MULTI-PHASE COSMETIC COMPOSITION COMPRISING AT LEAST TWO IMMISCIBLE OILY PHASES

Abstract

A multiphase cosmetic composition that includes two immiscible oily phases defined by specific solubility parameters at room temperature. Also, the use the multiphase cosmetic composition in the cosmetic field or the dermatological field, in particular for removing makeup from, cleansing, and/or caring for the skin, the eyes, and/or the skin appendages.

Claims

1-16. (canceled)

17. A multiphase cosmetic composition comprising: a first polar oily phase characterized by a surface tension greater than 30 mN/m, and having the following solubility parameters at room temperature: δ.sub.p of between 6 and 7.8 and δ.sub.h of between 3.7 and 10.1, a second apolar oily phase, immiscible with the first oily phase, characterized by a surface tension of less than 28 mN/m, and having different δ.sub.p and δ.sub.h solubility parameters at room temperature than those of the polar solvent used in the first oily phase, said composition being surfactant-free.

18. The composition according to claim 17, wherein the polar solvent or solvents used in the first oily phase have a Sa solubility parameter at room temperature of between 16 and 19.

19. The composition according to claim 17, wherein the apolar solvent or solvents used in the second oily phase have the following solubility parameters at room temperature: δ.sub.p of between 0 and 1, preferably between 0.01 and 0.5, and more preferably 0.1 δ.sub.h of between 0 and 1, preferably between 0.01 and 0.5, and more preferably 0.1 and δ.sub.d of between 15.6 and 15.9.

20. The composition according to claim 17, wherein the solubility parameters at room temperature of the polar and apolar solvents are such that $\sqrt{\begin{array}{c}{\left(\delta \mathrm{dpolar}-\delta \mathrm{dapolar}\right)}^2+{\left(\delta \mathrm{ppolar}-\delta \mathrm{papolar}\right)}^2+\\ {\left(\delta \mathrm{hpolar}-\delta h2\mathrm{apolar}\right)}^2\end{array}}$ is greater than 3.5.

21. The composition according to claim 17, wherein the polar solvent or solvents of the first oily phase are selected among dipropylene glycol dibenzoate, propylene glycol dibenzoate, triethyl citrate, castor oil, or a mixture thereof.

22. The composition according to claim 17, wherein the apolar solvent or solvents of the second oily phase are selected among hydrocarbons, polymers obtained from a hydrocarbon monomer, or a mixture thereof.

23. The composition according to claim 22, wherein the hydrocarbons or the polymers obtained from a hydrocarbon monomer are selected among isohexadecane, isododecane, undecane, tridecane, polyisobutene, squalane, or a mixture thereof.

24. The composition according to claim 17, comprising natural oils of moderate polarities such as argan oil, meadowfoam seed oil, jojoba oil, or a mixture thereof, subject to not modifying the δ.sub.p and δ.sub.h solubility parameters at room temperature of the first and second oily phases.

25. The composition according to claim 17, comprising a third aqueous phase, immiscible with the first and second oily phases.

26. The composition according to claim 23, wherein the aqueous phase comprises water, and optionally at least one polyol and/or at least one salt.

27. The composition according to claim 24, wherein the polyol is selected among propylene glycol, butylene glycol, pentanediol, hexylene glycol, polyethylene glycols, neopentyl glycol, glycerol, and preferably the polyol is glycerol.

28. The composition according to claim 17, comprising a cosmetic active ingredient, preferably selected among vitamins, antioxidants, moisturizing agents, anti-pollution agents, keratolytic agents, astringents, anti-inflammatories, wightening agents, microcirculation-promoting agents, dyes, softening agents, buffers, UV filters (or sunscreens), fragrances, pH adjusters (for example citric acid or sodium hydroxide), and mixtures thereof.

29. A multiphase cosmetic composition comprising: a first polar oily phase comprising dipropylene glycol dibenzoate, propylene glycol dibenzoate, triethyl citrate, castor oil, or a mixture thereof, a second apolar oily phase, immiscible with the first oily phase, comprising hydrocarbons, polymers obtained from a hydrocarbon monomer, or a mixture thereof, said composition being surfactant-free.

30. A skincare product, comprising a composition as defined in claim 17.

31. The skincare product according to claim 30, wherein it constitutes an anti-aging serum, preferably having an exfoliating effect, or a makeup remover for the face, in particular for the eyes and/or lips.

32. A skin care process, consisting of applying to the skin a composition as defined claim 17 and/or a skincare product comprising said composition.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0092] FIG. 1 illustrates the method of preparing a composition according to the invention.

[0093] The following examples of compositions according to the invention are provided for illustrative purposes and are not limiting. The quantities are given as % by weight unless otherwise stated.

EXAMPLES

Example 1: Anti-Aging Serum

[0094] A three-phase composition having the following composition was prepared.

TABLE-US-00005 TABLE 5 Content INCI name (% by weight) Aqueous Demineralized water 41.860% phase NATURAL AHA COMPLEX 10.000% Chlorhexidine digluconate 0.22% Water-soluble active ingredient 4.04% Glycerin 3.00% Butylene glycol 4.000% Dye 0.03% L-ARGININE 2.75% First oily Castor oil 15.00% phase Fragrance 0.10% Second oily Squalane 9.00% phase CETIOL ULTIMATE 10.00% (undecane & tridecane)

[0095] Each phase was prepared cold, separately, by mixing the ingredients of each phase using a magnetic stir bar. The second oily phase was then introduced into the first oily phase, then the mixture was introduced into the aqueous phase.

[0096] The serum thus obtained is in the form of a composition which visually has three distinct immiscible phases. It has an exfoliating/peeling effect when applied to the skin.

Example 2: Facial Makeup Remover

[0097] A three-phase composition having the following composition was prepared.

TABLE-US-00006 TABLE 6 Content INCI name (% by weight) Aqueous Demineralized water 64.578% phase Chlorhexidine digluconate 0.220% Glycerin 4.000% P extract G (active ingredient) 0.200% L-ARGININE 0.002% First oily Castor oil 10.000% phase Active 0.100% Second oily Cetiol Ultimate 6.000% phase (undecane and tridecane) Squalane 9.000% Additional Limnanthes Alba Seed Oil 7.000% oils Jojoba oil, color removed 10.000%

[0098] Each phase was prepared cold, separately, by mixing the ingredients of each phase using a magnetic stir bar. The second oily phase was then introduced into the first oily phase, then the mixture was introduced into the aqueous phase.

[0099] The facial makeup remover thus obtained takes the form of a composition visually having three very distinct immiscible phases. It gently removes makeup from the skin, eyes, and lips.