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US5194253A
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Aqueous gel, usable in cosmetics, based on hyaluronic acid and deoxyribonucleic acid, and a preparation process
Assignee: Pier Auge SA
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Filing: 1989-09-08
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Granted: 1993-03-16
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Expires: 2009-09-08
Abstract
Abstract PCT No. PCT/FR89/00452 Sec. 371 Date May 9, 1990 Sec. 102(e) Date May 9, 1990 PCT Filed Sep. 8, 1989 PCT Pub. No. WO90/02774 PCT Pub. Date Mar. 22, 1990.An aqueous gel based on hyaluronic acid and on deoxyribonucleic acid usable in cosmetics, and a method of preparation. The invention relates to an aqueous gel formed by a homogeneous mix of: a) an alkaline salt or an ammonium salt of hyaluronic acid in the form of an aqueous gel; b) a mineral or organic salt of high molecular weight deoxyribonucleic acid in the form of an aqueous gel; c) at least one hydrophilic polymer having the property of forming aqueous film-forming gels. Application to the preparation of masks in cosmetics.
Inventors
- 👤 Ricardo Garrido
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:30
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/042; A61K8/0212; A61K8/18; A61K8/30; A61K8/60; A61K8/606; A61K8/72; A61K8/73; A61K8/735; A61Q; A61Q19/00; C; C08; C08L; C08L5/00; C08L5/04; C08L5/08; A61Q19/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
170 words
A method of forming a cosmetic treatment mask comprising: i) applying to skin to be treated at least one layer of an aqueous gel which comprises a homogenous mixture of: a) 0.1-1% by weight of an alkaline salt or an ammonium salt of hyaluronic acid; b) 1-3% by weight of a mineral or organic salt of deoxyribonucleic acid in the form of an aqueous gel, wherein said aqueous gel of a mineral or organic salt of deoxyribonucleic acid behaves as a non-Newtonian liquid having pseudo-plastic flow; c) 1-3% by weight of at least one hydrophilic polymer having the property of forming aqueous film-forming gels; and d) a sufficient quantity of water to make the percentage of ingredients up to 100%; ii) covering said layer of aqueous gel with gauze; iii) applying a second layer of said aqueous gel to said gauze; iv) transforming said second layer of aqueous gel into a plastic film; and v) removing said plastic film; wherein said layer according to step i) remains on the skin.
Claim 2
Independent Claim
170 words
A method of forming a cosmetic treatment mask comprising: i) applying to skin to be treated at least one layer of an aqueous gel which comprises a homogenous mixture of: a) 0.1-1% by weight of an alkaline salt or an ammonium salt of hyaluronic acid; b) 1-3% by weight of a mineral or organic salt of deoxyribonucleic acid in the form of an aqueous gel, wherein said aqueous gel of a mineral or organic salt of deoxyribonucleic acid behaves as a non-Newtonian liquid having pseudo-plastic flow; c) 1-3% by weight of at least one hydrophilic polymer having the property of forming aqueous film-forming gels; and d) a sufficient quantity of water to make the percentage of ingredients up to 100%; ii) covering said layer of aqueous gel with gauze; iii) applying a second layer of said aqueous gel to said gauze; iv) transforming said second layer of aqueous gel into a plastic film; and v) removing said plastic film; wherein said layer according to step i) remains on the skin.
Claim 3
Dependent Claim
83 words
The method of claim 1, wherein said hydrophilic polymer having the property of forming aqueous film-forming gels is an alginate of an alkali metal or an ammonium alginate; and wherein said transformation step iv) is performed by spraying an aqueous solution of an alkali or alkaline-earth salt acceptable in cosmetics over the entire surface of said second layer and allowing said solution to act on said second layer for a time to sufficient to entirely transform said second layer into a plastic film.
Claim 4
Dependent Claim
15 words
The method of claim 2, wherein said alkaline-earth salt acceptable in cosmetics is calcium chloride.
References Cited (Backward Citations)
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| 3.5 Years (Year 4) | 1996-03-15 | 1996-09-14 | 1997-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-03-15 | 2000-09-14 | 2001-03-16 | $3760.00 | Window Closed / Lapsed |
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