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Ultrafine emulsion containing a haloalkynyl derivative
| Details |
Inventors: Senee, Jerome;
Assignee: L'Oreal (Paris, FR)
Primary Examiner: Wang; Shengjun
Assistant Examiner:
Attorney, Agent or Firm: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
A composition in the form of an ultrafine oil-in-water emulsion in which the mean size of the oil globules ranges from 50 nm to 1000 nm containing a haloalkynyl derivative, preferably 3-iodo-2-propynyl butylcarbamate. |
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DETAILED DESCRIPTION OF THE INVENTION It has been discovered, surprisingly, that the addition of a haloalkynyl derivative makes it possible to obtain a stable ultrafine O/W emulsion.
Such stable emulsions are, for example, without the appearance of creaming and without phase separation or deposition, even if the emulsion is very fluid.
The ultrafine O/W emulsions of the present invention possess, in comparison with conventional O/W emulsions, in addition to their greater stability, substantially improved cosmetic properties, such as softness, freshness and comfort on application, as well as a novel feeling of lusciousness and of slip.
The present invention provides a composition for topical application in the form of an oil-in-water emulsion comprising an oily phase dispersed in an aqueous phase, in which the mean size of the oil globules ranges from 50 nm to 1000 nm (nanometers), and a haloalkynyl derivative.
Preferably, the composition has a viscosity ranging from 1 to 20 mPas at 25.
degree.
C.
This composition preferably constitutes a cosmetic or dermatological composition.
The oil-in-water emulsions of the present invention are capable of being obtained according to the phase-inversion emulsification technique, although it should be recognized that the emulsions can be obtained by any suitable production method yielding O/W emulsions having the desired characteristics.
The compositions of the present invention preferably comprise a physiologically acceptable medium.
The term "physiologically acceptable medium" is understood to mean a medium suitable for topical application to the skin or superficial body growths, that is to say compatible with the skin, mucous membranes, lips, hair and nails.
According to preferred embodiments, the present invention makes it possible to obtain very fluid and stable ultrafine emulsions.
The term "very fluid" is understood here to mean compositions having a viscosity ranging from 1 to 20 cPoises (1 to 20 mPas) and preferably ranging from 1 to 15 cPoises (1 to 15 mPas), the viscosity being measured at ambient temperature (25
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