GB2259015A - Three-phase lotion for pharmaceutical or cosmetic use - Google Patents

Abstract

A three-phase lotion suitable for application to the body, which comprises an upper oily phase, an intermediate silicone phase and a lower aqueous phase, the lotion also comprising at least one volatile silicone.

Description

2 2 590 1 S 4_ THREE-PHASE LOTION SUITABLE FOR PHARMACEUTICAL OR COSMETIC

BODILY USE The present invention relates to a three-phase lotion suitable for pharmaceutical or cosmetic bodily use.

Multi-phase lotions are known, especially as vehicles for cosmetic or pharmaceutical active principles.

They comprise at least two fluid phases which are mutually insoluble, which has the result that they exist at rest in the form of separate layers.

The user of such a lotion, before applying it to the body, agitates it for a few seconds in order to produce an emulsion. After use,.the separate phases re-form over a time which is more or less variable.

The advantage of the multi-phase lotions is their ability to contain, for example in the fatty phase, a lipophilic active principle, and at the same time to contain, in the aqueous phase, a hydrophilic active principle, without the two active principles being able to come into contact at rest. This is important in the case of active principles which are incompatible with each other or with certain vehicles.

British Patent Application Publication No. 2,206,048, for example, describes what are principally twophase lotions consisting of an aqueous phase containing polyols and/or alcohols, an oily phase containing volatile silicones and a surface-active agent which can be of the silicones and a surface-active agent which can be of the dinethicone copolyol type.

However, the two-phase lotions have disadvantages linked to a large interfacial surface between the two phases, which does not completely prevent the undesired interaction between the various active principles.

Three-phase lotions have thus been proposed, which have an intermediate phase consisting of silicone oils, especially polydimethylsiloxanes (hereinafter referred to as PDMSs), which are insoluble both in the upper fatty phase and in the lower aqueous phase.

These lotions are described in German Patent Application Publication,No. 3,009,763 which illustrates, in Example 4, a lotion consisting of an aqueous phase, a hydrophobic phase comprising PDMSs and a third phase of fatty character consisting of liquid paraffin, 2-octyldodecanol and decyl oleate.

Moreover, a three-phase cosmetic lotion is described in Japanese Patent Application Publication No.57-144,210.

Three-phase lotions of this type, however, have a certain number of disadvantages, especially as regards the long time for separation of the phases aftet use and as regards their cosmetic effect: the presenbe of,a layer of intermediate silicone oil can give, to:'.-t'he usr, an unpleasant greasy feeling on the skin depending bii the type and concentration of the oil.

W Indeed, it is desirable that this type of lotion exhibits, starting from the emulsified state, a separation of the phases in a time period which is not less than 5 min, in order to make it possible for the user to use the emulsion without being constantly obliged to move the container. Additionally, it is desirable that this time period be less than 24 h in order that the aesthetic visual effect of the reformation of the three phases is produced in a reasonable time period.

It has now been discovered, in an unexpected and surprising way, that the addition to such a three-phase lotion of at least one volatile silicone, preferably to the silicone phase of the lotion, reduces the separation time of the two upper phases of the three-phase lotion and, at the same time, provides the product with a freshening.effect when applied to the skin.

The present invention provides a three-phase lotion suitable for application to the body, which comprises an upper oily phase, an intermediate silicone phase and a lower aqueous phase, the lotion also comprising at least one volatile silicone.

The present invention also provides a process for the preparation of a lotion as defined above which comprises mixing together the components making up the oily phase, the silicone phase and the aqueous phase and the at least one volatile silicone.

The present invention additionally provides a 1 lotion as defined above which comprises a pharmacologically active agent for use in a method of treatment of the human or animal body by therapy.

The present invention further provides use of a lotion as defined above which does not comprise a pharmacologically active agent, as a cosmetic product to be applied to the skin or hair.

It should be understood in the context of present description that the expression "oily phase" excludes silicone oils.

The lotion can be used for cosmetic or pharmaceutical bodily use.

Viscosities when mentioned in this specification are measured at 250C.

is Since the lotion of the invention need not contain a surface-active agent, it has an additional advantage, as this ingredient, often present in cosmetic compositions, is capable of irritating the skin.

