NZ708493B2 - Compositions for depositing agents using highly volatile silicone solvents - Google Patents

Abstract

Disclosed herein composition comprising a skin conditioner/protectant, a highly volatile silicone solvent, and a polydimethylsiloxane having a viscosity of 50,000 cSt or greater, wherein said composition is substantially free of water, and wherein the composition does not comprise a germicide selected from the group alkyl quaternary ammonium germicides, lauric acid and undecylenic acid. Also disclosed are methods of application of the compositions to the skin. ed from the group alkyl quaternary ammonium germicides, lauric acid and undecylenic acid. Also disclosed are methods of application of the compositions to the skin.

Description

“COMPOSITIONS FOR DEPOSITING AGENTS USING HIGHLY VOLATILE SILICONE SOLVENTS Field of the Invention The invention s to the field of quickly and efficiently depositing agents, and films containing agents onto skin and other biological surfaces using highly volatile silicone compositions, which compositions are capable of depositing a variety of such agents, including germicidal/antimicrobial/sanitizing agents, skin conditioning and/or protective agents, een agents, and others. ularly, the invention s to such novel compositions, and with additional optional ingredients such as fragrances, colorants, and the like.

Background of the Invention The vehicles for application of materials to skin overwhelmingly tend to be in the form of aqueous-based systems. In such systems the materials to be applied are either in solution or suspension and can be thickened to create gels, lotions, and creams. Although water is volatile, it takes considerable time to evaporate, especially for creams. Such s-based systems require the use of vatives and can require considerable time to “rub-in”. The least common application system for skin is an ointment or paste, which is messy and leaves a residual layer of viscous, tacky material. There is a need to deliver materials to skin in such a way as to avoid preservatives, odors (such as alcohols), and the potential for cooling, burning, and stinging (such as is found with alcohols), substantially free of water. There is also a need to complete the ation process in a short time, such as in a few seconds, and to apply materials in such a way as to leave the skin feeling smooth and not tacky.

Sanitizer products are known in the art which sanitize skin and a y of surfaces to render them germ-free. Germicidal ts range from spray ons to bactericidal hand soaps. These products evidence the desire of people to maintain germ-free environments, minimizing exposure to harmful bacteria and other rganisms, by depositing chemicals on surfaces which kill such organisms. In addition to the desire to sanitize such surfaces as kitchen counters, bathroom sinks, toilet seats, and the like, it would also be desirable to retain the germicidal chemical on the surface to maintain sanitizing character to the surface for an extended period of time. There are us products (see for e http://www.artandopinion.com/2007_v6_n6/glaser-triclosan.htm) that contain the chemical triclosan, and agents such as tea tree oil or benzalkonium chloride, which are known to kill microorganisms. Perhaps the most common surface sanitizer is one that contains l in a gel or spray formulation. Alcohol-based products tend to dry the skin, they can burn and sting, and they do not retain antimicrobial ty.

These and other products also require considerable time for “rubbing in” or “drying” of the formulation.

There is a need in the art to deposit antimicrobial agents on surfaces not only to ze the surface of l microorganisms, but advantageously to retain such agent on the surface in order to provide sanitizing conditions to the surface for an extended period of time.

Skin conditioning agents are typically applied as lotions or creams, which are aqueous based and require vatives and “rub in” to evaporate the water. There is a need to apply conditioning materials to skin without water and which requires only a few seconds and can leave conditioning agents on skin. Likewise, there is a need to apply such agents as sunscreens in highly retentive films in a matter of seconds.

The art is in need of superior compositions, substantially free of water, and free of the problems of today’s known epositing compositions.

Summary of the Invention The disadvantages of both aqueous based systems and alcohol based systems can be avoided by using a nonaqueous delivery system based on highly le ne fluids (such as hexamethyldisiloxane and octamethyltrisiloxane) as the highly volatile carrier for a myriad of materials. Such systems can be used to deliver antimicrobial , skin conditioning agents, retentive polymers, skin feel agents, skin protective agents, and other materials in a fluid that spreads and evaporates in a few seconds.

