Foaming skincare formulations

1. A sunscreen formulation for topical application in a device, the formulation comprising

a pressure generating vehicle and at least three sunscreen active agents, and wherein said pressure generating vehicle consists of nitrous oxide, and

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, and

wherein the sunscreen active agents are selected from avobenzone, dioxybenzone, homosalate, octocrylene, octyl salicylate, oxybenzone, octisalate, titanium dioxide or zinc oxide.

2. The formulation of claim 1 , wherein the formulation additionally contains a thickening agent.

3. The formulation of claim 2 , wherein the formulation additionally contains an emulsifier.

4. The formulation of claim 1 , wherein the nitrous oxide is present in an amount of about 0.1% to about 30% by weight.

5. The formulation of claim 4 , wherein the nitrous oxide is present in an amount of about 0.1% to about 10% by weight.

6. The formulation of claim 2 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.

7. The formulation of claim 1 further comprising:

octocrylene;

octisalate;

homosalate;

avobenzone;

oxybenzone;

a foam stabilizer comprising a mixture of cellulose gum and microcrystalline cellulose; and

an emulsifier mixture comprising a combination of emulsifiers selected from behenyl alcohol, glyceryl stearate, palmitic acid, stearic acid, myristyl alcohol, lauryl alcohol, cetyl alcohol and lecithin.