CA2163547A1 - Shower lotions for the treatment and care of dry skin - Google Patents
Shower lotions for the treatment and care of dry skinInfo
- Publication number
- CA2163547A1 CA2163547A1 CA002163547A CA2163547A CA2163547A1 CA 2163547 A1 CA2163547 A1 CA 2163547A1 CA 002163547 A CA002163547 A CA 002163547A CA 2163547 A CA2163547 A CA 2163547A CA 2163547 A1 CA2163547 A1 CA 2163547A1
- Authority
- CA
- Canada
- Prior art keywords
- skin
- weight
- urea
- shower
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
- A61K8/42—Amides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
- A61K8/34—Alcohols
- A61K8/345—Alcohols containing more than one hydroxy group
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/10—Washing or bathing preparations
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Birds (AREA)
- Emergency Medicine (AREA)
- Dermatology (AREA)
- Cosmetics (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Detergent Compositions (AREA)
Abstract
For the care and the cleaning of the skin a non-foaming, non-de-lipidating shower lotion is used containing a high concentration of urea, a high concentration of glycerin, the usual additives and water resulting in an oil-in-water emulsion. The shower lotion prevents the drying out of the skin and is also suitable for people with sensitive skin.
Description
(Text nach vorlaufiger Prufung)J
F . J~ , . . . J
A~ J
Shower lotions for the treatment and care of dry skin Description The invention concerns non-foaming, non-delipidating shower lotions for the care and cleaning of normal and dry skin.
Many people have a sensitive skin which dries out by the cleaning with body care products. The natural lipid film of the skin consisting of fat or fat-like substances is destroyed by frequent baths or showers with the use of soaps or detergents.
Once the natural lipid film is destroyed, water can attack the skin and rinse away the beneficial water soluble components of the skin. Urea is among the most important natural moisturi-zers. The consequence is a dry, chappy and brittle skin.
Dry, chappy and brittle skin and the subsequent alterations are found in about half of all children and adolescents. With age this quota increases to over 70%.
Decreased urea concentrations have been found in the Stratum corneum (upper layer of the skin) of people with dry skin.
For the therapy of dry skin creams with urea at concentrations from 2 to 10% have been used for many years. It is the intention of a treatment with a urea containing cream to restore the natu-ral water-binding capacity of the deprived skin and rebuild the destroyed lipid film.
The partial substitution of previously washed out skin compo-nents with creams has disadvantages.
The application of a cream provides only an incomplete substitu-tion of the protective substances which have been taken away from the skin by the cleaning with water and soap. Creams have a limited capacity to supply the skin with urea.
According to recommendations of dermatologists the concentration of urea in creams should not exceed 10%, since otherwise the skin becomes irritated. Furthermore, high concentrations of urea tend to crystallize. Dissolved in water urea disintegrates easily, causing an unpleasant stinging odor. Preservatives added with the intention to prevent the growth of bacteria may lead to irritative or allergic reactions of the skin.
A film of fat applied externally to the skin causes an unplea-sent greasy feeling. The application of a cream to the whole body surface is time consuming and is often considered as cumber-some and irksome.
The french patent document 2 498 929 discloses a moisturising emulsion in the form of an oil-in-water-emulsion containing urea as well as the usual ingredients glycerin and fats. With a urea concentration of 12.5% it is at the upper limit of the concen-tration range recommended by dermatologists. Furthermore it con-tains preservatives for the stabilisation.
With this composition the emulsion falls short of the criteria which have to be met for the application of non-foaming, non-de-lipidating shower lotions for the treatment and care of dry skin.
The problem to be solved by the present invention is the deve-lopment of non-foaming, non-delipidating shower lotions for the cleaning and care of dry skin, which are stable over a long time without adding preservatives, which have a cleaning effect without the addition of detergents and which prevent the drying out of the skin through frequent washing. The shower lotions according to the present invention lead to a smooth supple skin surface.
This problem is solved by the present invention characterised by the features of the claims 1 to 3.
The non-foaming, non-delipdating shower lotion for the treatment of dry skin according to the present invention consists of an oil-in-water-emulsion containing water, urea, glycerin and usual additives. It contains 15 to 35 weight-% urea, 20 to 60 weight-%
glycerin, 5 to 20 weight-% of usual additives and water making up the rest.
Especially suitable are 25 to 35 weight-% glycerin.
The glycerin acts as solubilizer and prevents the crystallizati-on of the urea.
Among others, the usual additives are lipid substances such as vaseline or paraffins, solubilizers, fragrances and emulgators, but no preservatives.
Preferrably the shower lotion contains 25 to 30 weight-% urea, 25 to 30 weight-% of glycerin, 5 to 10 weight-% usual additives and water making up the rest.