The absence of this ingredient also makes it possible to achieve economies in the final cost of the lotion of the invention. The volatile silicone is soluble in both the oily phase and the silicone phase and is thus partitioned in these two phases. 25 It is, for example, possible to use, as a volatile silicone, a cyclomethicone of formula:

i cl ir CH 3 Si-0 CH 3 wherein n is from 3 to 8.

Preferred cyclomethicones are cyclopentadimethylsiloxane (n = 5) and cyclotetradimethylsiloxane (n = 4).

It is particularly possible to use the products sold by Dow Corning under the names IlDC Fluid 24411, IlDC Fluid 24511, IIDC Fluid 34411 and IlDC Fluid 34511 (Trade Marks).

other cyclomethicones which can for example, be used are those sold by Goldschmidt under the name 11Abil K411; by Rh6ne Poulenc under the names 11Silbione 70045 V211 and 11Silbione Huile 70045 VS"; and by Union Carbide under the names "Volatil Silicone 715811 and "Volatil Silicone 720711 (Trade Marks).

There may also, for example, be mentioned, as another type of volatile silicone, the PDMSs of formula:

CH 3 CH 3 CH 3 1 1 1 S '- 0 ')-L-u -S'-CH3 1 1 3 (.ill 3 n k-n 3 wherein n is less than or equal to 13, preferably less than or equal to 3.

For preciseness it is suitable to express the proportions of the oily and silicone phases as well as of the volatile silicone in relation to the total weight of these three constituents (hereinafter called the nonaqueous constituents), because the proportion of aqueous phase can vary widely (for example from 5 to 90 preferably from 40 to 80 %, by weight with respect to the total weight of the lotion) according to the desired use.

The lotion of the invention generally comprises, with respect to the total weight of the nonaqueous constituents: from 1 to 70 of the at least one volatile silicone; from 10 to 60 of the oily phase; and from 10 to 55 of the silicone phase.

According to a preferred embodiment, the lotion of the invention comprises from 25 to 60 % of the volatile silicone by weight with respect to the total weight of the 15 nonaqueous constituents.

According to a particularly preferred embodiment, the lotion of the invention comprises: from 25 to 60 % of the volatile silicone; from 15 to 45 % of the oily phase; and from 15 to 45 % of the silicone phase, by weight in relation to the total weight of the nonaqueous constituents.

In order to ensure a better separation of the phases, it is preferable that the viscosities of the 25 different phases are within certain limits.

Thus, the silicone phase generally has a viscosity of from 15 to 800 n&ls, preferably from 30 to - - n h - 7 400 mm/s.

This, however, does not mean that certain constituents of the mixture of the silicone phase may not individually have a viscosity beyond these limits.

The oily phase generally has a viscosity of from 3 to 400 m&/s, preferably from 10 to 200 mm?/s.

So as to ensure the formation of a three-phase lotion (and not of a twophase lotion), it is suitable to formulate the oily phase so that it is less dense than the silicone phase. Whatever the circumstances, the oily and silicone phases are less dense than water and thus form the upper and intermediate layers of the lotion of the invention. 1 However, it is preferable in order to ensure a good visual effect that the density of the three phases is within precise limits.

The density of the silicone phase can thus be, for example, from 0.92 to 0.99 g/cm 3. preferably from 0.93 to 0. 97 g/cm3, and the density of the oily phase can be, for example, from 0.80 to 0.96, preferably from 0.88 to 0. 91 g/CM3.

Although the density and the viscosity of the oily phase are specified above, this does not mean that certain constituents of any mixture of oils may not individually have values outside the given limits.

For the lower aqueous phase of the lotion of invention, water is principally used and optionally contains water-soluble active principles in a proportion of 1 to 50 %, preferably from 3 to 30 %, by weight in relation to the total weight of the aqueous phase.

According to a preferred embodiment of the invention, it is possible to add to the aqueous phase an alcohol, preferably at a concentration of from 0.0001 to 1 % by weight with respect to the total weight of the lotion.

According to another preferred embodiment of the 10. invention, it is possible to add to the aqueous phase at least one gelling agent which has the effect of improving the formation of an emulsion during the agitation of the three-phase lotion. t It is possible to use as gelling agent, for example, those which have a low flow threshold (that is to say, gels which are able to flow under their own weight) and a low gelling ability.

