Patent Application
20130196957
The present invention pertains to a packaging and application assembly featuring a roll-on applicator structure, comprising a cosmetic and/or dermatological composition containing a high level of salicylic acid and/or at least one derivative thereof, and also to its use particularly for caring for greasy and/or acne-affected and/or seborrhoeic skin.
Additional advantages and other features of the present invention will be set forth in part in the description that follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from the practice of the present invention. The advantages of the present invention may be realized and obtained as particularly pointed out in the appended claims. As will be realized, the present invention is capable of other and different embodiments, and its several details are capable of modifications in various obvious respects, all without departing from the present invention. The description is to be regarded as illustrative in nature, and not as restrictive.
Greasy or hyperseborrhoeic skin is characterized by a skin which is shiny, sometimes with an oily appearance, thick, with dilated pilosebaceous pores. Sebaceous hypersecretion is most commonly associated with hyperandrogenism due either to hyperproduction of androgens by an endocrine gland, or to peripheral hyperproduction at the sebaceous gland on the basis of surrounding androgens and/or proandrogens.
This sebaceous hypersecretion, in combination with an accumulation of epithelial cells resulting from abnormal cell multiplication, may lead to blocking of the sebaceous follicles, which are located in particular on the face, and may progress to comedones.
Moreover, a resident anaerobic bacterium, Propionibacterium acnes, proliferates in this environment rich in sebum and follicular cells, and may result locally in inflammation.
Acne-prone greasy skin therefore generally exhibits cutaneous imperfections, dilated pores, an inhomogeneous texture to the skin, and redness.
There are numerous cosmetic compositions containing salicylic acid for the care and/or treatment of greasy skin. These compositions are generally applied directly by finger or directly by hand to the surface of the skin in need of care.
Furthermore, roll-on devices using an applicator ball are in widespread use for the packaging and application of body deodorants.
Examples of cosmetic and/or hygiene products of roll-on type include deodorants and the Caffeine Eye Roll-On product sold by Garnier in its Nutritionist range.
Other examples of assemblies for packaging and application of a cosmetic product, of roll-on type, are described in U.S. Pat. No. 5,553,957, U.S. Pat. No. 4,033,700, U.S. Pat. No. 4,021,125 and U.S. Pat. No. 6,132,126.
In formulating a composition in the form of a gel with a high level of salicylic acid (content greater than or equal to 1%, relative to the total weight of the composition) in an assembly for packaging an application of a cosmetic and/or dermatological composition of roll-on type, the inventors were confronted with the problem of the recrystallization of the salicylic acid on the surface of the applicator element, more particularly a ball.
The reason was that, over time, the applicator ball had a tendency to become blocked as a consequence of surface recrystallization of the salicylic acid, thereby reducing or even negating the functionality of the tool (roll-on), and was therefore detrimental to the quality of the care provided to the users (difficulty of release of the product).
The Applicant has found, entirely surprisingly and unexpectedly, that the incorporation of at least one polyol into the composition in the form of a gel with a high level of salicylic acid allows the problem set out above to be addressed.
Advantageously, the incorporation of at least one polyol into the composition in the form of a gel, in particular an aqueous-alcoholic gel, with a high level of salicylic acid, packaged in a packaging and application assembly according to the invention, allows said gel to be stabilized. Stabilizing the gel thus allows avoidance of the phenomena of recrystallization on the surface of the applicator ball following application (drying).
Another advantage of a composition according to the invention packaged in a packaging and application assembly according to the invention is the ability for precise targeting of the area to be treated (for example, the top of the shoulder), resulting in optimum use and local use on the surface of the skin. It is also advantageous to use a packaging assembly as described in the present invention for the care of greasy and/or acne-affected and/or seborrhoeic skin, since the assembly provides a freshness effect (highly desired in the care of these skin types) at the time the composition is applied.