Such systems can be sprayed onto skin without rubbing, which is a particular advantage for persons applying materials to legs and feet and where ng is undesirable. Elderly persons, for example, have particular difficulty bending over and rubbing topical products on their legs and feet, and these systems allow for the elderly to apply beneficial agents such as sanitizers and skin conditioning agents rapidly and without rubbing or having to reach their feet. In another aspect, a highly viscous and tacky polymer such as a high molecular weight ne polymer can be applied as a skin protectant for diaper rash prevention in a few seconds, leaving the skin smooth and non-tacky, as contrasted to the highly viscous and sticky pastes that are commonly used. Compositions of the invention can advantageously be d to broken skin such as abrasions without pain and touching. Agents can thereby be delivered to the skin in a few seconds leaving behind the agents or a thin film containing the d agent, from antimicrobial protection and skin ioning, to sunscreen protection and others.

One aspect of the invention provides delivery of sanitizer/antimicrobial ingredients to a surface with a system that does not contain high levels of alcohol, and which can be applied within 5 seconds or less. Furthermore this system can provide for the retention of the sanitizer as well as extended protection for the surface or skin, and it may contain other agents for conditioning and lubricating skin as well as other cosmetically d ingredients. Such a system may be a scous fluid that can be sprayed onto a e, that deposits within a few seconds a thin film of sanitizing formulation with or without rubbing. Thus it may easily and rapidly be used for application to feet and other surfaces which are hard to reach. The system can also be applied to a variety of surfaces, such as leather, wood, clothing, and the like, without the disadvantages associated with aqueous and alcohol-based products.

The present ion thereby overcomes the problems of known sanitizer itions. Particularly, the invention permits the delivery of sanitizer ingredients to a surface wherein the sanitizer composition avoids the disadvantages of known sanitizer compositions, (e.g., does not burn, sting, or dry the skin), and which can be d quickly (e.g., within 5 seconds or less) without the need to “rub in”.

Furthermore the compositions of the invention are capable of providing for the retention of the sanitizer on the surface (skin or other surfaces) and thereby maintain sanitizing protection for the skin and other surfaces.

The invention es compositions and s for delivering a sanitizing agent (e.g., benzalkonium chloride) to a surface to not only sanitize the surface but to provide sanitization for an extended period of time. The agent optionally may be applied in a thin film; more specifically, the invention es the ability to deliver such a film via a liquid that can be sprayed or placed on a surface by using a highly volatile solvent such that the film can be formed/spread quickly and conveniently.

For example, such a system can be d onto the skin, on household surfaces, or even animals (and either be spread or not) and it will dry within a few seconds to provide a thin film that is invisible but yet which can provide extended sanitization for several hours.

In one aspect, the invention provides a composition containing benzalkonium chloride ved in a highly volatile silicone liquid optionally containing a film- forming silicone polymer. Spraying a small quantity of such a sanitizer composition onto skin will deposit within a few seconds a thin film containing benzalkonium chloride such that the skin retains its smooth feel despite the fact that the thin sanitizing film remains thereon. This system provides a rapid and convenient way to provide immediate and long-lasting ization protection. Other suitable idal agents may be used, alone or in combination, such as alkyl quaternary um germicides (including honium de), lauric acid, undecylenic acid, and the like.

In other aspects of the invention, other optional desirable ingredients may be included and deposited in a like manner and in combination. Thus, in some aspects, the compositions of the ion may contain other additional ingredients such as skin conditioners, local anesthetics (e.g., ine and the like), sunscreens, insect repellents, fragrances, colorants, drugs, nutrients, and vitamins. Such a sanitizing composition is generally a non-viscous fluid that can be sprayed onto a surface, depositing within a few seconds a very thin film of sanitizing formulation without rubbing, although rubbing is optional. Thus it may easily and rapidly be used for application to feet and other hard to reach surfaces. The compositions of the invention may advantageously be applied to a wide variety of ordinary items, such as leather, wood, clothing, etc., without the problems associated with other aqueous and alcohol-based products.

