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, 5% 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. An oil-in-water emulsion (E) for topical application comprising, for 100% of the weight of the emulsion:
from 70 to 90% by weight of a cosmetically acceptable aqueous phase (A) comprising, for 100% of the weight of the aqueous phase (A),
from 10% to 25% by weight of glycerol, and
from 10% to 30% by weight of a fatty phase (G) comprising, for 100% of the weight of the fatty phase (G),
from 5% to 20% by weight of a mixture (M1) of cyclic or acyclic, linear or branched saturated hydrocarbons, among which at least 95% by weight comprise from fifteen to nineteen carbon atoms, and
from 0.5% to 15% by weight of at least one oil-in-water surfactant;
wherein the oil-in-water emulsion (E) does not comprise any synthetic polymer comprising silicone functional groups or fluoro functional groups and does not comprise any compound of silicone nature,
wherein the effective amount of said mixture (M1) is such that the weight ratio between the glycerol and said mixture (M1) is less than or equal to 5 and greater than or equal to 2, and
wherein said mixture (M1) comprises for 100% of said M1 a weight,
either
branched alkanes of greater than or equal to 90% by weight and less than or equal to 100% by weight, of 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,
wherein from 95% by weight to 100% by weight of said cyclic, acyclic, linear or branched hydrocarbons comprise from fifteen to nineteen carbon atoms and
wherein up to 5% by weight of the cyclic or acyclic, linear or branched saturated hydrocarbons comprise less than fifteen carbons 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,
wherein 100% by weight of the cyclic or acyclic, linear or branched saturated hydrocarbons comprise less than fifteen carbons or more than nineteen carbon atoms.
2. An oil-in-water emulsion (E) for topical application according to claim 1 , wherein said mixture (M1) comprises for 100% of said M1 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.
3. An oil-in-water emulsion (E) for topical application according to claim 1 , wherein said mixture (M1) comprises for 100% of said M1 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.
4. The oil-in-water emulsion (E) for topical application according to claim 1 , wherein the effective amount of said mixture (M1) is such that the weight ratio between the glycerol and said mixture (M1) is equal to 2.
5. The oil-in-water emulsion (E) for topical application according to claim 4 , wherein said mixture (M1) comprises for 100% of said M1 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.
6. The oil-in-water emulsion (E) for topical application according to claim 4 , wherein said mixture (M1) comprises for 100% of said M1 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.
7. The oil-in-water emulsion (E) for topical application according to claim 1 , wherein said cosmetically acceptable aqueous phase (A) comprises, for 100% of said (A) a weight, 10% by weight of glycerol.
8. An oil-in-water emulsion (E) for topical application according to claim 7 , wherein said mixture (M1) comprises for 100% of said M1 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.
9. An oil-in-water emulsion (E) for topical application according to claim 7 , wherein said mixture (M1) comprises for 100% of said M1 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.