In an especially preferred embodiment of the present invention the shower lotion contains 30 weight-% urea, 30 weight-% glyce-rin, 10 weight-% usual additives and 30 weight-% water.
- 4 _ 2 1 63547 With the shower lotions according to the present invention, com-bined cleaning and care lotions are made available which are non-destructive to the natural lipid film of the skin and which lead to hydration and smoothing of the skin. Furthermore the combined cleaning and care lotions act quickly.
The shower lotions are applied to the moistened skin and are rinsed off after 30 to 90 seconds. Even during this short inter-val the highly concentrated urea has a cleaning effect because urea at high concentrations disrupts non-covalent molecular interactions. The natural lipid film is hardly affected at all.
The urea concentration of the shower lotions according to the present invention is about twenty times higher than that of healthy skin and about hundred times higher than that of urea-de-pleted skin. The large excess of the urea concentration in the shower lotions accelerates the diffusion into the Stratum corne-um, especially when the skin is urea-depleted. The shower loti-ons remain on the skin for only short periods. Since they are rinsed off afterwards, the urea concentration can penetrate into the skin without causing skin irritations.
The high glycerin concentration in the shower lotions prevents crystallization as well decomposition of urea. The high concen-tration of urea also impedes the growth of bacteria.
Therefore, there is no need for preservatives in the shower loti-ons.
The combination of the components of the shower lotions leads to a body care product which causes a pleasant, smooth velvet-like appearance of the skin after a short period of treatment if it is applied regularly. The effective cleaning of the skin is at-tained without soap or artificial detergents.
F . J~ , . . . J
A~ J
Shower lotions for the treatment and care of dry skin Description The invention concerns non-foaming, non-delipidating shower lotions for the care and cleaning of normal and dry skin.
Many people have a sensitive skin which dries out by the cleaning with body care products. The natural lipid film of the skin consisting of fat or fat-like substances is destroyed by frequent baths or showers with the use of soaps or detergents.
Once the natural lipid film is destroyed, water can attack the skin and rinse away the beneficial water soluble components of the skin. Urea is among the most important natural moisturi-zers. The consequence is a dry, chappy and brittle skin.
Dry, chappy and brittle skin and the subsequent alterations are found in about half of all children and adolescents. With age this quota increases to over 70%.
Decreased urea concentrations have been found in the Stratum corneum (upper layer of the skin) of people with dry skin.
For the therapy of dry skin creams with urea at concentrations from 2 to 10% have been used for many years. It is the intention of a treatment with a urea containing cream to restore the natu-ral water-binding capacity of the deprived skin and rebuild the destroyed lipid film.
The partial substitution of previously washed out skin compo-nents with creams has disadvantages.
The application of a cream provides only an incomplete substitu-tion of the protective substances which have been taken away from the skin by the cleaning with water and soap. Creams have a limited capacity to supply the skin with urea.
According to recommendations of dermatologists the concentration of urea in creams should not exceed 10%, since otherwise the skin becomes irritated. Furthermore, high concentrations of urea tend to crystallize. Dissolved in water urea disintegrates easily, causing an unpleasant stinging odor. Preservatives added with the intention to prevent the growth of bacteria may lead to irritative or allergic reactions of the skin.
A film of fat applied externally to the skin causes an unplea-sent greasy feeling. The application of a cream to the whole body surface is time consuming and is often considered as cumber-some and irksome.
The french patent document 2 498 929 discloses a moisturising emulsion in the form of an oil-in-water-emulsion containing urea as well as the usual ingredients glycerin and fats. With a urea concentration of 12.5% it is at the upper limit of the concen-tration range recommended by dermatologists. Furthermore it con-tains preservatives for the stabilisation.
With this composition the emulsion falls short of the criteria which have to be met for the application of non-foaming, non-de-lipidating shower lotions for the treatment and care of dry skin.
The problem to be solved by the present invention is the deve-lopment of non-foaming, non-delipidating shower lotions for the cleaning and care of dry skin, which are stable over a long time without adding preservatives, which have a cleaning effect without the addition of detergents and which prevent the drying out of the skin through frequent washing. The shower lotions according to the present invention lead to a smooth supple skin surface.
This problem is solved by the present invention characterised by the features of the claims 1 to 3.
The non-foaming, non-delipdating shower lotion for the treatment of dry skin according to the present invention consists of an oil-in-water-emulsion containing water, urea, glycerin and usual additives. It contains 15 to 35 weight-% urea, 20 to 60 weight-%
glycerin, 5 to 20 weight-% of usual additives and water making up the rest.