In still other s of the ion, the composition does not include a sanitizing agent, but d contains such skin conditioners, local anesthetics (e.g., lidocaine and the like), sunscreens, insect repellents, fragrances, colorants, drugs, nts, and ns. Any combination of such ingredients may be aspects of the invention.

Thus, in one aspect, the invention provides a composition for depositing an agent to a surface, the composition comprising an ive amount of the agent, a highly volatile silicone t, and ally a film-forming polymer. The solvent may be selected from hexamethyl disiloxane and octamethyl trisiloxane, and others. The polymer may be a polydimethylsiloxane (50,000cSt or greater). The highly viscous silicone polymers are highly sticky and tacky but surprisingly when d according to the invention, the skin feels lubricated and the film is highly rententive and protective, particularly from water-soluble irritants. The agent may be selected from a germicide, a skin conditioner/protectant, and a sunscreen, or others.

In a germicidal aspect of the invention, the germicide may be selected from benzalkonium chloride, benzethonium de, lauric acid, and undecylenic acid.

In a skin conditioner/protectant aspect of the invention, the skin conditioner/protectant may be ed from Croda’s Liquid Medilan TM Ultra (lanolin oil (LO)), petrolatum (WP), Croda’s MedilanTM USP and Medilan Ultra-lanolins, Dow Corning® Soy wax, Dow Corning® Cosmetic wax, Shea butter, dodecamethylpentasiloxane (2.0cSt), Dow Corning® ST-Cyclomethicone5-NF, Dow Corning® 9040, and ST Elastomer 10.

In a sunscreen aspect of the invention, the sunscreen may be octyl salicylate.

In some aspects of the invention, optional ingredients may be present in the ition, such as those selected from a local anesthetic, an insect repellent, a fragrance, a colorant, a drug, and a vitamin.

In another aspect of the invention, the composition is in a onally useful form, such as a solution, a dispersion, a gel, and a semi-solid.

In another aspect, the invention includes a method of applying a composition of the invention by administering the composition to the desired surface, such as the skin.

In some aspects, the ition is in a liquid form in a spray bottle, while other forms are readily stered by direct application.

Such aspects of the invention are generally substantially free of water.

These and other objects are achieved through the t invention as exemplified and further described in the ed Description of the Invention below.

Detailed Description of the Invention In general, the compositions of the invention comprise an effective amount of an agent mixed with a highly volatile silicone t. Optionally, the compositions may further comprise a film-forming r. The solvent and polymer permit the application of the agent such that the solvent rapidly evaporates, leaving a thin film comprised of the polymer and the agent.

In one embodiment, for example, a sanitizing composition of the invention contains an effective amount of a germicidal agent in a highly le ne solvent. In its WO 77560 simplest form, the invention can be made by dissolving benzalkonium chloride, or other germicide, in a highly volatile silicone solvent such as hexamethyldisiloxane (HDS) and/or octamethyltrisiloxane. Typical levels of benzalkonium chloride are 0.13% or less. A small amount (less than about 3%) of a low lar weight alcohol such as isopropyl alcohol or ethanol may be used to help solubilize polar germicides like benzalkonium chloride.

In order to form an invisible but retentive film which maintains the germicidal agent on the surface, a film-forming polymer may be included in the composition. These include protecting/conditioning materials such as high viscosity methylsiloxanes (about 15,000cSt and r) -highly protective and retentive to skin. Certain skin conditioning agents that are somewhat retentive include Croda’s Liquid MedilanTM Ultra (lanolin oil (LO)), petrolatum (WP), Croda’s n TM USP and Medilan TM Ultra-lanolins, Dow Corning® Soy wax, and Dow Corning® Cosmetic wax. Certain “skin feel” agents are also ially retentive, such as moderately volatile silicones like dodecamethylpentasiloxane (2.0cSt), decamethyltetrasiloxane, and Dow Corning® ST-Cyclomethicone5-NF and gels such as Dow Corning® 9040 and ST Elastomer 10.

