EP0952818A1 - Formulation anhydre stable - Google Patents

Formulation anhydre stable

Info

Publication number
EP0952818A1
EP0952818A1 EP98945997A EP98945997A EP0952818A1 EP 0952818 A1 EP0952818 A1 EP 0952818A1 EP 98945997 A EP98945997 A EP 98945997A EP 98945997 A EP98945997 A EP 98945997A EP 0952818 A1 EP0952818 A1 EP 0952818A1
Authority
EP
European Patent Office
Prior art keywords
composition
skin
silicone oil
retinoid
silicone
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.)
Withdrawn
Application number
EP98945997A
Other languages
German (de)
English (en)
Inventor
Gheorghe Cioca
Andrew J. Bevacqua
Konstantinos M. Lahanas
Daniela Toma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EL Management LLC
Original Assignee
EL Management LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by EL Management LLC filed Critical EL Management LLC
Publication of EP0952818A1 publication Critical patent/EP0952818A1/fr
Withdrawn legal-status Critical Current

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
    • A61K8/67—Vitamins
    • A61K8/671—Vitamin A; Derivatives thereof, e.g. ester of vitamin A acid, ester of retinol, retinol, retinal
    • 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
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/89—Polysiloxanes
    • 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
    • A61K8/58—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
    • A61K8/585—Organosilicon compounds
    • 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
    • A61K8/67—Vitamins
    • 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
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/89—Polysiloxanes
    • A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
    • 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
    • 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
    • A61Q19/004—Aftersun preparations
    • 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
    • A61Q19/08—Anti-ageing preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
    • A61K2800/30—Characterized by the absence of a particular group of ingredients
    • A61K2800/31—Anhydrous
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/52—Stabilizers
    • A61K2800/522—Antioxidants; Radical scavengers

