17 , wherein said base comprises sodium bicarbonate.
21. The formulation of claim 18 , wherein said base is sodium bicarbonate.
22. The formulation of claim 13 , wherein the formulation further comprises one or more agents selected from an emollient, a humectant, a pH modifier, a colorant, and a foam stabilizer.