In other embodiments, the agent is a component such as local anesthetics, sunscreens, insect repellents, fragrances, colorants, drugs, nutrients, and vitamins.

Highly volatile ne solvents Many highly volatile silicone ts are suitable for use in the present invention.

Hexamethyldisiloxane is one preferred such t, as is octamethyltrisiloxane.

The compositions of the invention may have a single highly volatile silicone solvent, or may comprise a combination of more than one such solvents. orming polymers In some embodiments of the ion, it is desired to maintain the ty of the agent for an extended period of time following its application. In such cases, a film- forming polymer may be ed in the composition which, upon volatilization of the silicone solvent, (i.e., as the applied composition dries) forms a thin film, substantially invisible and substantially undetectable to touch, which film ns the still-active germicidal agent. Such film-forming polymers are known in the art, and include, but are not limited to, less volatile silicone compounds, such as viscous, or highly viscous silicone polymers, such as polydimethylsiloxanes (50,000cSt or greater).

The compositions of the invention may have a single film-forming polymer, or may comprise a combination of two or more such polymers.

Germicidal agents Those of skill in the art will appreciate that there are many germicidal agents suitable for use in the present invention. While many of the embodiments and examples recited herein use benzalkonium chloride as the germicidal agent, such agents include all alkyl quaternary ammonium germicides, benzethonium de, lauric acid, lenic acid, and others known to those of skill in the art. n quaternary ammonium germicides may require alcohol to be added to the composition in order to facilitate their lization in the highly volatile silicone.

Skin conditioners In other embodiments, the composition of the invention may comprise agents directed to skin care in l included in the formulation. Thus, for example, the composition may include such agents as protecting/conditioning materials such as super high viscosity polydimethylsiloxanes (50,000cSt-1,000,000cSt), Croda’s Liquid Medilan TM Ultra (lanolin oil (LO)), petrolatum (WP), Croda’s Medilan TM USP and Medilan Ultra-lanolins, Dow g® Soy wax, and Dow Corning® Cosmetic wax, Shea butter and “skin feel” agents such as low le silicones like dodecamethylpentasiloxane (2.0cSt) and Dow Corning® ST-Cyclomethicone5-NF and gels such as Dow Corning® 9040 and ST Elastomer 10. The compositions of the invention may have a single conditioner, or may comprise a combination of two or more such conditioners. The compositions may be solutions or dispersions, and the dispersions may be formed in a variety of ways including but not d to making a solution at higher temperatures followed by agitation/high shear mixing as the solution cools. Additionally one may employ methods such cavitation/microfluidization to create nano sized dispersions.

Other agents and optional components In some embodiments, optional components e local anesthetics (e.g., benzocaine), sunscreens (e.g., octyl late), insect repellents (e.g., N,N,-Diethyl- meta-toluamide ), fragrances (e.g., lavender oil), colorants (e.g., beet root extract), drugs (e.g, retinol), and vitamins (e.g., nicotinamide). The compositions of the invention may have a single such optional component, or may comprise a combination of two or more such optional components. Alternatively, in some embodiments, the ition of the invention may have these ise optional components as the desired agent itself. For example, in one embodiment of the invention, the composition is a highly volatile silicone solvent, a film-forming polymer, and a sunscreen agent. Such a ition of the invention provides rapid and efficient application of the sunscreen to the skin. In another embodiment, for example, a sunscreen agent is added to a skin-conditioning composition of the invention, whereby the composition comprises both a skin conditioner agent and a een agent. Those of skill in the art will appreciate the many varied combinations of agents and optional ingredients made possible by the invention.

Forms of the compositions of the ion In some embodiments, the composition of the invention is in the form of a liquid, generally applied in a spray bottle or other ation device. In other embodiments, the invention’s compositions may be formulated in a gel form, for direct application to the skin. Such gels may be prepared by using a gelling agent, such as Dow Corning® 9040 and ST Elastomer 10 added to the composition.

