Hair fixative film
The present invention relates to a hair fixative film, which contains a natural and/or synthetic polymer as the main component and a method of applying said film to hair. Such film is useful in maintaining a desired look and style of hair. Furthermore, the film is beneficial because it enables the combination of ingredients that are incompatible in other application forms.
1. A hair fixative film comprising:
(a) at least one hair fixative polymer comprising a mixture of synthetic and natural polymers, wherein the ratio of synthetic to natural polymer is from about 20:80 to about 75:25 and wherein the synthetic polymers are selected from the group consisting of acrylates copolymer, polyurethane, polystyrenic, polyvinyl amide, polyvinyl ester, acrylates/octylacrylamide copolymer and mixtures thereof; and
(b) a plasticizer;
wherein the hair fixative film is an unsupported film and has a thickness of about 1 to about 500 microns,
wherein the hair fixative film provides hair stiffness of from about 0.004 Joules to about 0.030 Joules when applied to hair,
wherein the hair fixative film dissolves when exposed to water, and
wherein the hair fixative film has a high humidity curl retention of greater than 30 percent after 2 hours.
2. The film of claim 1 , wherein said plasticizer is selected from the group consisting of polyol, polycarboxylic acid, dimethicone copolyol, polyester and mixtures thereof.
3. The film of claim 1 , wherein said plasticizer is selected from the group consisting of propylene glycol, glycerol, dipropylene glycol, hydrolyzed wheat protein, hydrolyzed wheat starch, PEG-12 dimethicone and mixtures thereof.
4. The film of claim 1 wherein the synthetic polymer is selected from the group of octylacrylamide/acrylates/butylaminoethyl methacrylate, VA/crotonates/vinylneodecanoate copolymer, polyvinyl pyrrolidone, polyvinylpyrrolidone/vinylacetate copolymer and mixtures thereof, and the natural polymer is selected from the group consisting of xanthan gum, physically modified starch, chemically modified starch, polyquaternium-10, polyquaternium-4 and mixtures thereof.
5. The hair fixative film of claim 1 further comprising about 1 to 30 percent of a base based on total weight of the film.
6. The film of claim 5 , wherein the fixative polymer is a mixture of octylacrylamide/acrylates/butylaminoethyl methacrylate, polyvinyl pyrrolidone, and modified corn starch, and wherein the ratio of synthetic polymer to natural polymer is in a range from about 35:65 to about 42:58, and wherein the plasticizer is propylene glycol in a range from about 8 to about 11 percent.
7. The film of claim 5 , wherein the fixative polymer is a mixture of polyquaternium-4, corn starch modified, and polyvinylpyrrolidone/vinylacetate copolymer, and wherein the ratio of synthetic polymer to natural polymer is in a range from about 29:71 to about 33:67, and wherein the plasticizer is propylene glycol in an amount from about 6 to 9 percent.
8. A method of styling hair, comprising:
dissolving the hair fixative film of claim 1 in a solvent, and
applying the hair fixative film to hair.
9. The film of claim 1 wherein the plasticizer is present in an amount of 5 to 30 percent by weight, based on total weight of the hair fixative film.
10. The film of claim 1 wherein the plasticizer is present in an amount of 5 to 15 percent by weight, based on total weight of the hair fixative film.
11. The film of claim 1 wherein when the at least one hair fixative polymer comprises at least 60% (wt/wt) of natural polymer based upon total weight of the hair fixative polymer, the plasticizer is present in an amount greater than 15 percent based upon weight of the natural polymer.
12. The film of claim 1 wherein the hair fixative film provides hair stiffness of from about 0.012 Joules to about 0.025 Joules when applied to hair.
13. The film of claim 1 further comprising at least one effervescing agent.
14. The film of claim 13 wherein the effervescing agent comprises an acid component and an alkaline component.