The gelling agents can be of the natural type, such as the galactomannans, for example guar gum and locust bean gum, the carrageenans such as D-galactopyrannose, the alginates such as the sodium alginates (polymannuronate and guluronate), the celluloses and derivatives such as methyl cellulose, ethyl cellulose, propyl cellulose or hydroxypropyl methyl cellulose, the xanthan gums such as those consisting of the following monomers: D-glucose, D-mannose and D- glucuronic acid, or else they can be synthetic gelling agents such as those of the carboxyvinyl t, 9 - polymer type such as those sold under the name 11Carbopoll' (Trade Mark) by Goodrich or glyceryl polymethacrylates such as those sold under the name "Lubrajel" (Trade Mark) by Guardian or a synthetic gelling agent of the polyether silicone wax type sold by Wacker under the name 'ISLM 2300811 (Trade Mark).

The gelling agent can be present in, for example, a proportion of from 0. 01 to 10 % by.weight with respect to the total weight of the aqueous phase.

When using such a gelling agent, it is preferable to employ a sufficient quantity of it to give a viscosity of the aqueous phase which is generally from 0.01 to 20 poises (1 to 200 mm2/-s), preferably from 0.01 to 2 poises (1 to 20 m&/s).

Thus, representative proportions for each category of gelling agent are: for the galactomannans, carrageenans and alginates, from 0.01 to 2 % and preferably from 0.05 to 0.5 % by weight with respect to the aqueous phase; for the celluloses and derivatives, from 0.01 to 10 and preferably from 0.3 to 7 %; for the xanthan gums, from 0.01 to 0.3 % and preferably from 0.01 to 0.1 %; and for the synthetic gelling agents, from 0.01 to 2 % and preferably from 0.05 to 0. 5 %.

When a gelling agent is used, the quantity of this agent is such that the aqueous phase exhibits a - 10 density of, for example, from 0.98 to 1.5 g/cm3, preferably from 0. 99 to 1.3 g/c&.

The silicone phase of the lotion of the invention can comprise any pharmaceutically and/or cosmetically acceptable, nonvolatile, fluid, silicone productwhose viscosity at 250C is greater than approximately 15 m&ls, such as the silicone oils, especially the polydimethylsiloxanes (PDMSs), the trimethylsiloxysilicates (name given by the Cosmetic, Toiletry and Fragrance Association of Washington) in combination with the PDMSs, the polydimethylsiloxaneols, the polyphenylmethylsiloxanes and trimethylsilylmonopentaerythritol.

The'PDMSs which can be used have the following formula:

CH 3 1 CH:F-bi-0- & 3 CH 3 1 bl.-U 1 Ln3 _1 CH 3 1 -Si-CH 1 n W1 3 wherein n is from 14 to 2000. the PDMSs having a viscosity of from 10 inm/s to 2.5 x 106 m&ls.

There may be mentioned, among the PDMS which are commercially available and which are suitable for the present invention:

- IlDC Fluid 20011 (Trade Mark) (viscosity of between 10 m&ls and 2500 mm/s) sold by Dow Corning; IlViscasil 60M11 (Trade Mark) (60, 000 mie/s), "SF-121411 and "SF-123611 (Trade Marks) sold by General Electric; 11Abil 1011 and 11Abil K311 (Trade Marks) sold by - Goldschmidt; t'Rhodorsil 47 V lot?. "Silbione 70047 V 1011, 11Silbione 70047 V 1001t and ttSilbione 70047 V 30011 (Trade Marks) sold by Rh6ne Poulenc; and Itsilicone Oil L 4511 (Trade Mark) (10 to 100 mie/s) sold by Union Carbide.

There may be mentioned, among the trimethyl- siloxysilicates which can be used according to the invention, the following commercial products:

t'DC Fluid 59311 (Trade Mark) sold by Dow tISilicone 1 SS 4267tt (Trade Marks) sold by General Electric.

The,polydimethylsiloxanols which can be used hav the following formula:

SSX 4267" "SiliconeSS 423011 OH 1 HO- Si- 0 CH 1 3 si-o 1 - CH 3 Corning; and and "Silicone OH 1 - si- 011 1 n OH 15wherein n is from 3 to 2000.

