Compositions for application to the skin for reducing adhesion of pollution particles on skin and methods of preparing same

1. A composition for topical application to the skin of a mammal comprising:

(a) a hydrophobic non-volatile solvent;

(b) a hydrophobic non-volatile high melting point material, wherein the hydrophobic non-volatile high melting point material has a melting point in the range of 60° C. and 100° C., wherein the hydrophobic non-volatile high melting point material comprises an acrylic copolymer with dendrimeric silicone groups comprising an acrylates/polytrimethylsiloxymethacrylate copolymer; and

(c) a hydrophobic volatile solvent comprising isododecane, wherein the hydrophobic volatile solvent compatibilizes the hydrophobic non-volatile solvent and the hydrophobic non-volatile high melting point material; and

wherein the hydrophobic non-volatile high melting point material is selected to be at least partially incompatible with the hydrophobic non-volatile solvent in the absence of the hydrophobic volatile solvent,

where the acrylates/polytrimethylsiloxymethacrylate copolymer and isododecane are present in an amount of at least 5 weight % of the composition.

2. The composition of claim 1 , further comprising (d) water and (e) one or more emulsifying systems, the composition being in a form of an oil-in-water emulsion, a water-in-oil emulsion, or a hydrogel, wherein the non-volatile high melting point material is selected to be at least partially incompatible with the hydrophobic non-volatile solvent and the one or more emulsifying systems in the absence of the hydrophobic volatile solvent.

3. The composition according to claim 1 , wherein the hydrophobic non-volatile solvent is selected from hydrocarbon oils of animal origin, hydrocarbon oils of vegetable origin, linear and branched hydrocarbons of mineral and synthetic origin, synthetic ethers comprising from 10 to 40 carbon atoms, synthetic esters, fatty alcohols that are liquid at ambient temperature and that comprise a branched and/or unsaturated carbon chain comprising from 12 to 26 carbon atoms, linear polydimethylsiloxanes, branched polydimethylsiloxanes, polydimethylsiloxanes substituted with fluoro, hydroxyl, thiol, amine, aliphatic, aromatic, polyoxyalkylene groups, fatty acids, fatty alcohols, sunfilters, or any combination thereof.

4. The composition according to claim 1 , wherein the hydrophobic non-volatile high melting point material is characterized by having an amorphous phase, a crystalline phase, or a combination of an amorphous phase and a crystalline phase at 25° C. and atmospheric pressure conditions.

5. The composition according to claim 1 , wherein the hydrophobic non-volatile high melting point material has a melting point in the range of 60° C. and 90° C.

6. The composition of claim 2 , wherein the one or more emulsifying systems are selected from PEG, PEG/PPG or polyglycerin modified dimethicone, alkyldimethicone, dimethicone crosspolymer or ABn copolymer derivatives, fatty acid esters of polyols, polyoxyethylenated fatty acid esters of sorbitol; polyoxyethylenated alkyl ethers, carboxylates, amino acid derivatives, alkyl sulfates, alkyl ether sulfates and oxyethylenated derivatives thereof, sulfonates, isethionates, N-acylisethionates, taurates, N-acyl N-methyltaurates, sulfosuccinates, alkylsulfoacetates, phosphates, alkyl phosphates, polypeptides, anionic derivatives of alkyl polyglycoside, fatty acid soaps, polymeric o/w emulsifiers, or any combination thereof.

7. The composition according to claim 1 , further comprising one or more ingredients selected from humectants, emollients, exfoliate agents, vitamins and their derivatives, natural extracts and their derivatives, anti-oxidants, radical scavengers, anti-acne agents, anti-inflammatory agents, antimicrobial agents, antibacterial agents, antifungal agents, anti-itch agents, peptides, proteins, sunscreens, sunfilters, skin lightening agents, tanning agents, drugs, pigments, dyes, electrolytes, sequestrants, anhydrous liquids, thickeners/rheology modifiers, preservatives, fragrances, pH modifiers, and combination(s) thereof.

8. The composition according to claim 1 , the composition being configured to create a film having micro-roughness when applied onto skin or a collagen sheet and having a non-smooth surface on scanning electron microscopy images with magnification ×1,000.

9. The composition according to claim 1 , wherein the composition is present in a skin care or cosmetic product in a form selected from lotions, creams, moisturizers, facial treatments, primers, concealers, foundations, make-ups, color cosmetics, blushes, lipsticks, lip balms, eyeliners, powders, and sunscreens.