As used herein, the phrases “selected from the group consisting of,” “chosen from,” and the like include mixtures of the specified materials. Terms such as “contain(s)” and the like as used herein are open terms meaning ‘including at least’ unless otherwise specifically noted. The term “mentioned” notes exemplary embodiments, and is not limiting to certain species. As used herein the words “a” and “an” and the like carry the meaning of “one or more.”
As exemplified in
In particular, the applicator element (4), in particular a ball, is mounted, in such a way as to be freely rotatable on itself, in the vicinity of the opening (3) in a correspondingly shaped housing, which sits atop the container containing said composition according to the invention, said housing being in fluidic communication with the inside of the container.
In further detail, the assembly for packaging and application of a cosmetic and/or dermatological composition according to the invention comprises a container (2) having a base and, opposite the base, an opening (3). The housing is defined by a ball support, which may be obtained by monobloc moulding with the container, or may be formed by an insert which attaches on the opening of the container.
In one preferred embodiment, the applicator element is a ball.
In particular, part of the surface of the ball is opposite the opening in the container, so as to allow the product to be applied by the surface of the ball that emerges from the container in the course of its rotational movement on the surface of the skin.
The container may be formed of at least one thermoplastic material such as, for example, polyolefins, more particularly polypropylene, high-density or low-density polyethylene, or mixtures thereof, or, for example, acrylonitrile-butadiene-styrene (ABS).
Other materials may, however, be used.
In one preferred embodiment, the container is formed of at least one thermoplastic material selected from polyolefins, more particularly polypropylene, high-density or low-density polyethylene, or mixtures thereof.
The applicator element may be made of a thermo-plastic material or of metal.
Among thermoplastic materials, consideration may be given to acrylonitrile-butadiene-styrene (ABS) and also to polyolefins, more particularly polypropylene, high-density or low-density polyethylene, or mixtures thereof.
Among metals, mention may be made, for example, of aluminium, stainless steel and silver.
Other materials may, however, be used.
In one preferred embodiment, the applicator element is preferably a ball, more preferably a metal ball, and very preferably a stainless steel ball.
When the applicator element is a ball, the ball may be spherical or oval. With preference it will be spherical.
The dimensions or diameter of the ball will depend, of course, on the size of the opening in the container.
The assembly for packaging and application of a cosmetic and/or dermatological composition according to the invention preferably comprises a removable cap (lid).
It is quite clear that other variants may be applied to the packaging and application assembly without departing from the spirit of the invention as claimed.
Illustratively,
The composition according to the invention is preferably a cosmetic composition. It can also be a dermatological or pharmaceutical composition.
According to the present invention, the cosmetic and/or dermatological composition is in the form of a gel having a viscosity at 25° C. of between 0.1 and 60 poises (between 0.01 Pa·s and 6 Pa·S).
A viscosity of this kind allows the product (composition) to be delivered to the surface of the skin in need of care. In one preferred embodiment, the cosmetic and/or dermatological composition is in the form of a gel having a viscosity at 25° C. of between 0.5 and 10 poises (between 0.05 Pa·s and 1 Pa·S).
Viscosity Measurement
The viscosity of the composition is measured at 25° C. using a Rhéomat 180 (Lamy) fitted with an MS-R1, MS-R2, MS-R, MS-R4 or MS-R5 spindle, selected according to the consistency of the composition, which rotates at a speed of 200 rpm. The measurement is taken after rotation for 10 minutes. The viscosity measurements are carried out no later than 1 week after manufacture.
The composition according to the invention is suitable for topical application to the skin and therefore generally comprises a physiologically acceptable medium, by which is meant a medium compatible with the skin and/or its epidermal derivatives. This is preferably a cosmetically acceptable medium, which in other words has a colour, odour and feel that are pleasant, and does not give rise to unacceptable discomfort (stinging, pulling, redness) that might dissuade a user from employing this composition.
