초록 ▼

The present invention relates to a cosmetic or dermatological composition comprising an emulsion of oil-in-water type formed of oily globules which are each provided with a lamellar liquid crystal coating and are dispersed in an aqueous phase. Each oily globule containing at least one lipophilic com

The present invention relates to a cosmetic or dermatological composition comprising an emulsion of oil-in-water type formed of oily globules which are each provided with a lamellar liquid crystal coating and are dispersed in an aqueous phase. Each oily globule containing at least one lipophilic compound which is cosmetically or dermatologically active is individually coated with a monolamellar or aligolamellar layer obtained from at least one lipophilic surface-active agent, from at least one hydrophilic surface-active agent and from at least one ionic amphiphilic lipid imparting to the emulsion a pH ranging from 5.5 to 7.5, the coated oily globules having a mean diameter of less than 500 nanometers.

대표청구항 ▼

[ What is claimed as new and is desired to be secured by Letters Patent of the United States is:] [1.] Cosmetic or dermatological composition comprising an oil-in-water emulsion comprising oily globules which are each provided with a lamellar liquid crystal coating and are dispersed in an aqueous ph

[ What is claimed as new and is desired to be secured by Letters Patent of the United States is:] [1.] Cosmetic or dermatological composition comprising an oil-in-water emulsion comprising oily globules which are each provided with a lamellar liquid crystal coating and are dispersed in an aqueous phase, wherein each oily globule containing at least one lipophilic compound which is cosmetically or dermatologically active is individually coated with a monolamellar or oligolamellar layer obtained from at least one lipophilic surface-active agent, from at least one hydrophilic surface-active agent and from at least one ionic amphiphilic lipid imparting to the emulsion a pH ranging from 5.5 to 7.5, the coated oily globules having a mean diameter of less than 500 nanometers;wherein the lipophilic surface-active agent is selected from the group consisting of sucrose distearate, diglyceryl distearate, tetraglyceryl tristearate, decglyceryl decastearate, diglyceryl monostearate, hexaglyceryl tristearate, decaglyceryl pentastearate, sorbitan monostearate, sorbitan tristearate, diethylene glycol monostearate, the ester of glycerol and palmitic and stearic acids, polyoxyethylenated monostearate 2 EO containing 2 ethylene oxide units, glyceryl mono- and dibehenate and pentaerythritol tetrastearate;wherein the hydrophilic surface-active agent is selected from the group consisting of polyoxyethylenated sorbitan monostearate 4 EO, polyoxyethylenated sorbitan tristearate 20 EO, polyoxyethylenated sorbitan tristearate 20 EO, polyoxyethylenated monostearate 8 EO, hexaglyceryl monostearate, polyoxyethylenated monostearate 10 EO, polyoxyethylenated distearate 12 EO and polyoxyethylenated methylglucose distearate 20 EO; andwherein the ionic amphilic lipid is selected from the group consisting of alkali metal salts of dicetyl phosphate, alkali metal salts of dimyristyl phosphate, alkali metal salts of cholesteryl sulphate, alkali metal salts of cholesteryl phosphate, the mono- and disodium salts of acylglutamic acids, phospholipids and alkylsulphonic derivatives of formula: [ STR 2 ] in which R represents the radicals C.sub.16 H.sub.33 and C.sub.18 H.sub.37, taken as a mixture or separately, and M is an alkali metal.