AU2017100701A4 - An Aerosol Composition and Application Thereof - Google Patents

Abstract

Abstract An aerosol composition for use in pre-hydrating skin, the composition comprising: a first group of plant extracts, a second group of essential oils, a hydrosol, polyoxyethylene (20) sorbitan monolaurate, sorbitol, sodium pyrrolidone carboxylic acid, glycerine, sodium hydroxy methyl glycinate, citric acid, and an aqueous solvent.

Description

2017100701 13 Jun 2017 -1-

AUSTRALIA PATENTS ACT 1990

INNOVATION SPECIFICATION FOR THE INVENTION ENTITLED :-

An Aerosol Composition and Application Thereof

The invention is described in the following statement:- -2- 2017100701 13 Jun 2017

AN AEROSOL COMPOSITION AND APPLICATION THEREOF TECHNICAL FIELD

[0001] The present invention relates to an aerosol composition adapted for use on skin or as a cosmetic preparation. More particularly, the present disclosure may relate to an aerosol composition for increasing the rate of hydration of skin. The present invention may include an application derived from the aerosol composition.

BACKGROUND

[0002] Presently, it is still usual for consumers to apply lotions or moisturising creams directly to areas of relatively dry skin to improve the condition of the skin. Therefore, many compositions relating to moisturising creams have been developed to add moisture back into the skin and/or inhibit trans-epidermal water loss after applying to the skin. However, these compositions may have several major disadvantages.

[0003] One of the major disadvantages of the previous compositions may be insufficient moisture being added back into the skin. When applying the moisturising cream to the area of relatively dry skin, it may provide a pleasant tactile experience, in which the pleasantness may be attributed to the lubricity of moisturisers. However, dry skin may not hydrate well and some moisturising compositions may not put back enough moisture into the skin at a relatively fast rate.

[0004] More recently, consumers may use specialty lotions and/or creams which are formulated to treat dry skin conditions. A previous example of this type of formulation is disclosed in US Patent No. 4,389,418, which uses petrolatum or mineral oil as an occlusive emollient agent, and glycerine as a humectant. Formulations involving the use of a combination of emollients and humectants are well known to increase the overall water content in the skin, in which the emollient reduces moisture loss from the skin by covering the outer layer of the skin with a water-impenetrable barrier while the humectant attracts and holds water to the outside surface of the skin. Other formulations currently on the market use increased amounts of glycerine to enhance the skin hydration properties. 2017100701 13 Jun 2017 -3- [0005] Another example of a type of formulation is disclosed in Published PCT Application No. WO 2015164291, which uses a combination of a humectant, lipid bilayer structurant and a chaotropic agent. Formulations involving the use of chaotropic agents can denature the outermost cross-linked protein layer of the skin, thereby increasing the amount of humectant and lipid bilayer structurant entering the outer layer of the skin. Following the denaturation process, the humectant then binds with water molecules and the lipid bilayer structurant reconnects the lipid bilayers of the outer layer of the skin, thereby preventing water loss.

[0006] While the above formulations may hydrate the skin, they may not provide efficient hydration to chronically dry skin and may not restore the skin’s water balance. There is a long felt need for an aerosol composition for pre-hydrating the skin before applying a moisturiser to enhance the absorption of water to skin.

[0007] Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of common general knowledge in the field.

SUMMARY

[0008] PROBLEMS TO BE SOLVED

[0009] It may be advantageous to provide a composition that is aerosolised for use on skin.

[0010] It may be an advantage to provide efficient hydration properties to the skin.

[0011] It may be an advantage to provide a variation in the aerosol composition of the individual ingredients for varying the desirable properties to the skin when applied.

[0012] It may be an advantage to provide an aerosol composition with variable hydration properties for use on varying degrees of skin dryness. 2017100701 13 Jun 2017 -4- [0013] It may be an advantage to provide an aerosol composition with active ingredients targeting at least one from the following group of skin issues: lack of hydration, lack of oxygenation, free radical damage, and diminished collagen.

[0014] It may be an advantage to provide an aerosol composition with a pH range compatible for use on healthy skin.

[0015] It is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative.

[0016] MEANS FOR SOLVING THE PROBLEM

[0017] A first aspect of the present invention may relate to an aerosol composition for use in pre-hydrating skin, the composition comprising a first group of plant extracts, a second group of essential oils, a hydrosol, polyoxyethylene (20) sorbitan monolaurate, sorbitol, sodium pyrrolidone carboxylic acid, glycerine, sodium hydroxy methyl glycinate, citric acid, and an aqueous solvent.

[0018] Preferably, the first group of plant extracts consists of: Centipeda Cunninghamii extract, Vitis Vinifera extract, Undaria Pinnafida extract, and Lentinus Edodes extract.

