Abstract:
Sunscreen compositions having increased SPF contain at least one aqueous phase, at least one organic UV screening agent and/or at least one inorganic UV screening agent, notably at least one wetting agent, and an effective SPF-increasing amount of concave or annular particles of a silicone material, formulated into a physiologically acceptable medium therefor.
Abstract:
The present invention relates to a composition comprising an oil-in-water emulsion, wherein the emulsion comprises oily globules which are each provided with a lamellar liquid crystal coating and are dispersed in an aqueous phase, wherein each oily globule comprises at least one compound which is agriculturally active, and is individually coated with a monolamellar or oligolamellar layer comprising: (1) at least one non-ionic lipophilic surface-active agent, (2) at least one non-ionic hydrophilic surface-active agent and (3) at least one ionic surface-active agent, wherein the globules having a mean particle diameter of less than 800 nanometers.
Abstract:
The present invention relates to calibrated oily particles comprising at least one hydrophobic sunscreen and comprising at least one oily phase structured with at least one gelling polymer, characterized in that it has a mean size of less than or equal to 20 μm, in that the said structured oily phase has a melting point of greater than or equal to 40° C. and in that their circularity index is between 0.9 and 1.
Abstract:
Oil-in-water nanoemulsions comprising oil globules with an average size of less than 150 nm and comprising at least one oil, at least one amphiphilc lipid, and at least one nonionic polymer comprising at least one hydrophobic block and at least one hydrophilic block. Processes comprising such oil-in-water nanoemulsions.
Abstract:
Expression of a messenger RNA which encodes a protein which is expressed by differentiated cells, notably the cells of the skin or appendages thereof, is inhibited by topically administering to said differentiated cells a thus effective amount of at least one double-stranded RNA oligonucleotide, formulated into a topically applicable, physiologically acceptable medium therefor; such regime or regimen is useful for treating a variety of afflictions or conditions, e.g., combating the signs of skin aging, stimulating hair growth or retarding loss thereof, inhibiting cellular proliferation and/or differentiation, etc.
Abstract:
The present invention relates to nanocapsules consisting of a lipid centre forming or containing a lipophilic active principle, and of a water-insoluble continuous envelope comprising at least one polyester of poly(alkylene adipate) type as well as to cosmetic and/or dermatological compositions containing the said nanocapsules based on poly(alkylene adipate).
Abstract:
Oil-in-water nanoemulsions comprising oil globules with an average size of less than 150 nm and comprising at least one oil, at least one amphiphilc lipid, and at least one polyethylene glycol (PEG) derivative chosen from PEG esters and PEG ethers chosen from compounds of formula (I): R1—(O—CH2—CH2)n—OR2 (I) in which: R1 is chosen from linear and branched, saturated and unsaturated alkyl groups comprising from 8 to 30 carbon atoms and linear and branched, saturated and unsaturated acyl groups comprising from 8 to 30 carbon atoms, R2 is chosen from a hydrogen atom, linear and branched, saturated and unsaturated alkyl groups comprising from 1 to 30 carbon atoms, and linear and branched, saturated and unsaturated acyl groups comprising from 1 to 30 carbon atoms, and n is a number ranging from 80 to 350. Processes comprising such oil-in-water nanoemulsions.
Abstract:
The present invention provides a nanoemulsion, that includes: an oily phase dispersed in an aqueous phase; and at least one glycerol fatty ester surfactant which is solid at a temperature of less than or equal to 45° C.; wherein the oily phase includes oil globules having a number-average size of less than 100 nm; wherein the oily phase includes at least one oil having a molecular weight of greater than 400; and wherein a weight ratio of the oily phase to the surfactant ranges from 2 to 10. The invention also provides a process for making the nanoemulsion and methods for its use. Ideally, the emulsion is transparent and stable on storage. It can ideally contain large amounts of oil while retaining good transparency and good cosmetic properties. The nanoemulsion is particularly useful in the cosmetics and dermatological fields, in particular for moisturizing the skin and/or mucous membranes, as well as for treating the hair, and, in the ophthalmological field, as an eye lotion for treating the eyes.
Abstract:
A composition in the form of an emulsion comprising an oily phase which is dispersed, with the aid of a surfactant system, in a glycerol phase containing an oxidation-sensitive hydrophilic compound and optionally comprising at least one glycol in addition to the glycerol, characterized in that the surfactant system contains at least one surfactant capable of forming a lamellar phase on contact with the glycerol phase and having a melting point of greater than or equal to 35° C. The composition obtained has the appearance of a gel in which the hydrophilic compound is stabilized with respect to oxidation, this stabilization also being achieved under aerobic conditions. The invention also relates to the use of the said composition in order to tone the skin and/or to smooth out wrinkles and fine lines on the skin and/or to combat the harmful effects of UV radiation and pollution and/or to depigment the skin.
Abstract:
The invention relates to a composition, in particular a cosmetic or dermatological composition, having an aqueous dispersion of vesicles with a lipid membrane, characterized in that the lipid membrane contains at least one carbamate of following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are defined in the specification.