Among the latter, there may be mentioned the commercial products IlDC Q2-140311 (100 mm/s) and IlDC Q2-140111 (Trade Marks) sold by Dow Corning.

The polyphenylmethylsiloxanes which can be used 20 have the following formulae:

(a) ell 3 1 ell - si - 0 1 P.11 3 1- 1 CH si J-1 CH si 0 - 1 i 1 0 -, n k'113 H 3 - c 3 ell 1 3 si - 0 - ell 1 3 S i - ell 1 3 Uki 3 AM wherein n is from 1 to 400 and m is from 0 to 100 (b) CH 1 3 CH - si- 03 1 CH wherein n is from 0 to 400.

11Abil AV2001101 -si 0-si - CH 1 1 3 CH3 _n CII 3 Among the latter, there may be mentioned the following commercial products:

IlDC Fluid 55611 (Trade Mark) sold by Dow Corning; 11Abil AV35011 and 11Abil AV100011 (Trade Marks) sold by Goldschmidt; and - "Silicone VP 112011 (Trade Mark) sold by Wacker.

Trimethylsilylmonopentaerythritol, which can be used in accordance with the invention, has the formula:

c t CH2- 0- S i (CH3) 3 When trimethylsiloxysilicates are employed, they are present in a ratio by weight with respect to the PDMS 15 of from 10 to 35.

The oily phase of the lotion of the invention can consist of any f luid oil (or mixture of oils) which is stable at the usual temperature of use of cosmetic products and which is pharmaceutically or cosmetically acceptable, such as the vegetable or animal oils, the mineral or synthetic oils and the triglycerides of fatty acids.

There may be mentioned, among the modified or unmodified vegetable or animal oils, for example sweet almond oil, avocado oil, castor oil, olive oil, jojoba oil, sunflower oil, wheat germ oil, sesame oil, groundnut oil, grape seed oil, soya oil, rapeseed oil, safflower oil, copra oil, maize oil, hazelnut oil, karite butter, palm oil, apricot kernel oil,or calophyllum oil.

There may be mentioned among the inorganic oils, for example, paraffin oil.

There may be mentioned, among the triglycerides of fatty acids, the caprylic/capric triglycerides, the CIO to C18 triglycerides and the C12 to C18 triglycerides.

The lotion of the invention can be applied as it is to the skin or to the hair to impart thereto the inherent properties of its constituent ingredients.

However, it is preferable to incorporate therein at least one active principle in order to provide, for example, a slimming, moisturising, sunscreening, antiaging or softening activity.

There is no limitation as to the choice of the active principles which may be incorporated, because the - 14 liposoluble principles can be dissolved in the oily phase and the water-soluble principles can be dissolved in the aqueous phase.

There may be mentioned, among the liposoluble active principles, retinol as antiaging agent, and, as slimming and softening agents, the nicotinate of DL alphatocopherol, the oily extract of ginseng (Panax ginseng) root, the oily extract of English ivy (Hedera helix), the oily extract of dry flowers of arnica (Arnica montana L), the oily extract of rosemary (Rosmarinus officinalis N), the oily extract of marigold (Calendula officinalis), the oily extract of sage (Salvia officinalis L), the oily extract of St:Johnts-wort (Hypericum perforatum), the oily extract of meadowsweet (Filpendula ulmaria L), the oily extract of bigflowered Jarva tea (Orthosiphon stamineus Benth), and the oily extract of bladder wrack (Fucus vesiculosus).

It is possible to add essential oils as perfuming and slimming agents, such as Ceylon cinnamon essence, Siberian stone pine essence, Ceylon nutmeg essence, Virginia wood essence, fragrances, preserving agents, antioxidants, pigments or UV screening agents.

There may be mentioned, among the liposoluble UV screening agents, 2ethylhexyl 4-(paramethoxy)cinnamate, sold under the name 11Parsol MCX" (Trade Mark) by Givaudan, and 2-hydroxy- 4methoxybenzophenone sold under the name "Uvinul M4011 (Trade Mark) by BASF. There may be mentioned, - is - among the water-soluble UV screening agents, 2-hydroxy4-methoxybenzophenone-5-sulphonic acid, sold under the name "Uvinul MS4011 (Trade Mark) by BASF.