Definitions

  • the present invention relates to cosmetic or pharmaceutical compositions comprising stable active agents.
  • the invention relates to compositions in which active agents are stabilized by incorporation into a silicone gel.
  • cosmetics have become developed beyond the concept of mere ornamentation for the face. Consumers now demand more from their makeup than simple color, coverage or moisturizing: it is now preferred that cosmetics provide some benefit to the skin, rather than just decorating it or making it feel softer. This consumer preference has resulted in the frequent use of biologically active ingredients, in many cosmetic products.
  • active components include, for example, sunscreens, antioxidants, and anti-wrinkle agents.
  • the present invention provides an anhydrous cosmetic or pharmaceutical formulation for topical application to the skin, the formulation comprising a silicone gel, in combination with a safe and effective amount of one or more biologically active components.
  • the invention also comprises a method of stabilizing a biologically active component, the method comprising combining the active component with a stabilizing amount of a silicone gel.
  • a preferred active component is a retinoid.
  • the formulation also comprises an effective amount of an oil soluble antioxidant.
  • the gels employed in the present invention comprise a vehicle in which an organopolysiloxane elastomer is dispersed.
  • the vehicle can comprise any cosmetically acceptable silicone oil, or a combination of silicone oils.
  • the silicone oil may be any volatile or non-volatile silicone oil, for example, any methylated linear or cyclic non-elastome ⁇ c organopolysiloxane, or combinations thereof.
  • the vehicle is a lower molecular weight dimethicone, trimethicone, cyclomethicone, or a mixture of such oils.
  • Preferred silicone oils useful as the gel vehicle m the present invention include, but are not limited to, phenyl trimethicone, or methylated cyclic organopolysiloxanes having ring sizes from 4 to 12, such as octamethylcyclotetrasiloxane or decamethylpentasiloxane .
  • the gel is prepared by dispersing in the vehicle an organopolysiloxane elastomer.
  • An elastomer is generally a chain polymer having a degree of cross-linking sufficient to provide a rubber-like material.
  • the elastomer is an at least partially crosslinked or at least partially cured hetero-chain elastomer.
  • organopolysiloxane elastomers having a three- dimensional cross-linked structure, are described, for example, m US Patent No. 5,266,321, the contents of which are incorporated herein by reference.
  • other suitable elastomer materials are disclosed in, for example, US Patent Nos .
  • a preferred organopolysiloxane is one which is at least partially crosslinked, or is an at least partially cured hetero-chain elastomer.
  • the organopolysiloxane elastomer is one which is one which is an at least partially cured addition reaction products, i.e., hydrosilation products, or addition polymerization products, of an organopolysiloxane having unsaturated groups, such as vinyl or allyl, preferably bonded to at least one terminal Si atom, and another silicon compound capable of participation m the addition reaction, such as an organohydrogen polysiloxane .
  • the chosen elastomer is dispersed in the vehicle by known homogenization techniques.
  • the elastomer dispersed in the vehicle provides a soft, stable viscous gel, or gel-like material.
  • the gel can be purchased premade, with the elastomer already dispersed in the vehicle.
  • Such products are available under the name Gransil, for example Gransil GCM or Gransil PM, from Grant Industries, Inc., Elmwood Park, New Jersey.
  • the amounts of elastomer and vehicle may vary, depending on the desired viscosity, but generally should be in the range of 5-40% elastomer and 60- 95% vehicle.
  • the gel so prepared can be directly combined with the desired active agent.
  • the active agent is a retinoid, e.g., Vitamin A(retmol), Vitamin A aldehyde (retinal) , Vitamin A acid (retmoic acid) and derivatives of these compounds, for example, retinyl palmitate, retinyl acetate and the like.
  • Retmoids are readily miscible with the silicone gel, and can be mixed directly into the gel, or as dissolved in an oil-miscible solvent.
  • the retinoid is added to the gel m an amount sufficient to produce about 0.001-5%, more preferably about 0.01-2%, concentration by weight of the total composition to be applied.
  • retmoids especially retmol
  • active agents are particularly preferred active agents to be stabilized by this method
  • other active agents such as Vitamin E and derivatives, long-chain alpha hydroxy acids, ceramides, or skin lipids to enhance barrier function can also benefit from combination with a silicone gel.
  • the silicone gel system can also serve to stabilize water- soluble actives. Although not soluble in the silicone gel, it is possible to simply disperse the water-soluble active in the gel, and thereby provide the stabilizing effect which also protects the oil-soluble active.
  • the water-soluble active is Vitamin C, or a water-soluble derivative thereof, which has useful cosmetic/dermatological properties, such as stimulating collagen synthesis, but which is generally very unstable in formulation.
  • water-soluble actives which can also be employed are, for example, water soluble preservatives and antioxidants ; skin conditioning agents, for example, humectants, such as hyaluronic acid salts, hydrogels, or glycerol or elastin; collagen; alpha-and beta- hydroxy acids; or milk protein.
  • the composition comprises at least one oil soluble active and at least one water soluble active.
  • the composition comprises the combination of retinol with Vitamin C, which has many benefits to the skin, including collagen stimulation, the Vitamin C being present in an amount of from about 0.1-20% by weight of the total composition.
  • the gel itself is sufficient to stabilize a susceptible active agent against oxygen degradation, it may be desirable to supplement this property with one or more additional antioxidants, preferably lipophilic antioxidants.
  • additional antioxidants include Vitamin E and its derivatives, BHT, BHA, NDGA, propyl gallate, and the like.
  • the antioxidant employed is an oil extract of green tea, this type of extract being more stable than aqueous green tea extracts.
  • the oil soluble green tea extract is employed in an amount of from about 0.01-15% by weight of the total composition. Additional components may also be added to the composition, depending upon the intended use of the final product.
  • additional components may include, but are not limited to, sunscreens, fragrance, preservatives, emollients, viscosity modifying agents, pigments, and dispersants.
  • the active-containing silicone gel composition can be used as is, or can be further diluted by combination with an appropriate solvent or vehicle, to achieve the desired consistency for application.
  • the vehicle or solvent may be any anhydrous base in which the silicone gel composition is compatible and miscible.
  • Suitable volatile oils include cyclic and linear silicones, such as cyclomethicone, octamethylcyclotetrasiloxane, and decamethylcyclopentasiloxane; or straight or branched chain hydrocarbons having from 8-20 carbon atoms, such as decane, dodecane, tridecane, tetradecane, and C8-20 isoparaffins .
  • Suitable non-volatile oils include vegetable oils, carboxylic acid esters, animal oils, glyceryl esters, non- volatile silicones, and nonvolatile hydrocarbons.
  • the volatile cyclic silicones are particularly preferred. It is desirable in many cases, however, to retain much of the gel-like consistency of the original composition; therefore, in such a composition, the added base is preferably used in an amount of no more than about 10-15% of the total weight of the composition.
  • the preferred composition of the present invention is one in which the active component is a retinoid, and most preferably, one in which the retinoid is retinol.
  • the active component is a retinoid
  • retinoid is retinol.
  • These compounds have a number of useful skin-enhancing activities, such as treatment of the symptoms of intrinsic aging, e.g., lines and wrinkles, improvement of skin texture and appearance, prevention or treatment of the symptoms of photoaging, and acne treatment.
  • they are extremely susceptible to degradation by a number of external sources, thereby creating significant difficulties in formulating them in such a way as to retain their activity, and to permit the formulations to retain activity over a prolonged storage period.
  • the present retinoid compositions eliminate the need for special formulating conditions, such as dark rooms, nitrogen purging, or separate packaging of the active agent and the vehicle.
  • compositions so prepared show a remarkable stability over time, with the retention of at least about 85%, and preferably at least about 90% of the original activity, after a storage period of 8 weeks at room temperature, and as much as 80% or more retained activity even when stored at elevated temperatures (40°C) for 8 weeks.
  • the present invention will be further illustrated by the following non-limiting examples.
  • Example I A composition of the invention is prepared as follows:
  • Phase II green tea oil extract (LipoChemical) 9.90 retinol 50P base (BASF) 0.10** Phase III
  • Phase I is weighed into a primary mixing kettle.
  • the Phase II components are mixed under propeller mixer agitation until the solids are completely dissolved; the mixture at this point is slightly cloudy.
  • the phase III component is then sprinkled over the Phase II materials, while mixing under propeller mixer agitation.
  • the uniform dispersion of the combined Phases II and III is confirmed by placing a small sample between glass slides and checking for undispersed ascorbic acid.
  • the combined Phases II and III are well-dispersed, they are added to Phase I in the primary mixing kettle under mixer agitation, until the combined phases are uniform.
  • the mixture is removed from the kettle through a nylon mesh filter bag, and stored in polyethylene-lined storage containers.
  • compositions prepared according to Example I are then evaluated for their ability to retain activity over a variety of time and temperature storage conditions.
  • the amount of retinol in the compositions is determined, by HPLC, shortly after preparation, and at intervals for up to 8 weeks thereafter, at temperatures of 4°C, 25°C, and 40°C.
  • the results, showing amount of retinol activity remaining, are shown in Table I. Table I
  • compositions can retain up to about 90% or more activity after 8 weeks of storage, and even under extreme heat conditions, retains up to about 80% of its initial activity, thereby demonstrating the stabilizing effect of the silicone gel on retinol activity.
  • the stability of the ascorbic acid in the composition is also evaluated at 4°C, 25°C, and 40°C. At the end of eight weeks of storage, the compositions show 99%, 96% and 95% retention of ascorbic acid activity, indicating a high level of stabilization of this water-soluble active, even in a non-aqueous formulation.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Birds (AREA)
  • Epidemiology (AREA)
  • Dermatology (AREA)
  • Gerontology & Geriatric Medicine (AREA)
  • Cosmetics (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

L'invention se rapporte à une composition pharmaceutique ou cosmétique pour application topique comportant un gel de silicone et une quantité efficace d'un agent biologique actif, tel qu'un rétinoïde. Ces compositions permettent la stabilisation des agents biologiquement actifs.
EP98945997A 1997-09-16 1998-09-10 Formulation anhydre stable Withdrawn EP0952818A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US93157297A 1997-09-16 1997-09-16
US931572 1997-09-16
PCT/US1998/018804 WO1999013859A1 (fr) 1997-09-16 1998-09-10 Formulation anhydre stable

Publications (1)

Publication Number Publication Date
EP0952818A1 true EP0952818A1 (fr) 1999-11-03

Family

ID=25460997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98945997A Withdrawn EP0952818A1 (fr) 1997-09-16 1998-09-10 Formulation anhydre stable

Country Status (6)

Country Link
EP (1) EP0952818A1 (fr)
JP (1) JP2001505227A (fr)
KR (1) KR20000068995A (fr)
AU (1) AU9311398A (fr)
CA (1) CA2270073A1 (fr)
WO (1) WO1999013859A1 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6228894B1 (en) 1998-04-17 2001-05-08 Enhanced Derm Technologies, Inc. Softgel-compatible composition containing retinol
US6146664A (en) * 1998-07-10 2000-11-14 Shaklee Corporation Stable topical ascorbic acid compositions
US6039935A (en) * 1998-12-30 2000-03-21 Elizabeth Arden Company, Division Of Conopco, Inc. Sunscreen compositions
DE19962369A1 (de) * 1999-12-23 2001-06-28 Beiersdorf Ag Kosmetische oder dermatologische Zubereitungen mit einem Gehalt an Catechinen oder einem Gehalt an Extrakt von grünem Tee und einem weiteren Gehalt an Ascorbinsäure
ATE311847T1 (de) 2000-07-10 2005-12-15 Procter & Gamble Kosmetische zusammensetzungen
KR100479665B1 (ko) * 2002-04-03 2005-03-30 주식회사 나우코스 현미, 녹차, 포공영에 유효 미생물을 접종하여 발효시켜얻은 항산화력이 증진된 화장료 조성물
AU2002323946A1 (en) * 2002-07-25 2004-02-16 Lion Corporation External preparation
KR100879133B1 (ko) * 2002-12-23 2009-01-19 주식회사 엘지생활건강 비수유화 미백 화장료 조성물 및 그의 제조방법
KR20040067710A (ko) * 2003-01-24 2004-07-30 주식회사 엘지생활건강 비수유화 주름개선용 화장료 조성물
JP5199231B2 (ja) 2006-03-21 2013-05-15 ダウ・コーニング・コーポレイション シリコーンポリエーテルエラストマーゲル
JP5424866B2 (ja) 2006-03-21 2014-02-26 ダウ・コーニング・コーポレイション シリコーンポリエーテルエラストマーゲル
KR20100061699A (ko) 2007-09-26 2010-06-08 다우 코닝 코포레이션 유기폴리실록산 수지로부터의 실리콘 유기 엘라스토머 겔
US20110306721A1 (en) * 2010-06-10 2011-12-15 Veerag Mehta Flame retardant material having enhanced pull through lubricity
EP2601484A1 (fr) 2010-08-04 2013-06-12 Services Pétroliers Schlumberger Système de mesure de débit et procédé de mesure d'une quantité de liquide dans un écoulement polyphasique principalement gazeux
US20140219934A1 (en) * 2013-02-01 2014-08-07 Sandra Senzon Botanical tooth whitener composition and method for treating discolored or stained teeth
US9132080B2 (en) * 2013-03-21 2015-09-15 Julius Zecchino Delivery system having stabilized ascorbic acid and other actives
US20140348873A1 (en) * 2013-05-22 2014-11-27 Professional Compounding Centers Of America Urea-Silicone Gel for Hyperkeratosis Treatment
US20140350106A1 (en) * 2013-05-22 2014-11-27 Professional Compounding Centers Of America Urea Silicone Gel for Scars and Hydration Treatment and Method of Using Same

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FR2732595A1 (fr) * 1995-04-07 1996-10-11 Oreal Utilisation de polymeres pour reduire l'effet irritant des actifs dans une composition cosmetique et/ou dermatologique
US5599548A (en) * 1995-05-08 1997-02-04 Elizabeth Arden Co., Division Of Conopco, Inc. Skin care compositions containing fatty acid amides and retinol or retinyl ester
FR2744911B1 (fr) * 1996-02-19 1998-03-20 Oreal Utilisation d'un organopolysiloxane solide elastomere associe a une phase grasse pour la preparation d'une composition ou dans une composition de soin ou de maquillage pour matifier la peau
US5833973A (en) * 1996-06-28 1998-11-10 Chesebrough-Pond's Usa Co., Division Of Conopco, Inc. Crosslinked elastomeric silicones in aqueous emulsion cosmetic compositions
ZA971943B (en) * 1996-06-28 1998-09-07 Unilever Plc Vitamin C delivery system
FR2757380B1 (fr) * 1996-12-24 1999-01-29 Oreal Composition de maquillage ou de soin, sans transfert, contenant un organopolysiloxane et une phase grasse

Non-Patent Citations (1)

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Title
See references of WO9913859A1 *

Also Published As

Publication number Publication date
AU9311398A (en) 1999-04-05
CA2270073A1 (fr) 1999-03-25
WO1999013859A1 (fr) 1999-03-25
JP2001505227A (ja) 2001-04-17
KR20000068995A (ko) 2000-11-25

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