[0019] Preferably, the second group of essential oils consists of: Agonis Fragrans oil, Santalum Spicatum oil.

[0020] Preferably, the hydrosol is Agonis Fragrans hydrosol.

[0021] Preferably, the aqueous solvent is purified water.

[0022] Preferably, the application of the aerosol composition to skin, causes an increase in the rate of hydration for skin. 2017100701 13 Jun 2017 -5- [0023] Preferably, the application of the aerosol composition to skin is applied prior to an application of a hydrophobic cosmetic product to skin.

[0024] Preferably, the hydrophobic cosmetic product is hygroscopic.

[0025] In the context of the present invention, the words “comprise”, “comprising” and the like are to be construed in their inclusive, as opposed to their exclusive, sense, that is in the sense of “including, but not limited to”.

[0026] The invention is to be interpreted with reference to the at least one of the technical problems described or affiliated with the background art. The present aims to solve or ameliorate at least one of the technical problems and this may result in one or more advantageous effects as defined by this specification and described in detail with reference to the preferred embodiments of the present invention.

DESCRIPTION OF THE INVENTION

[0027] Preferred embodiments of the invention will now be described with reference to the non-limiting examples.

[0028] In a first preferred embodiment of the present invention, there may be provided an aerosol composition for use on skin, more particularly, to an area of skin that is relatively dry. The composition may comprise a combination or first group of plant extracts, a combination or second group of essential oils, a hydrosol, polyoxyethylene (20) sorbitan monolaurate, sorbitol, sodium pyrrolidone carboxylic acid, glycerine, sodium hydroxy methyl glycinate, citric acid, and an aqueous solvent.

[0029] The combination of plant extracts may consist of: Centipeda Cunninghamii extract, Vitis Vinifera extract, Undaria Pinnafida extract, and Lentinus Edodes extract; and the combination of essential oils may consist of: Agonis Fragrans oil, Santalum Spicatum oil; and the hydrosol may be Agonis Fragrans hydrosol. The combination of 2017100701 13 Jun 2017 -6- plant extracts and the combination of essential oils may provide a synergistic blend that may directly target the causes of skin ageing and/or damaged skin. Aged skin and/or damaged skin may not absorb and/or retain moisture well. It may be appreciated that other ingredients included in the composition may not directly contribute to the increased rate of hydration of skin alone but also promote the skin health and/or reduce the rate of damage of Aged skin. As such, the promotion of skin health may be an important factor for facilitating moisture retention in skin and may be interrelated in addressing the lack of hydration issue for skin.

[0030] The ingredients used in first and second group may have a synergistic effect in combination, wherein the combination of the ingredients is greater than the effect of each individual ingredient in isolation.

[0031] By having ingredients in the aerosol composition also promoting skin health, the aged skin may appear and/or feel relatively youthful. That is, the aged skin may not function like its real age, and the relatively youthful aged skin may have similar efficient maintenance properties compared to younger skin. By virtue of the capabilities of younger skin, relatively younger skin may absorb and/or retain water and/or moisture more efficiently than aged skin. Therefore, the ingredients in the composition promoting skin health may indirectly address the lack of hydration for skin.

[0032] The causes of skin ageing may be from a combination of at least one of the following skin issues: lack of hydration, lack of oxygenation, free radical damage, and diminished collagen. The lack of hydration of skin may feel tight, and may look dull, even after the dehydrated skin may have been moisturised. The hydration may be referred to as the water content of the consumer’s skin, in particular the epidermis, which is the outer layer of the skin; while the moisturisation may be referred to as the oil balance of your skin. In relation to young and healthy skin, the sebaceous glands produce sufficient sebum, which is a type of oil, to maintain a healthy oil balance and naturally good moisturisation. When skin cannot produce sufficient sebum, which may be due to skin ageing and/or environmental factors, the skin may be losing more water than it can -7- 2017100701 13 Jun 2017 naturally replenish. As such, the application of moisturisers may help address the lack of hydration by creating an oil-based barrier that may preserve water in your skin.

[0033] Moisturisers may also aid re-hydrating the skin due to the content of moisturisers containing water. For some dry skins, a moisturiser may not be enough to restore the skin’s natural water balance from the water content in the moisturiser. As such, the application of the aerosol composition to the dry skin may replace water that have been lost. The extra moisture may be supplemented with the application of a cosmetic product to the skin. The cosmetic product may be a hydrophobic cosmetic product, in which the hydrophobic cosmetic product may be a moisturiser. This type of moisturiser may consist of a hygroscopic component incorporated with some hydrophobic components. This type of hygroscopic moisturiser when applied after the application of the aerosol composition to the skin may attract moisture to the skin whilst the moisturiser may provide a partial protective barrier for the skin.