Salicylic Acid and/or Derivatives Thereof:
A composition according to the invention comprises at least 1% by weight of salicylic acid and/or at least one derivative thereof, relative to the total weight of the composition. Thus, by “high level of salicylic acid and/or at least one derivative thereof” is meant an amount of at least 1% (greater than or equal to 1%) by weight of salicylic acid and/or of at least one derivative thereof, relative to the total weight of the composition.
In one preferred embodiment of the invention, the composition preferably comprises salicylic acid. Salicylic acid is sold in particular by Rhodia under the name Salicylic Acid Pharmaceutical Grade USP, Ph. Eur.
Salicylic acid derivatives include in particular its alkyl derivatives, by which are meant its derivatives of formula (I):
in which:
—O—CO—R4
in which R4 is a saturated or unsaturated aliphatic radical comprising from 1 to 26 carbon atoms, and preferably from 1 to 18 carbon atoms, or an amine or thiol function which is optionally substituted by an alkyl radical comprising from 1 to 18 carbon atoms, and preferably from 1 to 12 carbon atoms,
—(O)n—(CO)m—R5
in which n and m, independently of one another, are each an integer 0 or 1, with the proviso that R2 and R3 are not simultaneously hydrogen atoms;
Preferred salicylic acid derivatives of formula (I) are those in which R1 represents a hydroxyl radical, R2 represents a hydrogen atom, R3 is in position 5 of the benzene ring, and R5 represents a saturated aliphatic radical comprising from 3 to 15 carbon atoms.
When the composition comprises a salicylic acid derivative of formula (I), the derivative in question may be, in particular, 5-n-octanoylsalicylic acid, 5-n-decanoylsalicylic acid, 5-n-dodecanoylsalicylic acid, 5-n-octylsalicylic acid, 5-n-heptyloxysalicylic acid, 4-n-heptyloxysalicylic acid, 5-tert-octyl-salicylic acid, 3-tert-butyl-5-methylsalicylic acid, 3-tert-butyl-6-methylsalicylic acid, 3,5-diisopropyl-salicylic acid, 5-butoxysalicylic acid, 5-octyloxy-salicylic acid, 5-propanoylsalicylic acid, 5-n-hexa-decanoylsalicylic acid, 5-n-oleoylsalicylic acid, 5-benzoylsalicylic acid, their monovalent and divalent salts, and mixtures thereof.
When the composition comprises a salicylic acid derivative of formula (I), the derivative in question is preferably 5-n-octanoylsalicylic acid (INCI name: Capryloyl Salicylic acid).
The salicylic acid and derivatives thereof according to the invention may also be present in the form of salts, and more particularly in the form of salts obtained by salification with a base.
Bases capable of salifying salicylic acid and derivatives thereof according to the invention include inorganic bases such as alkali metal hydroxides (sodium hydroxide and potassium hydroxide) or ammonium hydroxides, or, more preferably, organic bases.
It is preferred to use amphoteric bases, in other words bases having both anionic and cationic functional groups.
The amphoteric bases may be primary, secondary, tertiary or cyclic organic amines, and more especially amino acids. Examples of amphoteric bases include glycine, lysine, arginine, taurine, histidine, alanine, valine, cysteine, trihydroxymethylaminomethane (TRISTA) and triethanolamine.
According to another, very particularly preferred embodiment, the composition comprises both salicylic acid and 5-n-octanoylsalicylic acid.
In one embodiment, the salicylic acid and/or at least one derivative thereof may be present in a composition according to the invention in a proportion of 1% to 5% by weight, preferably from 1.5% to 2.5% by weight, of salicylic acid and/or at least one derivative thereof, relative to the total weight of the composition.
Polyols:
A composition according to the invention comprises at least one polyol, comprising preferably 2 to 6 hydroxyl groups, and more preferably from 2 to 3 hydroxyl groups. It is of course also possible to use a mixture of such polyols.
The polyols have the general formula CnH2n+2On.
The polyols which can be used according to the invention include, without limitation, glycols (diols), triols, and mixtures thereof.