There may be mentioned, among the water-soluble active principles, slimming agents such as the xanthine derivatives, such as caffeine, theobromine, theophylline, L-parnitine or dimethylaninoethyltheophylline hydrochloride, the silicon derivatives of the methylsilanol theophyllineacetate alginate type, the vegetable derivatives of the free escin acid type, the total saponins of English ivy, the aqueous glycolic extracts of English ivy, the aqueous glycolic extracts of brown algae, the aqueous glycolic extract of birch bark, the aqueous glycolic extract of fresh wild pansy and the dry aqueous extract of fresh sage leaf, moisturising agents such as glycerol, propylene glycol, sorbitol, proline, pyrrolidonecarboxylic acid and its sodium derivative, urea, collagen, Aloe Vera gel, hyaluronic acid and its sodium derivative, dimethylsilanol hyaluronate and allantoin, softening agents such as the polyethylene glycols having an MW of 400 (PEG 400) or of 600 (PEG 600), preserving agents, colorants and UV screening agents.

It is also possible to use active principles which partially dissolve in at least two of the constituent phases of the lotion of the invention.

There may be mentioned, among the principles which are water-soluble but also partially liposoluble, the - 16 xanthine bases such as caffeine.

In contrast, the nicotinate of alphatocopherol is very soluble in the oils but partially soluble in water.

As mentioned above, it is possible to include lipophilic active principles in the oily phase and, at the same time, to include hydrophilic active principles in the aqueous phase, even though the active principles may be incompatible with each other.

There may be mentioned, as an illustration:

1. Sodium stearate, which is soluble in the oily phase, and hexamidine diisethionate, which is soluble in the aqueous phase at an acidic pH (less than 6).

2. Calcium stearate, which is soluble in the oily phase, and potassium sulphate, which is soluble in the aqueous phase. The intermediate silicone phase slows down the formation of the calcium sulphate precipitate, which is insoluble in water.

Furthermore, certain active principles which are unstable in the presence of water, such as retinol, can be nevertheless formulated according to-the invention insofar as the intermediate phase prevents contact between the upper phase and the lower aqueous phase.

It is also possible to incorporate into the lotion according to the invention other substances which are normal in cosmetics and pharmacology, such as preserving agents, colorants and perfumes.

The lotion of the invention may, for example, be - 17 prepared by simple mixing of the ingredients in any order. It is, however, preferable to add the volatile silicone to the nonvolatile silicone constituents before adding them to the oily constituent (s). A quantity of water is then added which is sufficient for the use anticipated for the lotion.

The three-phase lotion of the invention is suitable for all cosmetic and/or dermatological applications, depending, where relevant, on the type of active principle(s) incorporated.

It is especially suited, for example, to the cas of a slimming lotion, for rubdown massages.

The lotion can additionally be a body tonic lotion for sunscreeningp removing make-up, or treating the hair after shampooing, and similar purposes.

The invention is now further illustrated in the following Examples in which A represents the oily phase, B represents the silicone phase and C represents the aqueous phase.

EXAMPLES OF COMPOSITIONS EXAMPLE 1: Sunscreen lotion (A) Soya oil 18 2-Hydroxy-4-methoxybenzophenone, sold under the name "Uvinol M4011 by BASF..............

2 % Perfume qs Preserving agents, antioxidising agent qs (B) Polydimethylsiloxane sold under the name ITC Fluid 200" (350 mmls) by Dow Corning......

I'Volatil Silicone 715811....................

33 % % (C) Methylsilanol mannuronate, sold under the name 11Algisium11 by Exsymol 0.1 % AS Preserving agents, colorant qs Water qs 100 -% After mixing, the lotion separates into three phases over hour and the volatile silicone is partitioned between the 10 oily phase and the silicone phase.

EXAMPLE 2: Moisturising body lotion (A) Apricot oil.................

Acetate of D,L-alpha-tocopherol..

(B) 'TC Fluid 2001' (10 mm/S) is I'Volatil Silicone 715811.....

(C) Methylsilanol theophyllineacetate alginatd, sold under the name 11Theophyllisilanell by Exsymol 0.1 % AM Galactopyrannose sulphate, sold under the name 11Auby Gum x211 by Sanofi Water %_ 1 0-11 % 22 % 0. 07 -% qs 100 % - 19 After mixing, the emulsified lotion separates into three phases over 1/2 hour and the volatile silicone is partitioned between the oily phase and the silicone phase.

