Shell-free stable dispersion
A dispersion comprises a dispersed phase comprising drops and a continuous aqueous phase, preferably in gel form, wherein the drops comprise a fatty phase comprising at least one lipophilic gelling agent, wherein: the fatty phase has a melting point between 50° C. and 100° C., preferably between 60° C. and 90° C., and, at room temperature and atmospheric pressure, meets the following physicochemical criteria: a hardness (x) of between 2 and 14 N, preferably between 2.5 and 12 N, more preferably between 3 and 9 N, and most preferably between 4 and 6 N; and an adhesiveness (y) greater than or equal to −2 N, and better still, greater than or equal to −1 N, and in particular greater than or equal to −0.6 N; and the dispersion does not comprise amodimethicone.
1 . A dispersion comprising a dispersed phase comprising drops and a continuous aqueous phase, wherein the drops comprise a fatty phase comprising at least one lipophilic gelling agent, wherein:
the fatty phase has a melting point between 50° C. and 100° C. and, at room temperature and atmospheric pressure, meets the following physicochemical criteria:
a hardness (x) of between 2 and 14 N;
an adhesiveness (y) greater than or equal to −2 N; and
the dispersion does not comprise amodimethicone.
2 . The dispersion according to claim 1 , wherein the fatty phase has a cohesiveness (z) of less than or equal to 40.
3 . The dispersion according to claim 1 , wherein the dispersion does not comprise a shell.
4 . The dispersion according to claim 1 , wherein the drops in the dispersed phase have a diameter greater than or equal to 100 μm and represent a volume greater than or equal to 60% of a total volume of the dispersed phase, and/or at least 60% of the drops in the dispersed phase have an average diameter greater than or equal to 100 um.
5 . The dispersion according to claim 1 , wherein the lipophilic gelling agent is selected from organic or inorganic, polymeric or molecular lipophilic gelling agents; solid fats at ambient temperature and pressure; and mixtures thereof.
6 . The dispersion according to claim 1 , comprising from 0.5% to 30% by weight of lipophilic gelling agent(s) relative to a total weight of the fatty phase.
7 . The dispersion of claim 1 , wherein the continuous aqueous phase comprises at least one hydrophilic gelling agent.
8 . The dispersion according to claim 7 , comprising from 0.0001% to 20% by weight of hydrophilic gelling agent(s) based on a total weight of the continuous aqueous phase.
9 . The dispersion of claim 1 , comprising from 1% to 60% by weight of dispersed fatty phase relative to a total weight of the dispersion.
10 . The dispersion of claim 1 , wherein the dispersion does not comprise surfactants.
11 . The dispersion of claim 1 , wherein the dispersion does not comprise: dextrin ester and fatty acid(s), hydrophobically treated silica, acrylates/C10-30 alkyl acrylate crosspolymer, and/or cetyl ethylhexanoate.
12 . A method of preparing a dispersion according to claim 1 , comprising at least the following steps:
a) heating an oily fluid to a temperature from 50° C. to 150° C.;
b) optionally heating an aqueous fluid to a temperature from 50° C. to 150° C.;
c) bringing the aqueous fluid and the oily fluid into contact; and
d) forming drops of fatty phase, consisting of the oily fluid, dispersed in a continuous aqueous phase, consisting of aqueous fluid,
wherein:
the oily fluid comprises at least one lipophilic gelling agent and optionally at least one oil and has a melting point between 50° C. and 100° C., and, at room temperature and atmospheric pressure, meets the following physicochemical criteria:
a hardness (x) of between 2 and 14 N;
an adhesiveness (y) greater than or equal to −2 N;
the oil fluid further being free of amodimethicone; and
the aqueous fluid comprises at least water and, optionally, at least one hydrophilic gelling agent.
13 . The method according to claim 12 , wherein step d comprises forming drops of oily fluid at an outlet of a first conduit opening into the aqueous fluid.
14 . The method according to claim 13 , where in aqueous fluid is circulated in a second conduit, the outlet of the first conduit opening into the second conduit.
15 . A dispersion obtained by a method according to claim 12 .
16 . A composition comprising at least one dispersion of claim 1 , optionally in combination with at least one physiologically acceptable medium.
17 . A non-therapeutic method for a cosmetic treatment of a keratinous material, comprising a step of applying at least one dispersion to said keratinous material, according to claim 1 .
18 . A non-therapeutic method for a cosmetic treatment of a keratinous material, comprising a step of applying to said keratinous material a composition according to claim 16 .