In one particular embodiment of the invention, the polyol comprises 2 to 3 hydroxyl groups
The polyol may be selected, individually or as a mixture, from the following:
The polyol is preferably selected from diols, triols and mixtures thereof.
Very preferably the polyol is selected from glycerol, propylene glycol and mixtures thereof.
In one embodiment, the polyol or mixture of polyols may be present in a composition according to the invention in a proportion of at least 5% by weight, preferably between 5% and 60% by weight, or else between 5% and 40%, more preferably between 5% and 20% by weight, and, for example, between 5% and 15% by weight, relative to the total weight of the composition.
The polyol or mixture of polyols may also be present in a composition according to the invention in a proportion greater than or equal to 10% by weight, relative to the total weight of the composition, for example in a proportion of from 10% to 35% by weight, relative to the total weight of the composition.
In one particular embodiment, the composition will comprise a mixture of glycerol and propylene glycol. The composition will advantageously comprise about 5% by weight of glycerol and about 5% by weight of propylene glycol, relative to the total weight of the composition.
Gelling Agents:
A composition according to the invention comprises at least one gelling agent.
The gelling agent is, in particular, hydrophilic.
Depending on the fluidity of the composition it is desired to obtain, one or more gelling agents may be incorporated into a composition of the invention.
A hydrophilic gelling agent (or thickener) is a gelling agent (or thickener) which is soluble or dispersible in water.
Hydrophilic gelling agents include, in particular, water-soluble or water-dispersible thickening polymers. These may in particular be selected from:
A hydrophilic clay is a clay which is able to swell in water; this clay swells in water and, following hydration, forms a colloidal dispersion.
Clays are products which are already known per se and are described in, for example, the work “Minéralogie des argiles, S. Caillère, S. Hénin, M. Rautureau, 2nd edition, 1982, Masson”. Clays are silicates comprising a cation which may be selected from calcium, magnesium, aluminium, sodium, potassium and lithium cations and mixtures thereof. Examples of such products include the clays from the smectite family such as montmorillonites, hectorites, bentonites, beidellites and saponites, and from the vermiculite family, the stevensite family and the chlorite family.
These clays may be natural or synthetic in origin.
Hydrophilic clays include the smectites such as the saponites, hectorites, montmorillonites, bentonites and beidellite.
Hydrophilic clays include synthetic hectorites (also called laponites) such as the products sold by Laporte under the name Laponite XLG, Laponite RD and Laponite RDS (these products are sodium and magnesium silicates, and in particular sodium, lithium and magnesium silicates); bentonites such as the product sold under the name Bentone HC by Rheox; magnesium and aluminium silicates, especially hydrated types, such as the products sold by Vanderbilt Company under the name Veegum ultra, Veegum HS, Veegum DGT, or else calcium silicates, and especially that in synthetic form sold by the company under the name Micro-cel C.
The hydrophilic fumed silicas may be obtained by high-temperature hydrolysis of a volatile silicon compound in an oxyhydrogen flame, to produce a finely divided silica. The hydrophilic silicas have a large number of silanol groups on their surfaces. Hydrophilic silicas of this kind are sold, for example, under the names Aerosil 130®, Aerosil 200®, Aerosil 255®, Aerosil 300® and Aerosil 380® by Degussa, Cab-O-Sil HS-5®, Cab-O-Sil EH-5®, Cab-O-Sil LM-130®, Cab-O-Sil MS-55® and Cab-O-Sil M-5® by Cabot.
The hydrophilic fumed silica preferably has a particle size which may be nanometric to micrometric, ranging for example, approximately, from 5 to 200 nm.
The gelling agent is preferably selected from modified or non-modified carboxyvinyl polymers, such as the products sold under the name Carbopol Ultrez-20 by the company Lubrizol (INCI: Acrylates/C10-30 Alkyl Acrylate Crosspolymer), or else under the name Synthalen K (INCI: Carbomer) by the company 3V, or else under the name Carbopol 981 Polymer by the company Lubrizol.