EXAMPLE 3: Slimming lotion (A) Rapeseed oil.......................

Inorganic oil, apricot kernel oil and ivy extract, sold under the name I'Vegetol Huileux De Lierre 414911 by Gattefosse......

Colourant, perfume Preserving agents, antioxidant (B) ITC Fluid 20011 (350 mm/S) ITC Fluid 20011 (10 M&/S) I'Volatil Silicone 715811 (C) Caffeine 11Auby Gum x211 Preserving agents Colourants..........

Water...........

...... 13 5.k ........................... 2 % qs qs ................. 3 7 25 .............. 0.5 % 0.1 % qs ..................... qs ...................... qs 100 % After mixing, the emulsified lotion separates into three phases over 1 hour and the volatile silicone is partitioned between the oily phase and the silicone phase.

EXAMPLE 4: Bodily scenting lotion (A) Wheat germ oil........

1188-138311 concentrate sold by Cr6ations aromatiques......

...............

(B) IlDC Fluid 20011 (350 mm/S) IlDC Fluid 20011 (10 lum/s) I'Volatil Silicone 715811 (C) Glycerol 11Auby Gum x211 Preserving agents Colourants...... Distilled water.

16 % 1 1-1.

2 % 8 % 22 % 2 % 0.1 % qs qs qs 100 % After mixing, the emulsified lotion separates into three phases over 1 hour and the volatile silicone is partitioned between the oily phase and the silicone phase.

EXAMPLE 5: Slimming lotion (A) Rapeseed oil Perfume Preserving agents, antioxidants Colorants ...............

qs ....... 0.0004 % (B) Polydimethylsiloxanol sold under the name ITC Q2-140311 by Dow Corning.........

j 7 % 21 - I'Volatil Silicone 715811 ................... 26 % (C) Caffeine................................

Preserving agents.........................

Distilled water........................

0.5 % qs qs 100 % After mixing, the lotion separates totally into three phases over 12 hours and the volatile silicone is partitioned between the oily phase and the silicone phase.

EXAMPLE 6: Slimming lotion (A) Rapeseed oil..........................

Mineral oil,-apricot kernel oil and ivy extract, sold under the name I'Vegetol Huileux de Lierre 414911 by Gattefosse..... Colourant, perfume.. ...................... Preserving agents, antioxidant...........

... 13 % 2 % qs qs (B) ITC Fluid 20011 (350 mm'/s) 3 % ltDC Fluid 20010 (10 M&Is) 7 % 1Tolatil Silicone 715811 25 % (C) Caffeine Methylsilanol theophyllineacetate alginate PEG 400 Preserving agents Water .. 0.5 0.1 3 0.4 qs 100 22 EXAMPLE 7: Slimming lotion (A) Rapeseed oil 13 -0o Mineral oil, apricot kernel oil and ivy extract, sold under the name I'Vegetol Huileux de Lierre 414911 by Gattefosse Colourant, perfume Preserving agents, antioxidant (B) IlDC Fluid 20011 (350 inm/S) ITC Fluid 20011 (10 mm 2/S).......

IlVolatilSilicone 715811............

2 % qs qs ............. 3 ........... 7 ...... 25 (C) Caffeine; 0.5 % Methylsilanol theophyllineacetate alginate 0.1 % Polyether silicone wax 'ISLM 2300811 from Wacker....

is Preserving agents Water...........

1.5 % 0.4 % qs 100 % After mixing, the lotions of Examples 6 and 7 separate in approximately 1 hour and the volatile silicone is partitioned between theoily phase and the silicone phase.

t

Claims (26)

1. A three-phase lotion suitable for application to the body, which comprises an upper oily phase, an intermediate silicone phase and a lower aqueous phase, the lotion also comprising at least one volatile silicone.

2. A lotion according to claim 1 wherein the proportion of the aqueous phase is-from 5 to 90 % by weight with respect to t he total weight of the lotion.

3. A lotion according to claim 2 wherein the proportion of the aqueous phase is from 40 to 80 % by weight with respect to the total weight of the lotion.

