Drug – bio-affecting and body treating compositions – Manicure or pedicure compositions
Patent
1997-10-14
1999-12-14
Cook, Rebecca
Drug, bio-affecting and body treating compositions
Manicure or pedicure compositions
424 701, 424 707, 424 7011, 424484, 424486, 424488, A61K 704
Patent
active
060013389
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to the use of a polymer which forms a film in aqueous solution or in aqueous dispersion and of an aqueous suspension of microfibrils of natural origin in the form of elongate rigid particles, as a composite coating agent for the hair, the eyelashes, the eyebrows or the nails, in, and for the preparation of, a cosmetic or dermatological composition.
Cosmetic or dermatological compositions are mainly in a thickened liquid form. This type of presentation is very suitable for consumers: it usually corresponds to a practical preoccupation for the formulator: facilitating the uptake of the product from its packaging without any significant loss, limiting the diffusion of the product to the local area of treatment, being able to spread the product uniformly over the local area of treatment and being able to use it in amounts which are sufficient to obtain the desired cosmetic or dermatological effect.
This aim is of prime concern for formulations such as hair compositions, which need to be able to spread and distribute themselves uniformly along the keratin fibres, and not to run down the forehead, the nape of the neck, the face or into the eyes. This type of presentation is particularly sought for hair styling, maintenance and/or fixing products.
This aim is also important for aqueous compositions for making up the eyelashes or the eyebrows, which need to spread and distribute themselves uniformly along the eyebrows or eyelashes and not to run down the face, into the eyes or over the eyelids.
This aim is also important for aqueous nail varnishes which need to spread and distribute themselves uniformly over the nail without running onto the finger.
In particular, as regards hair styling and/or maintenance, transparent or translucent aqueous hair gels which can be taken up easily with the fingers without feeling sticky and which can spread easily onto the hair and form, after drying, a uniform and continuous sheath along the hair, without feeling sticky, are sought. The aqueous gels for hair styling and/or maintenance must also lead to a deposit having a sufficiently high adhesion to the hair during drying of the gel, at the risk of providing the hair with insufficient mechanical properties, too low a flexural strength, poor hold of the hair due to the sheath becoming partially or totally unstuck. The sheath obtained by drying the gel and the maintenance of the hairstyle resulting therefrom must also be resistant to ambient moisture (humid atmosphere, rain, swimming baths, etc.) and must be readily eliminated with shampoo in most of the applications.
Most of the standard hair gels, for example those based on film-forming acrylic polymers of the Carbopol or Pemulen type, have a tendency to form a heterogeneous and non-continuous deposit on the hair. They moreover feel sticky when taken up and on the hair. Furthermore, their water resistance and water moisture resistance is insufficient.
Other standard hair gels, in particular those based on guar gum, form a sheath around the strand of hair which tends to become unstuck in places during drying of the gel. Their resistance to water and to water moisture is insufficient.
The Applicant has discovered, unexpectedly, that the use of an aqueous suspension of specific microfibrils of natural origin in combination with a water-soluble film-forming polymer in solution or a water-insoluble film-forming polymer in dispersion makes it possible to obtain hair formulations in thickened form and in particular in the form of transparent or translucent aqueous gels which may be taken up easily with the fingers without feeling sticky, which can spread easily over the hair by virtue of a good rheo-fluidifying effect and which can form, after drying, a homogeneous and continuous sheath along the hair without feeling sticky. The sheath thus obtained by this combination is sufficiently adhesive on the hair during drying; furthermore, it is resistant to the mechanical attacking factors of the environment (friction, currents of air) as well as to ambient moist
REFERENCES:
patent: 4891213 (1990-01-01), Gordon et al.
A. Boldizar et al., "Prehydrolyzed Cellulose as Reinforcing Filler for Thermoplastics", Intern. J. Polymeric Mater., 11(4) :229-262 (1987).
"L'Oreal"
Cook Rebecca
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