[0034] The ingredients in the aerosol composition that may target the lack of hydration are Undaria Pinnatifida extract and Lentinus Edodes extract. The ingredients in Undaria Pinnatifida extract and/or Lentinus Edodes extract may act as a natural humectant agent in the composition, and each of the extracts may serve to retain and preserve moisture for the skin. Further to the ingredients in the Lentinus Edodes extract acting as a humectant agent in the composition, Lentinus Edodes extract may also provide anti-oxidative properties. The process of oxidation in the human body damages cell membranes and other structures. When oxygen is metabolised, it creates free radicals that may cause damage to the skin by stealing electrons from other skin cell molecules. Having an additional anti-oxidative component in the composition may be desirable for reducing oxidative stress for skin, and as such, reduces the effects of skin damage. Further ingredients in the aerosol composition that also target free radical damage to skin may be from the ingredients present in the Centipeda Cunninghamii extract and in the Agonis Fragrans oil.

[0035] Ingredients present in the aerosol composition that may promote the absorption and retention of oxygen for skin are Vitis Vinifera extract and Lentinus Edodes extract. -8- 2017100701 13 Jun 2017

Oxygen may be essential to the optimal function of living skin cells. With age, the skin may lose its ability to retain and utilise oxygen for normal metabolic processes. These normal metabolic processes may include the repair and regeneration of collagen and elastin tissue that provide the skin’s structural integrity. The ingredients present in the Yitis Vinifera extract and Lentinus Edodes extract may enhance the available oxygen going to the skin, and in so doing, the ingredient may stimulate good cell turnover, boosting circulation, and may leave the skin hydrated and revitalised.

[0036] Ingredients present in the aerosol composition that may promote collagen production for skin are Santalum Spicatum oil and Agonis Fragrans oil. Collagen is a fibrous protein which may be responsible for maintaining the skin’s firmness. Collagen may be located in the dermis, the middle layer of the skin, below the epidermis, which may be the skin’s structural layer. However, as people age, the natural collagen production is impaired and collagen fibres may lose their elasticity. By losing their elasticity, the skin may become more brittle, rigid, and may have a high likelihood to breakage. This may lead to a loss of skin suppleness, decreased skin elasticity, sagging, and wrinkles as well as the possible change to the colour and texture of the skin.

[0037] When the combination of plant extracts and the combination of essential oils are applied to the skin, those plant extracts and essential oils may synergistically work to address the following four possible interrelated causes of skin ageing: lack of hydration, lack of oxygenation, oxidative stress, and diminished collagen production for skin. Those causes of skin ageing may be interrelated and all of the four causes may need to be addressed to promote the hydration of skin rather than addressing the lack of hydration cause alone.

[0038] A plant extract may be a collection of active substances with desirable properties that may have been removed from the tissue of a plant by the treatment with a solvent.

An essential oil may be a concentrated hydrophobic liquid containing volatile aroma compounds from plants or the oil of the plant from which they were extracted. The essential oil may also have a collection of active substances with desirable properties. With respect to the plant extracts and/or essential oils, the desirable properties of the 2017100701 13 Jun 2017 -9- collection of active substances may be in relation to the targeting at least one of the four causes of skin ageing. The ingredients in the Agonis Fragrans oil may be an essential oil that may have hydrating properties. The ingredients in the Centipeda Cunninghamii extract may be a group of active substances with anti-inflammatory properties and antibacterial properties. The ingredients in the Lentinus Edodes extract may be a group of active substances with anti-allegenic, anti-inflammatory, anti-bacterial and topically active polysaccharides. The ingredients in the Santalum Spicatum oil may be a group of active substances with anti-oxidant activity. The ingredients in the Undaria Pinnatifida extract may be a group of active substances with anti-hyaluronidase, anti-elastase activity for the promotion of fibroblast collagen production and processing. The ingredients in the Vitis Vinifera extract may be a group of active substances with anti-oxidant properties as well as emollient and stabilising properties.

[0039] In the aerosol composition, the aqueous solvent may be water, which has been purified such that the purified water is suitable for use in cosmetics and/or applied to the skin. Preferably, the purified water may be at a cosmetic grade. The purified water used in the aerosol composition may be from one of the following: distilled water, deionized water, demineralized water, and ultra pure water. It would also be appreciated that a combination of different purified water may be used in the composition. There is also a Hydrosol present in the composition. The hydrosols may be pure distillate waters, which are the natural “plant waters” or “floral waters” that may be a product from the distillation of essential oils, in which the essential oils may be obtained from a plant. The hydrosol used in this composition consists of Agonis Fragrans hydrosol. Depending on the botanical and the season harvested, the hydrosols may contain varying amounts of essential oil. After applying the aerosol composition to the area of relatively dry skin, the purified water and/or hydrosol may be absorbed by the skin.

