Patent Application
20110097396
The invention relates to a capsule that can be applied topically, comprising an emulsion-based casing material and a filling material which contains a preparation having an abrasive effect.
The epidermis is composed of different types of cells: the germ layer (stratum germinativum), the granular layer (stratum granulosum) and the horny layer (stratum corneum). In the germ layer new cells are formed by division which migrate permanently to the skin's surface. On the way there, in the granular layer, they keratinize and decay. These decayed horny cells comprise as horny columns most of the cells in the skin. Within 28 days the epidermis has renewed itself once. Usually the dead horny cells are detached gradually unnoticed and by themselves.
On very stressed body parts and/or body parts exposed to weather/environmental effects, such as, e.g., hands, feet, elbows, face or knees, as well as in the case of very dry skin, horny scales can accumulate increasingly, which do not detach by themselves and thus lead to unattractive, dull and even in part lacerated skin.
There are various ways of ridding the skin of these superfluous horny scales. On the one hand, there are various tools, such as pumice stones, washcloths or loofahs. On the other hand, it is widespread to rub the skin with loose granules, such as, e.g., sand, salt, sugar or wheat germ. Furthermore, there are cosmetic preparations, such as wash peelings, which in most cases contain abrasive plastic particles. In order to be able to cleanse the skin, surfactants are added to most wash peelings. However, these surfactants remove not only the plastic particles, but also endogenous lipids that are located on the skin and thus after use lead often to a tightening and itching of the skin.
The tightening and itchy skin feeling can be avoided by adding oils or lipids to the cosmetic peeling preparation. One example of particularly regreasing peeling preparations are oil/salt mixtures and wash emulsions.
Salt slurries in oil for use as a peeling preparation have been known to the consumer for some time (example: “Groβmutters Hausmittel, neu entdeckt,”© 2000 Reader's Digest, Verlag Das Beste GmbH, Stuttgart, Zürich, Vienna). Mixtures of this type are likewise commercially available as cosmetic finished products (example: Alessandro® Hands! Up Magic Manicure®). The fine salt particles in these mixtures over time settle to the bottom of the container and form a visible salt layer there. The mixing of the two phases can be very time-consuming and strength-consuming depending on the size of particles of the salt used. It is often not possible to achieve a uniform blending of the product, which means that the oil is used up more quickly. A virtually dry and solid salt layer on the bottom of the container is left behind, which can no longer be used.
Approaches to rectify this situation are presented in documents WO 00/04867 and U.S. Pat. No. 5,866,145 concerning emulsion capsules.
It would be desirable to provide a product that renders possible both a skin peeling and a skin care in one step.
The invention therefore comprises a capsule that can be topically applied and rubbed onto the skin, comprising an emulsion-based casing material and a filling material which contains a preparation which has an abrasive effect and comprises one or more abrasive peeling agents.
The peeling agents are contained either in
The casing material surrounds the filling material and comprises one or more waxes, which are solid below 40° C. The exterior casing thus receives its strength for pouring, removing and a corresponding storage stability.
As preferred waxes are selected Synwax 80, a synthetic wax, cetyl palmitate, C20-40 alkyl stearate, cera alba, beeswax, sunflower seed wax (helianthus annuus seed wax), C18-36 acid triglaceride, cera microcristallina, paraffin wax, candelilla cera and/or cetyl ricinoleate.
The topically applicable capsule is a capsule that at room temperature is solid, semi-solid or stable in form, which can thus be portioned and handled separately.
Many terms such as “balls,” “capsules,” “capsule-form preparation” or “beads” can basically be used to describe the capsules according to the invention, even if different meanings are assigned to these terms under some circumstances. In particular the meaning of the term “capsule” is here not limited to the precisely defined forms, production methods, contents and application possibilities of the pharmaceutical preparations also called “capsules,” but includes them. In general according to the invention a capsule is an object that is, for example, approximately round or ellipsoid, and clearly distinguishable from its surroundings, which with light pressure and, for example, by grasping during removal from a packaging, changes its shape only insignificantly.
The capsule-form preparations according to the invention can have any shape, but preferably they are spherical with a volume of 0.1 to 20 ml.
The capsules according to the invention have a size, i.e., average diameter, of 3, preferably 5, to 40 mm. The capsules can thus be handled and applied individually.
The capsule-form preparations according to the invention are stable in form as dragées, capsules, balls or hollow balls during storage and removal.
According to the invention, the capsule casing, the casing material, is constituted by an emulsion. Due to the fact that the casing material is present on an emulsion basis, when the capsule according to the invention is rubbed on the skin a distribution occurs such as that to which the user is accustomed with emulsion-based creams.
The filling material can likewise be formulated as emulsion c.). The filling is then advantageously an O/W, W/O, W/O/W emulsion, a microemulsion or a nano-emulsion. The emulsion filling material can comprise all of the substances and preparations known in cosmetics, in particular O/W or W/O/W, W/O emulsions in the form of creams are advantageous.
The emulsion of the casing differs from the emulsion of the filling in that the emulsion of the filling can contain surfactants and/or active ingredients. Furthermore, the emulsion of the filling can be significantly less viscous.
The advantages of the emulsion-based capsule casing in combination with the filling material according to the invention are:
The casing can be produced by known methods.
For example, hollow balls can be cast from melted casing material, which are filled with filling material through a hole in the wall of the ball. Subsequently the hole is closed by a plug of casing material.
Another possibility for production can be carried out by the so-called one-shot method. Casing material and filling material are thereby cast simultaneously. The casting machine meters both masses from the divided reservoir through a concentric ring nozzle into a blister form. First the casing mass starts via the annular gap and then the filling follows with a short delay via the inner nozzle. The finished capsule can thus be cast in one step. This method is the preferred production method according to the invention.