Uses of the compositions of the ion Uses of the highly adaptable compositions of the invention are limited only by the user’s imagination. Essentially any surface to be sanitized or coated is an riate surface for the compositions of the invention to be applied to. The embodiments of the invention with skin protectants and conditioners are highly suitable for use on skin surfaces, whether it be the hands, face, feet, etc. Such embodiments are also well-suited for other biological surfaces, but embodiments such as germicidal compositions can be applied to counters, doorknobs, leather goods, and the like; where the surface to be treated is not skin, embodiments of the invention without skin protectants and conditioners are quite le for extended sanitization.

Other embodiments, uses, and advantages of the present invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. The specification and examples should be considered ary only. The ed scope of the invention is only limited by the claims appended .

Examples The present invention will be further understood by reference to the following non- ng es.

Germicidal compositions Example 1: germicidal composition On a weight basis 0.13% benzalkonium chloride, 2.5% isopropyl alcohol, 1.3% polydimethyl siloxane (300,00008t), and 96.07% hexamethyldisiloxane were mixed to form a clear solution. This solution when sprayed onto skin or other surface can be spread and dried in a few seconds to leave a smooth film containing benzalkonium chloride.

Example 2: germicidal composition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 0.8% polydimethyl ne (300,00008t), 0.5% Dow Corning® 9040, and 97.32% hexamethyldisiloxane were mixed to form a clear solution. This on when sprayed onto skin or other surface can be spread and dried in a few seconds to leave a smooth film containing benzalkonium chloride.

Example 3: germicidal composition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 0.8% polydimethyl siloxane (300,00008t), 0.5% Dow g® 9040, and 97.32% hexamethyldisiloxane were mixed to form a clear solution. This solution when sprayed onto skin or other surface can be spread and dried in a few seconds to leave a smooth film containing konium chloride.

Example 4: germicidal composition On a weight basis 0.13% benzalkonium chloride, 2.5% isopropyl l, 1% Dow Corning® ic or Soy Wax, and 96.37% hexamethyldisiloxane were mixed to form a clear solution upon g. This mixture became turbid upon cooling to room ature and when sprayed onto skin or other surface can be spread and dried in a few seconds to leave a smooth film containing benzalkonium chloride.

Example 5: germicidal composition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 1.0% polydimethyl siloxane (300,00008t), 1.0% Croda Liquid Medilan TM Ultra, 3% Dow Corning® lomethicone 5-NF, and 93.62% hexamethyldisiloxane were mixed to form a clear solution. This solution when d onto skin or other surface can be spread and dried in a few seconds to leave a smooth film containing benzalkonium chloride.

Example 6: germicidal composition On a weight basis 0.13% konium chloride, 1.25% ethyl alcohol, 2.3% Croda Liquid Medilan TMUltra, 0.7% Dow Corning® 9040, 2% Dow Corning ST- Cyclomethicone 5-NF, and 93.62% hexamethyldisiloxane were mixed to form a clear solution. This slightly turbid mixture when d onto skin or other surface can be spread and dried in a few s to leave a smooth film containing benzalkonium chloride.

Example 7: germicidal composition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 1.0% Croda Liquid Medilan TMUltra, 4% Dow Corning® ST-Cyclomethicone 5-NF, and 93.62% hexylmethyldisiloxane were mixed to form a clear solution. This solution when sprayed onto skin or other e can be spread and dried in a few seconds to leave a smooth film containing benzalkonium chloride.

Example 8: germicidal composition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 2.0% Croda Liquid Medilan TMUltra, 3% Dow Corning® ST-Cyclomethicone 5-NF, and 93.62% hexylmethyldisiloxane were mixed to form a clear solution. This on when sprayed onto skin or other surface can be spread and dried in a few seconds to leave a smooth film containing benzalkonium de.

