Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions – Two or more designated surfactant containing
Reexamination Certificate
1999-01-11
2001-09-25
Page, Thurman K. (Department: 1615)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
Two or more designated surfactant containing
C424S070100, C424S070110, C424S070120, C424S070210, C424S070220, C510S119000, C510S123000
Reexamination Certificate
active
06294160
ABSTRACT:
The present invention relates to novel cosmetic compositions with improved properties, intended for simultaneously cleaning and conditioning the hair, and comprising, in a cosmetically acceptable support, a washing base consisting of surfactants with specific detergent power, in which specific insoluble silicones and fatty acid esters of polyols are also present as conditioners and as suspension agents and/or pearlescent agents, respectively. The invention also relates to the use of the said compositions in the abovementioned cosmetic application.
It is common practice to use detergent hair compositions (shampoos) based essentially on standard surfactants of anionic, nonionic and/or amphoteric type in particular, but more particularly of anionic type, to clean and/or wash the hair. These compositions are applied to wet hair and the lather generated by massaging or rubbing with the hands removes, after rinsing with water, the various types of soiling which are initially present on the hair.
Admittedly, these base compositions have good washing power, but the intrinsic cosmetic properties associated with them nevertheless remain fairly poor, owing in particular to the fact that the relatively aggressive nature of such a cleaning treatment can, in the long run, lead to more or less pronounced damage to the hair fiber, this damage being associated in particular with the gradual removal of the lipids or proteins contained in or on the surface of this fiber.
Thus, in order to improve the cosmetic properties of the above detergent compositions, and more particularly those which are to be applied to sensitized hair (i.e. hair which has been damaged or made brittle, in particular under the chemical action of atmospheric agents and/or hair treatments such as permanent-waving, dyeing or bleaching), it is now common practice to introduce additional cosmetic agents known as conditioners into these compositions, these conditioners being intended mainly to repair or limit the harmful or undesirable effects induced by the various treatments or aggressions to which the hair fibers are subjected more or less repeatedly. These conditioners may, of course, also improve the cosmetic behavior of natural hair.
Among the conditioners most commonly used to date in shampoos, mention should be made of silicones and/or silicone derivatives, which give washed, dry or wet hair an ease of disentangling, softness and smoothness which are markedly better than that which can be obtained with the corresponding cleaning compositions from which they are absent. The suspending of the silicone and/or the pearlescent effect of the compositions can be obtained by means of acyl derivatives such as ethylene glycol stearate or diethylene glycol stearate (see in this respect EP 181,773 or EP 400,976).
However, despite the progress made recently in the field of shampoos based on silicone polymers, these shampoos are not really completely satisfactory, and as such a strong need still exists currently as regards being able to provide novel products which give better performance with respect to one or more of the cosmetic properties mentioned above.
The present invention is directed towards satisfying such a need.
Thus, after considerable research conducted in this matter, the Applicant has now found, entirely surprisingly and unexpectedly, that by using a specific washing base, ie. a washing base combining at least one surfactant of anionic type and at least one amphoteric surfactant of C
10
-C
14
alkylbetaine type comprising, as conditioners, specific and suitably selected silicones, as defined below, and C
16
-C
18
acid esters of polyols, as agents for suspending the said silicones and/or pearlescent agent for the composition, it is possible to obtain detergent compositions with excellent cosmetic properties, in particular as regards the ease of styling, hold, liveliness, smoothness and suppleness of treated hair, as well as very good intrinsic washing power.
All of these discoveries form the basis of the present invention
Thus, according to the present invention, novel detergent and conditioning hair compositions are now proposed, comprising, in a cosmetically acceptable medium, (A) a washing base comprising at least one anionic surfactant and at least one amphoteric surfactant of C
10
-C
14
alkylbetaine type, (B) a conditioning system comprising at least one insoluble silicone chosen from (i) polydialkylsiloxanes, (ii) polydiarylsiloxanes and (iii) polyalkylarylsiloxanes, the said silicone being introduced into the composition in non-emulsified form, and (C) a system for suspending the said silicone and/or for giving the composition a pearlescent effect, comprising at least one C
16
-C
18
acid ester of polyols
A subject of the invention is also the cosmetic use of the above compositions for cleaning and conditioning the hair.
However, other characteristics, aspects and advantages of the invention will emerge even more clearly on reading the description which follows, as well as the concrete, but in no way limiting, examples intended to illustrate it.
As indicated above, the essential components forming part of the composition of the haircare products according to the invention are (A) a washing base comprising (i) at least one anionic detergent surfactant and (ii) at least one amphoteric surfactant of C
10
-C
14
alkylbetaine type, (B) a conditioning system comprising the insoluble silicone(s) and (C) the C
16
-C
18
acid ester(s) of polyols for suspending the said silicone(s) and/or for giving the composition a pearlescent effect
A—WASHING BASE
The compositions in accordance with the invention necessarily comprise a washing base, which is generally aqueous.
The surfactant(s) forming the washing base comprise(s) one or more anionic surfactants and one or more C
10
-C
14
alkylbetaine amphoteric surfactants.
The minimum amount of washing base is that which is just sufficient to give the final composition satisfactory foaming and/or detergent power, and excessive amounts of washing base do not really provide any additional advantages.
Thus, according to the invention, the washing base can represent from 4% to 50% by weight, preferably from 10% to 35% by weight and even more preferably from 12% to 25% by weight, relative to the total weight of the final composition.
According to a preferred characteristic of the hair compositions according to the present invention, the washing base contains no surfactants other than the anionic surfactants and the amphoteric surfactants of C
10
-C
14
alkylbetaine type.
(i) Anionic Surfactant(s)
In the context of the present invention, their nature is not of truly critical importance.
Thus, as examples of anionic surfactants which can be used, alone or as mixtures, in the context of the present invention, mention may be made in particular (non-limiting list) of salts (in particular alkaline salts, especially sodium salts, ammonium salts, amine salts, amino alcohol salts or magnesium salts) of the following compounds: alkyl sulphates, alkyl ether sulphates, alkylamidoether sulphates, alkylarylpolyether sulphates, monoglyceride sulphates; alkyl sulphonates, alkyl phosphates, alkylamide sulphonates, alkylaryl sulphonates, &agr;-olefin sulphonates, paraffin sulphonates; alkyl sulphosuccinates, alkyl ether sulphosuccinates, alkylamide sulphosuccinates; alkyl sulphosuccinamates; alkyl sulphoacetates; alkyl ether phosphates; acyl sarcosinates; acyl isethionates and N-acyltaurates, the alkyl or acyl radical of all of these various compounds preferably containing from 12 to 20 carbon atoms, and the aryl radical preferably denoting a phenyl or benzyl group. Among the anionic surfactants which can also be used, mention may also be made of fatty acid salts such as the salts of oleic, ricinoleic, palmitic and stearic acids, coconut oil acid or hydrogenated coconut oil acid; acyl lactylates in which the acyl radical contains 8 to 20 carbon atoms. Use may also be made of weakly anionic surfactants, such as alkyl-D-galactosiduronic acids and their salts, and polyoxyalkylenated ether carboxylic acids
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
L'Oreal (S.A.)
Page Thurman K.
Seidleck Brian K.
LandOfFree
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