It is also possible to first cast half hollow balls, to then fill them, to match them and subsequently by thermal treatment to fuse the two hollow balls to one another. Furthermore, two hemispheres of this type can be produced, wherein one or both have a hole for subsequent filling, then are fused to form a hollow ball, and subsequently are filled through the filling hole, which is then closed as described above.
The peeling agents (peeling bodies/peeling particles) are preferably selected from the group polyethylene, common salt, sea salt, sodium carbonate, sodium bicarbonate, magnesium sulfate, magnesium chloride, sugar, alum clay, sand, plastic particles, pulverized or ground stones of e.g., walnut shells, apricot, peach or almond stones.
Further peeling agents are known and suitably selected from the group Himalaya salt, plastic particles of viscose, cellulose, polypropylene, polyester, polyethylene terephthalate (PET), polytetrafluoroethylene (PTFE), aramide, nylon, Kevlar, polyvinyl derivatives, polyurethanes, polyactid, polyhydroxyalkanoate, polycarbonate, polystyrene, cellulose ester and/or polyethylene as well as poorly soluble or insoluble crystals, such as, e.g., calcium sulfate, calcium carbonate, encapsulated or unencapsulated crystals such as, e.g., calcium chloride, potassium chloride, magnesium chloride, sugar, silicates such as, e.g., sea sand, alum clay, milk-of-lime, crushed or ground natural products such as, e.g., wheat, flaxseed, rice, corn, almonds, nuts, nutshells, pumpkin seeds, caraway seeds, crushed or ground natural sponges such as, e.g., sponge gourd, natural and synthetic waxes, such as, e.g., rice bran wax, carnauba wax, jojoba wax, beeswax.
Peeling or peeling treatment is a cosmetic treatment in which the surface layers of the skin are removed extensively.
In the case of surface peeling, the uppermost horny layer of the skin is removed mechanically or chemically. This treatment is called peeling colloquially, many providers refer to this method as microdermabrasion.
One or more of these peeling agents are now contained in
The oil phase or lipid phase a.) in which the peeling agents can be present in suspended or distributed form can be selected from the group of esters of saturated and/or unsaturated, branched and/or unbranched alkanecarboxylic acids having a chain length of from 3 to 30 C atoms and saturated and/or unsaturated, branched and/or unbranched alcohols having a chain length of from 3 to 30 C atoms, as well as the group of the esters of aromatic carboxylic acids and saturated and/or unsaturated, branched and/or branched alcohols of a chain length of 3 to 30 C atoms. Such ester oils can then be advantageously selected from the group including octyl palmitate, ethylhexyl cocoate octylisostearate, octyldodeceyl myristate, cetearyl isononanoate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, isopropyl oleate, n-butyl stearate, n-hexyl laurate, n-decyl oleate, isooctyl stearate, isononyl stearate, isononyl isononanoate, 2-ethylhexyl palmitate, 2-ethylhexyl laurate, 2-hexyldecyl stearate, 2-octyldodecyl palmitate, stearyl heptanoate, oleyl oleate, oleyl erucate, erucyl oleate, erucyl erucate, tridecyl stearate, tridecyl trimellitate, and synthetic, semi-synthetic and natural mixtures of such esters. The oil phase can also be advantageously selected from the group of dialkyl ethers and dialkyl carbonates. The oil phase can also advantageously contain non-polar oils, for example, those selected from the group of branched and unbranched hydrocarbons and hydrocarbonwaxes, especially mineral oil, vaseline (petrolatum), paraffin oil, squalane and squalene, polyolefins, hydrogenated polyisobutenes and isohexadecane, C14-C20 isoparaffins. Among the polyolefins, polydecenes are the preferred substances.
The surfactant-containing preparation b.) comprises in addition to the peeling agent, surfactants or detergent substances.
Surfactants are amphiphilic substances that can dissolve organic, nonpolar substances in water. As a result of their specific molecular structure having at least one hydrophilic and one hydrophobic molecular moiety, they are able to reduce the surface tension of water, wet skin, facilitate the removal and dissolution of dirt, facilitate rinsing and—if desired—control lathering.
Advantageous surfactant-containing mixtures comprise, for example,
According to the invention, unlike the prior art, the casing material is not of gelatine or pure wax, but is emulsion-based.
This advantage that the peeling agent is surrounded by a skin care emulsion, leads to
According to the invention an application of a face peeling that can be divided into portions due to the capsule form is offered. The skin care and cleansing product properties are provided combined in one product.
The capsule according to the invention can thus be used for skin peeling and skin care at the same time.
The numbers given refer to percentage by weight based in each case on the total mass of the casing or the filling.
6. Washing Emulsions with Polyethylene
Glycine Soja (Soybean) Oil +
Ricinus Communis (Castor) Seed Oil +
Oenothera Biennis (Evening Primrose) Oil
7. Washing Emulsions with Walnut Shells
Glycine Soja (Soybean) Oil +
Calendula Officinalis Flower Oil
Prunus Amygdalus Dulcis (Sweet Almond) Oil
8.
Glycine Soja (Soybean) Oil +
Ricinus Communis (Castor) Seed Oil +
Oenothera Biennis (Evening Primrose) Oil
Prunus Amygdalus Dulcis (Sweet Almond) Oil
Theobroma Cacao (Cocoa) Seed Butter
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2006 044 942.8 | Sep 2006 | DE | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/EP07/07942 | 9/12/2007 | WO | 00 | 1/13/2011 |