Example 9: germicidal composition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 3.0% Croda Liquid Medilan TM Ultra, 2% Dow Corning® ST-Cyclomethicone 5-NF, and 93.62% hexamethyldisiloxane were mixed to form a clear on. This solution when sprayed onto skin or other surface can be spread and dried in a few seconds to leave a smooth film containing benzalkonium chloride. e 10: germicidal composition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 2.0% Croda Liquid Medilan a, 3% octamethyltrisiloxane, and 93.62% hexamethyldisiloxane were mixed to form a clear solution. This solution when sprayed onto skin or other surface can be spread and dried in a few seconds to leave a smooth film containing benzalkonium chloride.

Example 11. : germicidal composition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 5% polydimethyl siloxane (300,000cSt), 0.2% lidocaine, and 93.42% hexamethyldisiloxane were mixed to form a clear solution. This solution can be sprayed onto a light wound or abrasion to prevent infection, control pain, and provide a protective coating. e 12: germicidal composition On a weight basis 0.13% benzalkonium de, 2.5% isopropyl alcohol, 1.3% polydimethyl siloxane (300,000cSt), 0.2% lidocaine, and 95.87% hexamethyldisiloxane were mixed to form a clear solution. This solution can be sprayed onto a light would or abrasion to prevent infection, control pain, and provide a protective g.

Example 13: germicidal ition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 0.2% lidocaine, and 98.42% hexamethyldisiloxane were mixed to form a clear solution.

This solution can be sprayed onto a light wound or abrasion to t infection, control pain, and provide a tive coating.

Example 14: germicidal composition WO 77560 On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, and 98.62% hexamethyldisiloxane were mixed to form a clear solution. This solution can be sprayed onto a surface or wound where no residue is desired. Such an example would be for example to prevent infection in animal ears.

Example 15: germicidal composition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 2.0% Croda Liquid Medilan TMUltra, 3.0% octamethylcyclotetrasiloxane, and 93.62% octamethyltrisiloxane were mixed to form a clear solution. This solution when d onto skin or other surface can be spread and dried in a few seconds to leave a smooth film ning benzalkonium chloride.

Example 16: germicidal composition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 2.0% Croda Liqiud Medilan TM Ultra, 3.0% decamethylcyclopentasiloxane, and 93.62% hexamethyldisiloxane were mixed to form a clear solution. This solution when sprayed onto skin or other surface can be spread and dried in a few seconds to leave a smooth film ning benzalkonium chloride.

Example 17: germicidal composition On a weight basis 0.13% benzalkonium chloride, 1.25% ethyl alcohol, 2.0% Croda Liquid Medilan TMUltra, 3.0% octamethylcyclotetrasiloxane, 30% octamethyltrisiloxane, and 63.62% hexamethlydisiloxane were mixed to form a clear solution. This on when sprayed onto skin or other surface can be spread and dried in a few seconds to leave a smooth film containing benzalkonium de.

Nongermicidal compositions Skin conditioning and moisturizing, skin protectant, and wound g compositions without antimicrobial agents are shown in the ing example compositions, which do not contain water, do not burn or sting, can be sprayed on or applied by gentle WO 77560 2012/042993 rubbing, and can be used on the face as well. They leave the skin with a very smooth and icky feel.