4. A lotion according to any one of the preceding claims which comprises, by weight with respect to the total weight of the volatile silicone and the oily and silicone phases:

from 1 to 70 of the at least one volatile silicone, from 10 to 60 of the oily phase, and from 10 to 55 of the silicone phase.

5. A lotion according to any one of the preceding claims wherein the volatile silicone is of formula:

CH 1 3 -si-. 0 1 CH 3 wherein n is from 3 to 8.

6. A lotion according to claim 5 wherein the volatile silicone is cyclopentadimethylsiloxane or cyclotetradimethylsiloxane.

7. A lotion according to any one of the preceding claims, wherein the silicone phase consists of at least one of a polydimethylsiloxane, optionally in combination with a trimethyl siloxysilicate, a polydimethylsiloxanol, a polyphenylmethylsiloxane or a trimethylsilylmonopentaerythritol.

8. A lotion according to any one of the preceding claims which comprises from 25 to 60 % of the volatile silicone by weight with respect to the total weight of the volatile silicone and the oily and silicone phases.

9. A lotion according to claim 8 which comprises by weight with respect to the total weight of the volatile silicone and the oily and silicone phases: from 25 to 60 % of the volatile silicone; from 15 to 45 % of the oily-phase; and from 15 to 45 % of the silicone phase. 20

10. A lotion according to any one of the preceding claims wherein the aqueous phase includes a gelling agent.

11. A lotion according to Claim 10 wherein the gelling agent is of the natural type chosen from the galactomannans, the carrageenans, the alginates, the celluloses or cellulose derivatives or the xanthan gums or of the synthetic type chosen from the carboxyvinyl polymers, the glyceryl polymethacrylates or the polyether silicone waxes.

12. A lotion according to claim 11 wherein the gelling agent is a carrageenan.

13. A lotion according to any one of the preceding claims wherein the phases have the following viscosities: the oily phase: from 3 to 400 ram2/s at 2SOC; the silicone phase: from 15 to 800 mm/s at 25OC; and the aqueous phase: from 1 to 200 m&ls at 250C.

14. A lotion according to claim 13 wherein the phases have.the following viscosities: the oily phase: from 10 to 200 mm2/s at 25OC; the silicone phase: from 30 to 400 m&Js at 25OC; and the aquk-:,ous phase7: from 1 to 20 m&/s at 250C.

15. A lotion according to any one of the preceding wherein the phases have the following densities: the oily phase: from 0.80 to 0.96 g/cm3; the silicone phase: from 0.92 to 0.99 g/cm3; and the aqueous phase: from 0.98 to 1.5 g/cm3.

16. A lotion according to claim 15 wherein the phases have the following densities: the oily phase: from 0.88 to 0.91 g/cm3; the silicone phase: from 0.93 to 0.97 g/cm3; and the aqueous phase: from 0.99 to 1.3 g/c&.

17. A lotion according to any one of the preceding claims wherein the oily phase comprises at least one vegetable oil, animal oil, mineral or synthetic oil or triglyceride of fatty acids.

claims

18. A lotion according to any one of the preceding claims which additionally comprises a liposoluble and/or hydrosoluble cosmetic and/or dermatological active principle, colorant, perfume or preserving agent.

19. A lotion according to claim 18 wherein the active principle is a slimming agent, moisturising agent, antiaging agent, softening agent or UV screening agent.

20. A lotion according to any one of the preceding claims-which comprises an alcohol in an amount of from 0.0001 to 1 % by weight with respect to the total weight of the lotion.

21. A lotion according to any one of the preceding claims which is free of,surface-active agent.

22. A lotion substantially as described in any one of the Examples of Compositions.

23. A process for the preparation of a lotion as defined in any one of the preceding claims which comprises mixing together the components making up the oily phase, the silicone phase and the aqueous phase and the at least one volatile silicone.

24. A process according to claim 23 wherein the at least one volatile silicone is added to the components making up the silicone phase, which is then added to the components making up the oily phase, and the components making up the aqueous phase and then added thereto.

25. A lotion as defined in any one of claims 1 to 21 which comprises a pharmacologically active agent for use - 27 in a method of treatment of the human or animal body by therapy.

26. Use of a lotion as defined in any of claims 1 to 21, which does not comprise a pharmacologically active agent, as a cosmetic product to be applied to the skin or hair.

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