LIQUID COMPOSITIONS FOR HAIR REMOVAL DEVICES
The invention relates to liquid compositions for use with hair removal devices comprising a silicone polyether block copolymer comprising from 1% to 50%, by weight of polyethylene oxide, from 20% to 90% by weight of polypropylene oxide and from 1% to 20%, by weight of silicone for improved lubrication.
1 . A composition dispensing hair removal device, said device comprising a composition comprising from about 0.1% to about 60% by weight of a silicone polyether block copolymer wherein said silicone polyether block copolymer comprises from about 1 to about 50%, by weight of polyethylene oxide, from about 20% to about 90% by weight of polypropylene oxide and from about 1% to about 20%, by weight of silicone.
2 . The device according to claim 1 , wherein said silicone polyether block copolymer comprises from about 1% to about 30%, by weight of polyethylene oxide, from about 20% to about 80% by weight of polypropylene oxide and from about 1 to about 20%, by weight of silicone.
3 . The device according to claim 1 , wherein said silicone polyether block copolymer comprises from about 15% by weight of silicone.
4 . The device according to claim 1 , wherein said silicone polyether block copolymer has a molecular weight of from about 10000 to about 19000.
5 . The device according to claim 1 , wherein said silicone polyether block copolymer has a molecular weight of from about 10000 to about 15000.
6 . The device according to claim 1 , wherein said silicone polyether block copolymer has a ratio of polyethylene oxide to polypropylene oxide of from about 2.0 to about 0.1.
7 . The device according to claim 6 , wherein said silicone polyether block copolymer has a ratio of polyethylene oxide to polypropylene oxide of from about 0.6 to 0.25.
8 . The device according to claim 1 , wherein said composition further comprises from about 0.1% to about 8% by weight of a water soluble polymer and preferably wherein the ratio of said water soluble polymer to said silicone block copolymer is from about 1:5 to about 5:1.
9 . The device according to claim 8 , wherein said water soluble polymer is selected from polyethylene oxide, polyvinyl pyrrolidone, polyacrylamide, polyhydroxymethacrylate, polyvinyl imidazoline, polyethylene glycol, polyvinyl alcohol, polyhydroxyethymethacrylate, guars, celluloses, modified celluloses and mixtures thereof.
10 . The device according to claim 5 , wherein said water soluble polymer is polyethylene oxide having an average molecular weight of at least about 300000.
11 . The device according to claim 10 , wherein said polyethylene oxide has an average molecular weight of from about 1 million to about 5 million.
12 . The device according to claim 1 , wherein said composition further comprising from about 0.1% to about 8%, by weight of the lubricating material of a copolymer of polyethylene oxide and polypropylene oxide.
13 . The device according to claim 1 wherein said composition comprises from about 0.1% to about 5% of a thickening agent and at least about 30% by weight of water.
14 . The device according to claim 1 , wherein said device comprises a handle connected to a hair removal head, wherein said handle comprises a cavity for housing said composition disposed within said handle and an actuator adapted to displace said composition from said cavity to a fluid dispensing member.
15 . The device according to claim 10 , wherein said fluid dispensing member comprises an elongated contact region forming at least one dispensing orifice.
16 . The device according to claim 11 , wherein said elongate elastomeric contact region forms a one way valve, preferably selected from a flap valve, a slit valve, a duckbill valve and a combination thereof.
17 . A personal care composition comprising from about 40% to about 95% by weight of water, about 1% to about 6% by weight of a volatile post foaming agent and from about 0.1% to about 60% by weight of silicone polyether block copolymer wherein said silicone polyether block copolymer comprises at comprises from about 1 to about 50%, by weight of polyethylene oxide, from about 20% to about 90% by weight of polypropylene oxide and from about 1 to about 20%, by weight of silicone.