Especially suitable are 25 to 35 weight-% glycerin.
The glycerin acts as solubilizer and prevents the crystallizati-on of the urea.
Among others, the usual additives are lipid substances such as vaseline or paraffins, solubilizers, fragrances and emulgators, but no preservatives.
Preferrably the shower lotion contains 25 to 30 weight-% urea, 25 to 30 weight-% of glycerin, 5 to 10 weight-% usual additives and water making up the rest.
In an especially preferred embodiment of the present invention the shower lotion contains 30 weight-% urea, 30 weight-% glyce-rin, 10 weight-% usual additives and 30 weight-% water.
- 4 _ 2 1 63547 With the shower lotions according to the present invention, com-bined cleaning and care lotions are made available which are non-destructive to the natural lipid film of the skin and which lead to hydration and smoothing of the skin. Furthermore the combined cleaning and care lotions act quickly.
The shower lotions are applied to the moistened skin and are rinsed off after 30 to 90 seconds. Even during this short inter-val the highly concentrated urea has a cleaning effect because urea at high concentrations disrupts non-covalent molecular interactions. The natural lipid film is hardly affected at all.
The urea concentration of the shower lotions according to the present invention is about twenty times higher than that of healthy skin and about hundred times higher than that of urea-de-pleted skin. The large excess of the urea concentration in the shower lotions accelerates the diffusion into the Stratum corne-um, especially when the skin is urea-depleted. The shower loti-ons remain on the skin for only short periods. Since they are rinsed off afterwards, the urea concentration can penetrate into the skin without causing skin irritations.
The high glycerin concentration in the shower lotions prevents crystallization as well decomposition of urea. The high concen-tration of urea also impedes the growth of bacteria.
Therefore, there is no need for preservatives in the shower loti-ons.
The combination of the components of the shower lotions leads to a body care product which causes a pleasant, smooth velvet-like appearance of the skin after a short period of treatment if it is applied regularly. The effective cleaning of the skin is at-tained without soap or artificial detergents.
-The use of glycerin as a solubilizer and a stabiliser for urea keeps the shower lotions stable over a long time inspite of the high urea concentration.
For the production of the shower lotion three parts of glycerin and three parts of water are mixed and heated to 80C. After hea-ting and mixing, three parts urea are added to the still hot mixture while maintaining the temperature. The mixture is stir-red till the urea is dissolved. After that one part of homoge-neously mixed fat, being preheated to 80C, is added. This mixtu-re is now emulsified with a stirrer. The resulting emulsion is the shower lotion ready for use.
Cl~ims~
Non-fo~m;ng, n~n-Ae~;p;~t;~ cho~er lot;onC fo~ th~ t~
ment and care of dry skin, characterised in that an oil- ~wa-ter-emulsion contains 15 to 35 weight-% urea, 20 to 60 weight-% glycerin, 5 to 20 weight-% usual additive ~
being members of the fat gr ~ or respectively fatlike sub-stances like vaseline an ~ araffins, solubilizers, fragrances and emulgators, and water t ~ ke up 100%.
2. Shower 1 ~ ons according to claim 1 characterised in that they ~ ntain glycerin in the concentration range of 20 to cight %.
For the production of the shower lotion three parts of glycerin and three parts of water are mixed and heated to 80C. After hea-ting and mixing, three parts urea are added to the still hot mixture while maintaining the temperature. The mixture is stir-red till the urea is dissolved. After that one part of homoge-neously mixed fat, being preheated to 80C, is added. This mixtu-re is now emulsified with a stirrer. The resulting emulsion is the shower lotion ready for use.
Cl~ims~
Non-fo~m;ng, n~n-Ae~;p;~t;~ cho~er lot;onC fo~ th~ t~
ment and care of dry skin, characterised in that an oil- ~wa-ter-emulsion contains 15 to 35 weight-% urea, 20 to 60 weight-% glycerin, 5 to 20 weight-% usual additive ~
being members of the fat gr ~ or respectively fatlike sub-stances like vaseline an ~ araffins, solubilizers, fragrances and emulgators, and water t ~ ke up 100%.
2. Shower 1 ~ ons according to claim 1 characterised in that they ~ ntain glycerin in the concentration range of 20 to cight %.
Claims (4)
1. Non-foaming, non-delipidating shower lotions for the treatment and care of dry skin, characterised by an oil-in-water-emulsion which contains 15 to 35 % by weight urea, 20 to 60 % by weight glycerin, 5 to 20 % by weight usual additives from the group of fats or fatlike substances respectively, such as vaseline or paraffins, solubilizers, fragrances and emulsifiers and water to make up 100%.