Example 18: skin conditioning compositions The following dispersions of solid moisturizers in the highly volatile hexamethyldisiloxane were obtained by heating all ingredients till a clear solution was obtained and then gradual cooling with us shaking as the dispersion forms: 18.1) By weight 10% Dow Corning® O Soy Wax and 90% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity sion for rapid and even application to skin. 18.1a) By weight 10% Dow Corning® ST-Wax30 and 90% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity sion for rapid and even application to skin. 18.1b) By weight 10% Medilan TM Ultra Lanolin and 90% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity dispersion for rapid and even application to skin. 18.2) By weight 20% Dow Corning® ST-Wax30 and 80% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity dispersion for rapid and even application to skin. 18.2a) By weight 20% Dow Corning® HY-305O Soy Wax and 80% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity dispersion for rapid and even application to skin. 18.2b) By weight 20% Medilan TM Ultra Lanolin and 80% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity dispersion for rapid and even application to skin. 18.3) By weight 20% Dow g® 30, 10% Dow Corning® ST- Elastomer 10, and 70% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity dispersion for rapid and even application to skin. 18.3a) By weight 20% Dow Corning® HY-3050 Soy Wax, 10% Dow Corning® ST-Elastomer 10, and 70% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity dispersion for rapid and even application to skin. 18.3b) By weight 20% n TM Ultra Lanolin, 10% Dow Corning® ST- mer 10, and 70% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity dispersion for rapid and even application to skin. 18.4) By weight 35% Medilan TM Ultra Lanolin, 20% Dow Corning® ST- Elastomer 10, and 45% hexamethyldisiloxane were mixed and processed as described above to provide a medium viscosity dispersion for rapid and even application to skin. 18.5) By weight 45% n TM Ultra n, 20% Dow Corning® ST- Elastomer 10, and 35% hexamethyldisiloxane were mixed and processed as bed above to provide a viscous dispersion for rapid and even application to skin. 18.6) By weight 20% Medilan TM Ultra Lanolin, 20% Dow Corning® ST- Cyclomethicone 5-NF, and 60% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity dispersion for rapid and even application to skin. 18.7) By weight 25% Liquid Medilan TM Ultra Lanolin, 20% Dow Corning® ST- Cyclomethicone 5-NF, 2.5% beeswax, and 52.5% hexamethyldisiloxane were mixed and sed as described above to provide a low viscosity dispersion for rapid and even application to skin. 18.8) By weight 25% Liquid Medilan TM Ultra n, 20% Dow Corning® ST- Cyclomethicone 5-NF, 2.5% Dow Corning® ST-Wax30, and 52.5% hexamethyldisiloxane were mixed and processed as bed above to provide a low viscosity dispersion for rapid and even ation to skin. 18.9) By weight 25% Liquid Medilan TM Ultra Lanolin, 20% Dow Corning® ST- Cyclomethicone 5-NF, Dow Corning® HY-3050 Soy Wax, and 52.5% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity dispersion for rapid and even application to skin. 18.10) By weight 25% Liquid Medilan TM Ultra Lanolin, 20% Dow Corning® ST-Cyclomethicone 5-NF, 5% Dow Corning® ST-Wax30, and 50% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity dispersion for rapid and even application to skin.

Example 19: skin conditioning compositions with additional ingredients 19.1) By weight 32% Liquid Medilan TM Ultra Lanolin, 3%Vitamin E, and 65% hexamethyldisiloxane were dissolved together to provide a low viscosity solution for rapid and even application to skin. 19.2) By weight 35% Liquid Medilan TM Ultra n, 20% Dow Corning® ST- Elastomer 10, and 45% hexamethyldisiloxane were dissolved er to provide a low viscosity hazy solution for rapid and even application to skin. (This product was given to a person who works in construction with ng dry hands with band aids, and after one week the hands were markedly improved with only two ations per day) 19.3) By weight 22% Liquid Medilan TM Ultra Lanolin, 3%Vitamin E, 10% Dow Corning® ST-Elastomer 10, and 65% hexamethyldisiloxane were dissolved together to provide a low viscosity hazy solution for rapid and even application to skin. 19.4) By weight 20% Liquid Medilan TM Ultra Lanolin, 20% Dow Corning® ST- Cyclomethicone 5-NF, and 60% hexamethyldisiloxane were mixed and processed as described above to provide a low viscosity solution for rapid and even application to skin. 19.5) By weight 32% Liquid Medilan TM Ultra Lanolin, 3%Vitamin E, 20% Dow Corning® ST-Cyclomethicone 5-NF, and 45% thyldisiloxane were mixed and processed as described above to provide a medium viscosity on for rapid and even application to skin. 19.6) By weight 35% Liquid Medilan TM Ultra Lanolin, 20% Dow Corning® ST- Cyclomethicone 5-NF, and 45% hexamethyldisiloxane were mixed and processed as described above to e a medium viscosity solution for rapid and even application to skin.

