Method for improving the sensorial properties of oil-in-water emulsions, to reduce the adhesive effect of such glycerin-based oil-in-water emulsions
Disclosed is a method for improving the sensorial properties of an oil-in-water type emulsion for topical application, including, for 100% of its mass, 1% to 30% by weight of glycerol, characterised in that the oil-in-water type emulsion for topical application includes an effective quantity of a mixture of saturated cyclic or acyclic, linear or branched hydrocarbons, of which at least 95% by weight have between fifteen and nineteen carbon atoms. Also disclosed is a new oil-in-water type emulsion for topical use, including the mixture, and to the use of same in cosmetics.
1. A method for reducing a tacky effect of an oil-in-water emulsion for topical use (E 0 ) comprising, for 100% of said E 0 a weight:
from 10% to 25% by weight of glycerol,
from 90% to 70% by weight, of a cosmetically acceptable aqueous phase (A 0 );
from 10% to 30% by weight of a fatty phase (G 0 ), said fatty phase (G 0 ) comprising, for 100% of said G 0 a weight, from 2% to 8% by weight of at least one oil-in-water surfactant and from 88% to 99% by weight, of at least one oil and/or one wax,
wherein said emulsion (E 0 ) does not comprise any synthetic polymers comprising silicone or any third compound of silicone nature,
wherein an effective amount of a mixture (M 1 ) of cyclic or acyclic, linear or branched saturated hydrocarbons, among which at least 95% by weight comprise from fifteen to nineteen carbon atoms, is incorporated into said oil-in-water type emulsion for topical use (E 0 ),
wherein said effective amount of a mixture (M1) is from 5% to 20% by weight of said oil-in-water emulsion, and the weight ratio between the glycerol and said mixture (M 1 ) is less than or equal to 5 and greater than or equal to 2, and wherein said mixture (M 1 ) comprises, for 100% of its weight either:
branched alkanes of greater than or equal to 80% by weight and less than or equal to 100% by weight, linear alkanes of greater than or equal to 0% by weight and less than or equal to 15% by weight, and cycloalkanes of greater than or equal to 0% by weight and less than or equal to 5%, by weight and up to 5% by weight of said cyclic, acyclic, linear or branched hydrocarbons comprise less than fifteen carbon atoms or more than nineteen carbon atoms; or
branched alkanes of greater than or equal to 40% by weight and less than or equal to 100% by weight, linear alkanes of greater than or equal to 0% by weight and less than or equal to 20% by weight and cycloalkanes of greater than or equal to 0% by weight and less than or equal to 40% by weight, and 100% by weight of said cyclic or acyclic, linear or branched hydrocarbons comprise from fifteen to nineteen carbon atoms.
2. The method according to claim 1 , wherein said mixture (M 1 ) comprises, for 100% of said M 1 a weight either:
branched alkanes of greater than or equal to 90% and less than or equal to 100% by weight linear alkanes of greater than or equal to 0% by weight and less than or equal to 10% by weight and cycloalkanes of greater than or equal to 0% by weight and less than or equal to 1% by weight, and up to 5% by weight of said cyclic, acyclic, linear or branched hydrocarbons comprise less than fifteen carbon atoms or more than nineteen carbon atoms; or
branched alkanes of greater than or equal to 50% by weight and less than or equal to 100% by weight linear alkanes of greater than or equal to 0% by weight and less than or equal to 15% by weight, and cycloalkanes of greater than or equal to 0% by weight and less than or equal to 35% by weight, and 100% by weight of said cyclic or acyclic, linear or branched hydrocarbons comprise from fifteen to nineteen carbon atoms.
3. The method according to claim 2 , wherein said mixture (M1) comprises for 100% of said M 1 a weight:
i) 3.7% of linear alkanes comprising from fifteen to nineteen carbon atoms,
ii) 96% of isoalkanes comprising from fifteen to nineteen carbon atoms, and
iii) 0.3% of cycloalkanes comprising from fifteen to nineteen carbon atoms.
4. The method according to claim 2 , wherein said mixture (M1) comprises for 100% of said M 1 a weight:
i) 13.20% of linear alkanes comprising from fifteen to nineteen carbon atoms,
ii) 55.00% of isoalkanes comprising from fifteen to nineteen carbon atoms, and
iii) 31.80% of cycloalkanes comprising from fifteen to nineteen carbon atoms.