METHOD OF USING PEELABLE FILM-FORMING COMPOSITION
The compositions and methods of this invention relate to peelable film-forming compositions that may be applied to and removed from the skin containing polyvinyl alcohols and adhesion-enhancing polymers.
1 . A method of treating skin with a peelable, adhesive film-forming composition, said method comprising:
spreading a composition comprising the following ingredients onto the skin:
(a) a high molecular weight polyvinyl alcohol;
(b) an adhesion enhancing polymer selected from the group consisting of polyesters, polyurethanes, polyvinylcaprolactam, and a combination thereof, said adhesion enhancing polymer component; and
(c) a low molecular weight polyvinylalcohol component;
allowing the composition to dry completely when applied to human skin to form a film; and
peeling the film from the skin with an adhesive force of about 5 to about 25 ounces to remove the film with undesirable material from the skin without damaging the skin or disrupting the outer layer of the skin.
2 . The method of claim 1 , wherein the ratio of component (a) to component (c) in the composition is from about 1:1 to about 6:1.
3 . The method of claim 2 , wherein the ratio of component (a) to component (c) in the said composition is from about 2:1 to about 3:1.
4 . The method of claim 1 , wherein the high molecular weight polyvinyl alcohol has a degree of hydrolysis from about 50% to about 99%.
5 . The method of claim 1 , wherein the low molecular weight polyvinyl alcohol has a degree of hydrolysis from about 50% to about 99%.
6 . The method of claim 4 , wherein the degree of hydrolysis is from about 75% to about 95%.
7 . The method of claim 5 , wherein the degree of hydrolysis is from about 75% to about 95%.
8 . The method of claim 4 , wherein the degree of hydrolysis is from about 87% to about 89%.
9 . The method of claim 5 , wherein the degree of hydrolysis is from about 87% to about 89%.
10 . The method of claim 1 , wherein:
the composition further comprises a skin conditioning agent; and
removing the film further comprises leaving behind skin conditioning agent on the skin.
11 . The method of claim 1 , wherein:
the composition further comprises a skin conditioning agent; and
removing the film further comprises leaving behind skin conditioning agent on the skin.
12 . The method of claim 1 , wherein:
the composition further comprises an active agent selected from the group consisting of: an anti-inflammatory, an antioxidant, an antimicrobial, a moisturizing agent, an anti-hyperpigmentation agent, an anti-blotching agent, an anti-aging agent, an anti-collagenase substance, a free radical scavenger, a seboregulator, a hydrative, an anti-acne agent, a keratolytic agent, and an α- or β-hydroxy acid; and
removing the film further comprises leaving behind active agent on the skin.
13 . The method of claim 12 , wherein:
the anti-acne agent is salicylic acid; and
the salicylic acid is present in the composition in an amount of from about 0.5% to about 2% by weight of the composition.
14 . The method of claim 12 , wherein:
the anti-acne agent is sulfur; and
the sulfur is present in the composition in an amount of from about 1% to about 10% by weight of the composition.
15 . The method_of claim 12 , wherein:
the anti-acne agent is one or more alpha-hydroxy acids; and
the alpha-hydroxy acids are present in said composition in the amount of from about 5% to about 10% by weight of said composition.
16 . The method of claim 1 , wherein:
the total weight percent of components (a) and (b) in the composition does not exceed 20%;
the total weight percent of components (a) and (c) in the composition does not exceed 20%; and
the total weight percent of components (a) plus (b) plus (c) does not exceed 25%.
17 . The method of claim 16 , wherein:
the high molecular weight polyvinyl alcohol is present in the composition in the amount of from about 10 to about 16% by weight of the composition;
the adhesion enhancing polymer is present in the composition in the amount of from about 0.5 to about 4% by weight of the composition; and
the low molecular weight polyvinylalcohol component is present in an amount of from about 0 to about 5% by weight of the composition.
18 . The method of claim 1 , wherein:
the high molecular weight polyvinyl alcohol is present in the composition in the amount of from about 10 to about 16% by weight of the composition;
the adhesion enhancing polymer is present in the composition in the amount of from about 0.5 to about 4% by weight of the composition; and
the low molecular weight polyvinylalcohol component is present in an amount of from about 0 to about 5% by weight of the composition.
19 . The method of claim 1 , wherein the ratio of component (a) to component (c) in the composition is from about 1:1 to about 6:1.
20 . The method of claim 1 , wherein the adhesion enhancing polymer is present in the composition in the amount of from about 0.5 to about 4% by weight of the composition.
21 . A method of treating skin with a peelable, adhesive film-forming spreadable composition comprising film-forming polymers, adhesion enhancing polymers, a solvent/diluent, and a delivery vehicle, said method comprising:
spreading the composition on the skin in a continuous manner;
leaving the composition on the skin to allow the liquid vehicle of the composition to evaporate so that the composition forms a continuous film that adheres to the skin;
peeling the film from the skin with an adhesive force of about 5 to about 25 ounces to remove the film with undesirable material from the skin without damaging the skin or disrupting the outer layer of the skin.
22 . The method of claim 21 , wherein the composition further comprises an active ingredient, said method further comprising leaving behind the active on the skin upon removal of the film.
23 . The method of claim 22 , wherein the composition further comprises a skin benefit agent, said method further comprising allowing the skin benefit agent to provide a skin benefit.
24 . The method of claim 23 , wherein peeling the film from the skin removes material while leaving behind at least one of the skin benefit and active ingredient on the skin.
25 . The method of claim 21 , wherein the composition further comprises a skin benefit agent, said method further comprising allowing the skin benefit agent to provide a skin benefit.
26 . The method of claim 21 , further comprising applying a marble-sized amount of the composition to the skin.
27 . The method of claim 21 , further comprising allowing the composition to dry for 10 to 15 minutes.
28 . The method of claim 21 , wherein removing undesirable material from the skin comprises exfoliating the skin.The method of claim 21 , wherein removing undesirable material from the skin comprises removing comedones.
29 . The method of claim 21 , wherein allowing the liquid vehicle to evaporate comprises allowing the solvent/diluent to evaporate.
30 . The method of claim 21 , wherein the film-forming polymer is present in the amount of from about 1 to about 10% by weight of the composition.