10. A method of preparing a composition for topical application to the skin of a mammal, comprising the steps of mixing:

(a) a hydrophobic non-volatile solvent;

(b) a hydrophobic non-volatile high melting point material, wherein the hydrophobic non-volatile high melting point material has a melting point in the range of 60° C. and 100° C., wherein the hydrophobic non-volatile high melting point material comprises an acrylic copolymer with dendrimeric silicone groups comprising an acrylates/polytrimethylsiloxymethacrylate copolymer; and

(c) a hydrophobic volatile solvent comprising isododecane, wherein the hydrophobic volatile solvent compatibilizes the hydrophobic non-volatile solvent and the hydrophobic non-volatile high melting point material; and

wherein the hydrophobic non-volatile high melting point material is selected to be at least partially incompatible with the hydrophobic non-volatile solvent in the absence of the hydrophobic volatile solvent,

where the acrylates/polytrimethylsiloxymethacrylate copolymer and isododecane are present in an amount of at least 5 weight % of the composition.

11. The method of claim 10 , further comprising mixing (d) water and (e) one or more emulsifying systems with the hydrophobic non-volatile solvent, the hydrophobic non-volatile high melting point material, and the hydrophobic volatile solvent into an oil-in-water emulsion, a water-in-oil emulsion, or a hydrogel, wherein the non-volatile high melting point material is selected to be at least partially incompatible with the hydrophobic non-volatile solvent and the one or more emulsifying systems in the absence of the hydrophobic volatile solvent.

12. A method for forming a protective film on the skin of a mammal, comprising topically administering to the skin a composition comprising:

(a) a hydrophobic non-volatile solvent;

(b) a hydrophobic non-volatile high melting point material, wherein the hydrophobic non-volatile high melting point material has a melting point in the range of 60° C. and 100° C., wherein the hydrophobic non-volatile high melting point material comprises an acrylic copolymer with dendrimeric silicone groups comprising an acrylates/polytrimethylsiloxymethacrylate copolymer; and

(c) a hydrophobic volatile solvent comprising isododecane, wherein the hydrophobic volatile solvent compatibilizes the hydrophobic non-volatile solvent and the hydrophobic non-volatile high melting point material; and

wherein the non-volatile high melting point material is selected to be at least partially incompatible with the hydrophobic non-volatile solvent and the one or more emulsifying systems in the absence of the hydrophobic volatile solvent; and

where the acrylates/polytrimethylsiloxymethacrylate copolymer and isododecane are present in an amount of at least 5 weight % of the composition, and wherein the composition creates a protective film on the skin that minimizes adhesion of unwanted particles.

13. The method of claim 12 , wherein the composition further comprises (d) water and (e) one or more emulsifying systems, the composition being in a form of an oil-in-water emulsion, a water-in-oil emulsion, or a hydrogel, wherein the non-volatile high melting point material is selected to be at least partially incompatible with the hydrophobic non-volatile solvent and the one or more emulsifying systems in the absence of the hydrophobic volatile solvent.

14. The method of claim 12 , wherein the hydrophobic non-volatile solvent is selected from hydrocarbon oils of animal origin, hydrocarbon oils of vegetable origin, linear and branched hydrocarbons of mineral and synthetic origin, synthetic ethers comprising from 10 to 40 carbon atoms, synthetic esters, fatty alcohols that are liquid at ambient temperature and that comprise a branched and/or unsaturated carbon chain comprising from 12 to 26 carbon atoms, linear polydimethylsiloxanes, branched polydimethylsiloxanes, polydimethylsiloxanes substituted with fluoro, hydroxyl, thiol, amine, aliphatic, aromatic, polyoxyalkylene groups, fatty acids, fatty alcohols, sunfilters, or any combination thereof.

15. The method of claim 12 , wherein the one or more emulsifying systems are selected from PEG, PEG/PPG or polyglycerin modified dimethicone, alkyldimethicone or dimethicone crosspolymer derivatives, fatty acid esters of polyols, polyoxyethylenated fatty acid esters of sorbitol; polyoxyethylenated alkyl ethers, carboxylates, amino acid derivatives, alkyl sulfates, alkyl ether sulfates and oxyethylenated derivatives thereof, sulfonates, isethionates, N-acylisethionates, taurates, N-acyl N-methyltaurates, sulfosuccinates, alkylsulfoacetates, phosphates, alkyl phosphates, polypeptides, anionic derivatives of alkyl polyglycoside, fatty acid soaps, polymeric o/w emulsifiers, or any combination thereof.

16. The method of claim 12 , further comprising evaporating or vaporizing the hydrophobic volatile solvent.

17. The method of claim 12 , where the method provides a homogenous peak-and-valley pattern combined with an inter-peak size in the order of magnitude of 1 micron as measured by scanning electron microscopy.

18. The composition of claim 1 , where the composition provides a homogenous peak-and-valley pattern combined with an inter-peak size in the order of magnitude of 1 micron as measured by scanning electron microscopy after coating the composition on a collagen sheet and allowing the composition to dry.