[0040] In an embodiment of the present disclosure, preferably the amount of sodium pyrrolidone carboxylic acid and the glycerine present in the composition may be varied to obtain the desired hydration properties. -10- 2017100701 13 Jun 2017 [0041] The aerosol composition according to the present disclosure may be generally suitable for topical application to the skin, and it may contain a physiologically acceptable medium, in which the medium may be compatible with the skin. The aerosol composition may have a pH range of pH 5 to 7, more preferably, the aerosol composition may be close to pH 5.5. The citric acid component in the composition may be varied to obtain the desired pH within the range of pH 5 to 7.

[0042] The ingredient polyoxyethylene (20) sorbitan monolaurate may function as a surfactant in the composition to break down the interface between water and oils. The breakdown of the water-oil interface may create a homogeneous composition such that the composition has the same uniform appearance and composition throughout. In addition to breaking down the water-oil interface, polyoxyethylene (20) sorbitan monolaurate may also assist in the spreading and wetting properties to skin.

[0043] The ingredient sorbitol may function as a skin conditioning agent and a humectant in the composition. Sorbitol may be poorly absorbed by the skin and may assist in reducing moisture loss from the skin once applied. Being a humectant, it is hygroscopic and may attract moisture from the air and may also contribute to hydrating the skin. For dry environmental conditions, it may not be preferable to have a high percentage by weight of the composition due to the possible dragging of moisture out of the skin. The amount of sorbitol may be varied in the composition depending on seasonal humidity levels.

[0044] The ingredient vegetable glycerine or glycerine obtained from vegetables, may also function as a humectant in the composition. Glycerine may also attract moisture from the air to the skin and may also leave the skin hydrated. Further, glycerine may increase the solubility of the combination of plant extracts and essential oils in the composition. As such, glycerine assists in increasing the absorption of the combination of plant extracts and essentials oils in the composition by the skin. The amount of vegetable glycerine may also be varied in the composition depending on the solubility of the plant extracts and essential oils. The amount of vegetable glycerine may also be varied in the composition depending on seasonal humidity levels. 2017100701 13 Jun 2017 -11- [0045] The ingredient sodium hydroxy methyl glycinate may function as an antibacterial and/or an antimycotic agent in the composition. Sodium hydroxy methyl glycinate may assist in preserving the composition from bacteria, fungi and yeast. The presence of sodium hydroxy methyl glycinate on the skin after the composition has been applied, may protect the skin from harmful bacteria or fungi present in the air when moisture from the air may have been attracted to the skin by humectants in the composition. By inhibiting a broad spectrum of harmful bacteria and fungi on the skin, sodium hydroxy methyl glycinate may assist in promoting skin health.

[0046] The application of the aerosol composition to skin may cause an increase in the rate of hydration for skin. Upon applying the aerosol composition to skin, the purified water and/or hydrosol may be absorbed by the skin. The skin may further absorb water when the consumer applies of a hygroscopic hydrophobic cosmetic product such as a moisturiser. It may be appreciated that any type of moisturiser can be used. When the moisturiser is applied, the moisturiser may act as a partial barrier for the skin to reduce moisture loss from the skin.

[0047] The first preferred embodiment of the present invention may be also applied to the use of the composition for the preparation of a medicament for the treatment of dry skin.

[0048] Although the invention has been described with reference to specific examples, it will be appreciated by those skilled in the art that the invention may be embodied in many other forms, in keeping with the broad principles and the spirit of the invention described herein.

[0049] The present invention and the described preferred embodiments specifically include at least one feature that is industrial applicable.

Claims (5)

1. THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:

   1. An aerosol composition for use in pre-hydrating skin, the composition comprising: a first group of plant extracts, a second group of essential oils, a hydrosol, polyoxyethylene (20) sorbitan monolaurate, sorbitol, sodium pyrrolidone carboxylic acid, glycerine, sodium hydroxy methyl glycinate, citric acid, and an aqueous solvent.
2. 2. The aerosol composition according to claim 1, wherein the first group consists of: Centipeda Cunninghamii extract, Vitis Vinifera extract, Undaria Pinnafida extract, and Lentinus Edodes extract; and wherein the second group consists of: Agonis Fragrans oil, Santalum Spicatum oil, and wherein the hydrosol is Agonis Fragrans hydrosol; and wherein the aqueous solvent is purified water.
3. 3. The aerosol composition according to claim 1 or claim 2, wherein an application of the aerosol composition to skin, causes an increase in the rate of hydration for skin.
4. 4. The aerosol composition according to claim 3, wherein the application of the aerosol composition to skin is applied prior to an application of a hydrophobic cosmetic product to skin.
5. 5. The aerosol composition according to claim 4, wherein the hydrophobic cosmetic product is hygroscopic.