Example 18a): Skin protectant compositions 19a.1) By weight 5% polydimethylsiloxane (300,000cSt) and 95% hexamethyldisiloxane were mixed to give a clear solution that can be rapidly and evenly applied to lubricate and protect skin. 19a.2) By weight 5% polydimethylsiloxane (1 ,000,000cSt) and 95% thyldisiloxane were mixed to give a clear solution that can be rapidly and evenly applied to ate and t skin. 19a.3) By weight 10% polydimethylsiloxane (300,00008t) and 90% hexamethyldisiloxane were mixed to give a clear solution that can be y and evenly applied to lubricate and protect skin. 19a.4) By weight 10% polydimethylsiloxane (1 ,000,00008t) and 90% hexamethyldisiloxane were mixed to give a clear solution that can be rapidly and evenly applied to lubricate and protect skin.

Example 20: sunscreen compositions .1) Dissolve 5 grams octyl salicylate in 90 grams hexmethyldisiloxane and add 5 grams polydimethylsiloxane 00CSt). Solution/mixture can be sprayed onto surface leaving a smooth, retentive film. .2) Dissolve 10 grams octyl salicylate in 80 grams hexmethyldisiloxane and add 10 grams polydimethylsiloxane (300,000CSt). Solution/mixture can be sprayed onto surface leaving a smooth, retentive film. .3) Dissolve 5 grams octyl salicylate in 87 grams hexmethyldisiloxane, 3 grams cylcomethicone and add 5 grams polydimethylsiloxane 00CSt). on/mixture can be sprayed onto surface leaving a smooth, retentive film. .4) Dissolve 3 grams avobenzone in 92 grams hexmethyldisiloxane and add 5 grams polydimethylsiloxane (300,000CSt). Solution/mixture can be sprayed onto surface leaving a smooth, ive film. .5) Dissolve 5 grams octyl methoxycinnamate in 90grams hexmethyldisiloxane and add 5% polydimethylsiloxane (300,000CSt).

Solution/mixture can be sprayed onto surface leaving a smooth, ive film. .6) Dissolve 7.5 grams octyl methoxycinnamatein 84.5 grams hyldisiloxane and add 8 grams polydimethylsiloxane 00CSt).

Solution/mixture can be sprayed onto surface leaving a smooth, retentive film.

The present invention is not to be limited in scope by the specific embodiments described above, which are intended as illustrations of aspects of the invention.

Functionally equivalent methods and components are within the scope of the invention. lndeed, s modifications of the invention, in addition to those shown and described herein, will become apparent to those skilled in the art from the foregoing description. Such modifications are intended to fall within the scope of the appended claims. All cited nces are hereby incorporated by reference.

Claims (8)

We claim:

1. A composition comprising a skin conditioner/protectant, a highly le silicone solvent, and a polydimethylsiloxane having a viscosity of 50,000 cSt or greater, wherein said composition is substantially free of water, and wherein the ition does not comprise a germicide selected from the group alkyl quaternary um germicides, lauric acid and undecylenic acid.

2. The composition of claim 1, n the highly volatile silicone solvent is hexamethyl disiloxane, octamethyltrisiloxane or a combination thereof.

3. The composition of claim 1 or 2, wherein the composition further comprises a sunscreen.

4. The composition of any one of claims 1 to 3, wherein the skin conditioner/protectant is selected from the group consisting of n oil, petrolatum, lanolin, soy wax, Shea butter, dodecamethylpentasiloxane having a viscosity of 2.0 cSt, and decamethylcyclopentasiloxane.

5. The composition of claim 3, wherein the een is octyl salicylate.

6. The composition of any one of claims 1 to 5, further comprising at least one al ingredient selected from the group consisting of a local anesthetic, an insect repellent, a fragrance, a colorant, a drug, and a vitamin.

7. The composition of any one of claims 1 to 6, wherein the composition is in a form selected from the group consisting of a solution, a dispersion, a gel, and a semisolid.

8. Use of the composition of any one of claims 1 to 7 in the manufacture of a medicament for conditioning or protecting skin.