In one embodiment of the invention, a composition of the invention may comprise from 0.01% to 30% by weight of gelling agents, in particular from 0.1% to 5% by weight and more particularly from 0.1% to 2% by weight of gelling agents, relative to the total weight of the composition.
Formulations:
The cosmetic and/or dermatological composition according to the invention is preferably formulated as an aqueous gel or an aqueous-alcoholic gel.
Very preferably it will be an aqueous-alcoholic gel.
Alcohols:
When the cosmetic and/or dermatological composition according to the invention is in the form of an aqueous-alcoholic gel, it will comprise at least one alcohol. This may comprise a mixture of alcohols.
Any alcohol commonly used in the field of cosmetology may be used in the context of the present invention.
According to one embodiment of the invention, the alcohol is selected from ethanol, isopropanol, propanol, methanol, hexanol and mixtures thereof.
According to one very preferred embodiment, the alcohol in question will be ethanol.
According to one embodiment, the alcohol may be present in a composition according to the invention in a proportion of at least (greater than or equal to) 10% by weight, preferably between 10% by weight and 50% by weight, in particular between 20% by weight and 40% by weight, relative to the total weight of the composition.
Other Additives
The composition according to the invention may further comprise various adjuvants which are commonly used in the field of cosmetology, such as dyes, pigments, fragrances, preservatives, sunscreen agents, sequestrants, fat-soluble or water-soluble actives, and pH modifiers (acids or bases).
A person skilled in the art is aware of how to adjust the amounts in accordance with the desired effect.
The composition according to the invention may further comprise, in addition, fat-soluble or water-soluble actives and also antibacterial or antimicrobial and antisebhorreic actives. It may also comprise anti-inflammatory agents and/or calmatives.
Sebum-Regulating or Antiseborrhoeic Agents
By “sebum-regulating or antiseborrhoeic agents” are meant, in particular, agents capable of regulating the activity of the sebaceous glands.
They include, in particular, the following:
Preferred sebum-regulating agents which can be used in accordance with the invention are as follows:
Antimicrobial Agents
By antimicrobial agents are meant agents which have effects on the specific flora of greasy skin, such as, for example, P. acnes.
These effects may be alternatively bactericidal effects, or anti-bacterial-adhesion effects (preventing and/or reducing the adhesion of microorganisms), or effects acting on the biofilm of the bacteria to prevent them from multiplying.
They include, in particular, the actives and preservatives with antimicrobial activity that are cited in application DE10324567, incorporated into the present invention by reference.
Mention may also be made of the following: a hop cone extract (HOP CO2-TO extract from Flavex), an extract of St John's Wort (St John's Wort CO2-TO extract from Flavex), asiatic acid, extracts of Scutellaria baicolensis roots such as in BMB-CF from Naturogin, piroctone olamine, citrollic acid, sperillic acid, ethylhexyl glycerine (Sensiva from Shulke), gluceryl caprylate/caprate (Capmul from Abitec), calcium sodium phosphosilicate such as Bioactive glass powder from Schott, Actysse premier BG from Schott, silicon oxides from Ciba, metashines (derivatives of silver), bearberry extracts such as Gatuline equalizing from Gattefosse, 10-hydroxy-2-decanoic acid such as Acnacidol P from Vincience, sodium ursolate, azelaic acid, diiodomethyl p-tolyl sulphone or Amical Flowable from Angus, Malachite from Maprecos, Zincare from Elementis GmbH, arlatone dioic from Unichema; ellagic acid; 2,4,4′-trichloro-2′-hydroxydiphenyl ether (or triclosan), 1-(3′-4′-dichlorophenyl)-3-(4′-chloro-phenyl)urea (or triclocarban), 3,4,4′-trichlorocarbanilide, 3′,4′,5′-trichlorosalicylanilide, phenoxy-ethanol, phenoxypropanol, phenoxyisopropanol, hexamidine isethionate, metronidazole and its salts, miconazole and its salts, itraconazole, terconazole, econazole, ketoconazole, saperconazole, fluconazole, clotrimazole, butoconazole, oxiconazole, sulfaconazole, sulconazole, terbinafine, ciclopirox, ciclopiroxol-amine, undecylenic acid and its salts, benzoyl peroxide, 3-hydroxybenzoic acid, 4-hydroxybenzoic acid, phytic acid, N-acetyl-L-cysteine, lipoic acid, azelaic acid and its salts, arachidonic acid, resorcinol, octopirox or piroctone olamine, octoxyglycerine or octoglycerine, octanoylglycine (Lipacid C8G° from Seppic), caprylyl glycol, 10-hydroxy-2-decanoic acid, dichlorophenyl imidazole dioxolane and its derivatives described in patent application WO9318743, zinc derivatives and in particular zinc pidolate (Zincidone® from Solabia), copper derivatives, salicylic acid and other derivatives of salicylic acid, iodopropynyl butylcarbamate, 3,7,11-trimethyldodeca-2,5,10-trienol or farnesol, phytosphingosines; Sepicontrol® from Seppic, an argan extract such as Argapure LS9710°, Sebosoft® from Sederma, quaternary ammonium salts such as cetyltrimethylammonium salts, cetylpyridinium salts, ethanol, etc. and mixtures thereof.
As agents that prevent and/or reduce the adhesion of microorganisms, mention may especially be made of the following: phytantriol and its derivatives as described in patent application EP 1 529 523, plant oils such as wheat germ oil, calendula oil, castor oil, olive oil, avocado oil, sweet almond oil, peanut oil, jojoba oil, sesame oil, apricot kernel oil, sunflower oil, and macadamia oil, which are described in patent EP 1 133 979, or else other fatty substances such as disodium cocoamphodiacetate, oxyethylenated (7 EO) glyceryl cocoate, Poloxamers, hexadecenyl succinate 18, octoxyglyceryl palmitate, octoxyglyceryl behenate, dioctyl adipate, PPG-15 stearyl ether, and branched C12-C13 dialcohol tartrate described in patent EP 1 129 694.
In particular, as regards the propagation of P. acnes, mention may be made of pentylene glycol, nylon-66 (polyamide 66 fibres), rice bran oil, Celvol 540 PV alcohol (polyvinyl alcohol), Akorex L from Karlshamns, and fructose derivatives.
Mention may also be made of certain surfactants having an antimicrobial effect such as sodium cocoamphoacetate or disodium cocoamphodiacetate such as Miranol C2M CONC NP, betaines such as Genagen KB cocoyl betaine from Clariant, sodium lauryl ether sulphate such as Emal 270 D from Kao, decyl glucoside such as Plantacare 2000 UP, branched C12-C13 dialcohol malates such as Cosmacol EMI, propylene glycol monoesters such as propylene glycol monolaurate, monocaprylate or monocaprate, sodium lauroyl oat amino acid such as Proteol OAT, lauryl dimethylamine betaine such as Empigen BB/LS and also polyquaternary ammonium compounds such as Quaternium-24 or Bardac 2050 from Lonza and those described in L′Oreal patent FR 0 108 283.
As preferred antimicrobial agents, an agent will be used in the compositions of the invention that is selected from caprylyl glycol, zinc derivatives including zinc pidolate (Zincidone® from Solabia), copper derivatives, octoglycerine or octoxyglycerine, 10-hydroxy-2-decanoic acid, and mixtures thereof.
Calmatives
Examples of “calmatives” that can be used in the compositions of the invention include the following:
The packaging assembly according to the invention permits application of a cosmetic and/or dermatological composition according to the invention to the skin, especially the skin of the face and/or body.
The present invention further provides a cosmetic method of caring for the skin, especially for greasy and/or acne-affected and/or acne-prone and/or seborrhoeic skin, comprising the use, on the surface of the skin, of an assembly for packaging and application of a cosmetic and/or dermatological composition according to the invention.