2. Non-foaming, non-delipidating shower lotions according to claim 1, characterised by a glycerin content in the range of 20-60 % by weight.
3. Non-foaming, non-delipidating shower lotions according to claim 1 and 2, characterised by a glycerin content in the range of 25-35 % by weight.
4. Non-foaming, non-delipidating shower lotion according to claim 1, characterised by an oil-in-water-emulsion which contains 30 % by weight urea, 30 % by weight glycerin, 10 % by weight usual additives, 30 % by weight water.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4322395A DE4322395C1 (en) | 1993-07-01 | 1993-07-01 | Shower lotion for the treatment and care of dry skin |
| DEP4322395.8 | 1993-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2163547A1 true CA2163547A1 (en) | 1995-01-12 |
Family
ID=6492029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002163547A Abandoned CA2163547A1 (en) | 1993-07-01 | 1994-06-28 | Shower lotions for the treatment and care of dry skin |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0706367B1 (en) |
| AT (1) | ATE147970T1 (en) |
| AU (1) | AU689117B2 (en) |
| CA (1) | CA2163547A1 (en) |
| DE (1) | DE4322395C1 (en) |
| ES (1) | ES2098966T3 (en) |
| WO (1) | WO1995001158A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050377C (en) * | 1995-10-30 | 2000-03-15 | 史秀仁 | Acerbity-increasing skin-care liquid |
| DE19725405A1 (en) * | 1997-06-17 | 1998-12-24 | Kramer Axel Prof Dr Med Sc | Physiological combination of active ingredients to promote the skin's defense against noxious substances |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2725525A1 (en) * | 1976-06-08 | 1977-12-29 | Scherico Ltd | COSMETIC PREPARATION |
| DE2913040A1 (en) * | 1979-03-31 | 1980-10-09 | Wella Ag | Storage-stable urea-contg. cosmetic compsns. - contain added glycerol di:- and/or tri:acetate and/or -propionate |
| FR2498929A1 (en) * | 1981-02-02 | 1982-08-06 | Oreal | NOVEL HUMIDIZING COMPOSITION BASED ON SODIUM LACTATE, GLYCERIN, UREA AND NATIVE COLLAGEN |
| EP0105657B1 (en) * | 1982-09-30 | 1992-05-27 | Lancaster Group Ag | Cosmetic compositions containing glycerine |
| ATE81449T1 (en) * | 1984-03-05 | 1992-10-15 | Tonfer Inc | CLEANING SUPPLIES. |
| JPS627A (en) * | 1985-03-04 | 1987-01-06 | Shiseido Co Ltd | Skin external agent containing incorporated urea |
| SE462139B (en) * | 1986-02-04 | 1990-05-14 | Sven Moberg | Pharmaceutical composition, containing propylene glycol and carbamide before treatment of BL.A. NAIL FUNGI AND SEBORROISIC ECSMA |
| CA1283864C (en) * | 1986-08-11 | 1991-05-07 | Richard H. Roydhouse | Body lubricating and cleansing fluid |
| ATE74521T1 (en) * | 1987-06-03 | 1992-04-15 | Key Pharma | COSMETIC AND PHARMACEUTICAL UREA PREPARATIONS STABILIZED BY A LACTONE. |
| ZW15689A1 (en) * | 1988-11-24 | 1990-07-11 | Impilo Drugs 1966 | An emulsion |
| JPH04364104A (en) * | 1991-06-11 | 1992-12-16 | Nippon Saafuakutanto Kogyo Kk | Urea preparation |
-
1993
- 1993-07-01 DE DE4322395A patent/DE4322395C1/en not_active Expired - Fee Related
-
1994
- 1994-06-28 EP EP94920378A patent/EP0706367B1/en not_active Expired - Lifetime
- 1994-06-28 AT AT94920378T patent/ATE147970T1/en not_active IP Right Cessation
- 1994-06-28 CA CA002163547A patent/CA2163547A1/en not_active Abandoned
- 1994-06-28 ES ES94920378T patent/ES2098966T3/en not_active Expired - Lifetime
- 1994-06-28 AU AU71200/94A patent/AU689117B2/en not_active Ceased
- 1994-06-28 WO PCT/DE1994/000772 patent/WO1995001158A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| EP0706367B1 (en) | 1997-01-22 |
| EP0706367A1 (en) | 1996-04-17 |
| ATE147970T1 (en) | 1997-02-15 |
| DE4322395C1 (en) | 1994-07-28 |
| AU7120094A (en) | 1995-01-24 |
| AU689117B2 (en) | 1998-03-26 |
| ES2098966T3 (en) | 1997-05-01 |
| WO1995001158A1 (en) | 1995-01-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |