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(12) Patent Application Publication (10) Pub. No.: US 2010/0197805 A1 CASSIN (43) Pub

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(12) Patent Application Publication (10) Pub. No.: US 2010/0197805 A1 CASSIN (43) Pub US 20100 197805A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2010/0197805 A1 CASSIN (43) Pub. Date: Aug. 5, 2010 (54) COMPOSITION FOR IMPROVING THE (30) Foreign Application Priority Data SURFACE APPEARANCE OF THE SKN Jan. 27, 2009 (FR) ...................................... O95O491 (75) Inventor: Guillaume CASSIN, Villebon Sur Publication Classification Yvette (FR) (51) Int. Cl. A6II 47/30 (2006.01) Correspondence Address: A61O 19/00 (2006.01) NEUSTADT,OBLON, SPIVAK, L.L.P. MCCLELLAND MAIER & (52)52) U.S. Cl.C ..................................................... 514/772.1 194O DUKE STREET (57) ABSTRACT ALEXANDRIA, VA 22314 (US) The present invention relates to a cosmetic composition in the form of a paste, containing, in a physiologically acceptable (73) Assignee: LOREAL, Paris (FR) medium, at least 10% by weight, relative to its total weight, of filler(s), at least one silicone polyamide block copolymer (21) Appl. No.: 12/694,345 (PSPA) and at least one wax having a starting melting point of greater than or equal to 50° C. The present invention also (22) Filed: Jan. 27, 2010 relates to a cosmetic treatment method for improving the 9 Surface appearance of the skin, and in particular for reducing Related U.S. Application Data the visible and/or tactile irregularities of the skin, for instance the cutaneous microrelief, comprising at least the application (60) Provisional application No. 61/152,976, filed on Feb. of at least one composition as defined above to skin exhibiting 17, 2009. said irregularities. US 2010/O 197805 A1 Aug. 5, 2010 COMPOSITION FOR IMPROVING THE relative to its total weight, of filler(s), a silicone polyamide SURFACE APPEARANCE OF THE SKN block copolymer (PSPA) and at least one wax having a start ing melting point of greater than or equal to 50° C. REFERENCE TO PRIORAPPLICATIONS 0010. The subject matter of the present invention is also, 0001. This application claims priority to U.S. provisional according to another of its aspects, a cosmetic treatment application Ser. No. 61/152,976, filed Feb. 17, 2009; and to method for improving the Surface appearance of the skin, and French patent application 0950491, filed Jan. 27, 2009, both in particular for reducing the visible and/or tactile irregulari incorporated herein by reference. ties of the skin, for instance the cutaneous microrelief, com prising at least the application of at least one composition in FIELD OF THE INVENTION accordance with the invention to skin exhibiting said irregu larities. 0002 The present invention relates to a composition for 0011. The method according to the invention advanta improving the Surface appearance of the skin, in particular of geously results in a comfortable deposit on the skin, which facial skin. gives long-lasting concealing of the visible and/or tactile 0003. The composition according to the invention is more particularly for reducing the visible and/or tactile irregulari irregularities of the skin. ties of the skin, for instance the cutaneous microrelief, or even 0012. It is also effective for treating wrinkles and fine the deep wrinkles of the skin. lines, and most particularly the deep wrinkles of the skin, skin 0004 Additional advantages and other features of the herein and above referring to human skin. present invention will be set forth in part in the description 0013 As specified above, the compositions according to that follows and in part will become apparent to those having the invention are in the form of a paste. ordinary skill in the art upon examination of the following or 0014. The term “paste’ is herein intended to mean a com may be learned from the practice of the present invention. The position, the Viscosity of which can be measured, as opposed advantages of the present invention may be realized and to the solid structure of a rod or stick, the viscosity of which obtained as particularly pointed out in the appended claims. cannot be measured. As will be realized, the present invention is capable of other 0015 The compositions according to the invention have and different embodiments, and its several details are capable characteristic rheological parameters, comprising the yield of modifications in various obvious respects, all without point, the elastic modulus and the Viscous modulus. The departing from the present invention. The description is to be destructuring yield or yield point to stress of the composi regarded as illustrative in nature, and not as restrictive. tions is defined as the pressure required to cause a macro scopic flow of the composition; it can be determined by BACKGROUND OF THE INVENTION scanning under stress, for example using a Haake applied 0005. During the ageing process, the structure and func stress CS150 rheometer at a temperature of 25° C., as tions of the skin become impaired. The main clinical signs described in example 1. observed are the appearance of wrinkles and fine lines asso 0016. Moreover, the elastic modulus and the viscous ciated with slackening of the skin. Those skilled in the art modulus of the compositions may be measured for a stress know that such slacking may be corrected immediately by frequency of 1 Hertz, in the “linear viscoelasticity' Zone applying a tensioning agent to the skin. The term “tensioning defined by the fact that the stress applied during the measure agent' is intended to mean a compound capable of having a ment is less than the destructuring yield stress for the com tensioning effect, i.e. able to make the skin taut and, through position. this tensioning effect, to Smooth out the skin and immediately 0017. In general, the compositions according to the inven reduce the wrinkles and fine lines, or even make them disap tion are characterized by an elastic modulus of greater than pear. 5000 Pascals, preferably greater than 10 000 Pascals, and 0006 To date, the use of numerous tensioning agents for even more preferably greater than 20 000 Pascals, and a treating wrinkles is known to those skilled in the art. Unfor tangent value (Ö), given by the ratio of the Viscous modulus to tunately, the effectiveness of Such tensioning agents disap the elastic modulus, of less than 0.2, at 25° C. for a stress pears over the course of the day, the tensioning film breaking frequency of 1 Hertz. up during the expressions made by the face. Furthermore, the 0018. The yield point of the compositions according to the effectiveness of these tensioning agents on the deepest invention is greater than 50 Pascals, preferably greater than wrinkles of the face is poor and not very long-lasting. 100 Pascals, and even more preferably greater than 500 Pas 0007 Consequently, there exists a great need for cosmetic cals. compositions which make it possible to notably reduce even 0019 For applied stresses below the yield point, the vis the deepest wrinkles, or even Scars, on the face, throughout cosity of the compositions according to the invention is the day. greater than 100 000 Pa's and preferably greater than 500 000 PaS. DETAILED DESCRIPTION OF THE PREFERRED 0020. The viscosity of the compositions according to the EMBODIMENTS invention is greater than or equal to 5000 Pa's for a shear rate 0008. The present invention provides a novel composition equal to 10s', and preferably greater than 10000 Pas, and for obtaining a comfortable deposit on the skin which gives in particular less than 10 000 000 Pas, the viscosity being long-lasting concealing of the wrinkles and imperfections of measured at 25°C. with a Haake Rheostress RS 150 instru the face. ment in a cone-plate configuration under a stress. 0009. Thus, a main subject matter of the present invention 0021. With regard to their viscosity, the compositions is a composition in the form of a paste, containing, in a according to the invention exhibit advantageous deformabil physiologically acceptable medium, at least 10% by weight, ity, elasticity and manageability, making it possible to carry US 2010/O 197805 A1 Aug. 5, 2010 out modelling of the skin, in particular of the facial skin, may contain one or more oxygen, Sulphur and/or nitro which is therefore effective for reducing the cutaneous gen atoms in their chain, and which may be partially or microrelief thereof. totally substituted with fluorine atoms, 0022. For the purpose of the invention, the expression 0037 C to Caryl groups optionally substituted with “visible and/or tactile irregularities of the skin' is intended to one or more C to C alkyl groups, denote the signs of skin ageing, for instance wrinkles, in 0038 polyorganosiloxane chains optionally containing particular deep wrinkles, and fine lines, and also acne or one or more oxygen, Sulphur and/or nitrogen atoms, chickenpox marks and Scars. 0039) 3) the X, which may be identical or different, rep 0023 The term “deep wrinkles' is intended to denote the resent a C to Co. linear or branched alkylene diyl group. wrinkles due to skin ageing, as opposed to “expression which may contain one or more oxygen and/or nitrogen wrinkles' in particular induced, for their part, by dermocon atoms in its chain, traction of the facial muscles. It is the tensions responsible for 0040 4)Y is a saturated or unsaturated, C to Cso, aryla expression wrinkles which, by pulling on the deep face of the lkylene, alkylarylene, cycloalkylene, arylene, or linear or dermis, have a tendency to become hollow and to form the branched alkylene divalent group which may comprise one or deep wrinkles over time. more oxygen, Sulphur and/or nitrogen atoms and/or bear, as 0024. The present invention is more particularly dedicated Substituent, one of the following atoms or groups of atoms: to the cosmetic treatment of wrinkles, in particular of deep fluorine, hydroxyl, C.
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