The present invention additionally provides for the cosmetic use of an assembly for packaging and application of a cosmetic and/or dermatological composition according to the invention for caring for greasy skin and/or for skin exhibiting imperfections, especially having blackheads.
The invention compositions and combinations are preferably used by human subjects desirous of the benefits noted herein, subjects “in need of” these benefits. Such subjects are typically suffering from one or more of the conditions, symptoms, etc. addressed by the present invention, such as by self diagnosis or cosmetician or medical diagnosis, or are at recognized and appreciated risk of developing such conditions, etc. and who intentionally use the invention methods, compositions and combinations to treat, address, combat, prevent, etc. the effects of such conditions, etc. The application also clearly describes and supports the simple application of the invention composition on the skin and its integuments regardless of any purpose or intent.
The above written description of the invention provides a manner and process of making and using it such that any person skilled in this art is enabled to make and use the same, this enablement being provided in particular for the subject matter of the appended claims, which make up a part of the original description.
The above description is presented to enable a person skilled in the art to make and use the invention, and is provided in the context of a particular application and its requirements. Various modifications to the preferred embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the invention. Thus, this invention is not intended to be limited to the embodiments shown, but is to be accorded the widest scope consistent with the principles and features disclosed herein. In this regard, certain embodiments within the invention may not show every benefit of the invention, considered broadly.
All references, patents, applications, tests, standards, documents, publications, brochures, texts, articles, etc. mentioned herein are incorporated herein by reference. Where a numerical limit or range is stated, the endpoints are included. Also, all values and subranges within a numerical limit or range are specifically included as if explicitly written out.
The invention will now be described with reference to the examples below, which are given for illustration and not in limitation.
The composition below represents a composition in the form of an aqueous-alcoholic gel having a viscosity at 25° C. of 1 poise. This composition is subsequently packaged in a cosmetic and/or dermatological packaging and application assembly according to the invention.
Procedure:
Preparation of phase C: the neutralizing agent is dissolved in cold water.
Preparation of phase B1: form a paste of the 5-n-octanoylsalicylic acid and the salicylic acid in propylene glycol.
Using a cold deflocculating device, mix the actives of phase A1 to full homogenization (clear brown liquid) and then, in a vortex, incorporate the carbopol of phase A2, and then mix until a smooth gel is obtained.
Subsequently, at ambient temperature and with stirring, add phase B1, and then phase B2.
Subsequently add the fragrance.
Subsequently add phase C to neutralize the gel, with stirring.
Composition identical to that of Example 1(a), the only difference being the removal of 5-n-octanoyl-salicylic acid and its replacement by an equivalent amount of water.
The composition according to Example 1(a), packaged in a cosmetic and/or dermatological packaging and application assembly according to the invention, comprising a metal (stainless steel) applicator ball, is compared to a composition (packaged in strictly identical packaging) whose only difference is the absence of 5% of propylene glycol, thereby taking the total polyol content to 5% as against 10% in the composition according to Example 1(a).
When the ball had been first initiated in the course of a first application, it was observed that the composition containing only 5% of polyol gave rise to recrystallization of the salicylic acid after two months of storage at temperature (45° C.) on the surface of the ball. This phenomenon is characterized by the presence of small, disparate crystals on the surface of the ball, but also in the area of contact between the ball and its support (thereby giving rise to a blockage and a quality defect).
The level of polyol(s) present in the composition according to Example 1(a) allowed this problem to be avoided, hence producing easy rolling of the ball on itself.
| Number | Date | Country | Kind |
|---|---|---|---|
| 09 52105 | Apr 2009 | FR | national |
This application claims priority to U.S. provisional application 61/168,231, filed Apr. 10, 2009, and to French patent application 0952105 filed Apr. 1, 2009, both incorporated herein by reference.
| Number | Date | Country | |
|---|---|---|---|
| 61168231 | Apr 2009 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 12751483 | Mar 2010 | US |
| Child | 13826595 | US |
