GB2090526A

GB2090526A - Cosmetic oil based on a mixture of vegetable oils

Info

Publication number: GB2090526A
Application number: GB8136440A
Authority: GB
Original assignee: LOreal SA
Current assignee: LOreal SA
Priority date: 1980-12-04
Filing date: 1981-12-03
Publication date: 1982-07-14
Also published as: GB2090526B; FR2495468A1; DE3147958A1; FR2495468B1

Abstract

Cosmetic compositions contain, in the form of a binary mixture, hazelnut oil and another vegetable oil taken from the group comprising parasol pine oil and groundnut oil.

Description

SPECIFICATION Cosmetic oil based on a mixture of vegetable oils The present invention relates to a cosmetic composition based on a binary mixture of vegetable oils.

The oils generally used in cosmetics, or "cosmetic oils", are grease products which are liquid at ambient temperature and have a low volatility.

These oils can be of very diverse origin and, in particular, can be vegetable or animal oils, mineral oils or, also, synthetic oils.

Depending on their origin, these oils are capable of leaving a more or iess greasy film on the skin. It is-generally considered that if the film is particularly greasy, the oil is non-penetrating and prevents the skin from drying out by virtue of its occlusive properties.

Thus, vaseline oil (liquid petrolatum) leaves a very greasy film on the skin, which has the disadvantage both of drawing excess moisture from the skin and of giving it a tacky or sticky feel and a shiny appearance considered to be particularly unattractive.

Other oils, referred to as penetrating oils, do not have this particularly greasy character of vaseline oil and leave a non-greasy film on the- skin, but nevertheless have the disadvantage of not satisfactorily preventing the skin from drying out.

The mixture of vegetable oils according to the invention makes it possible to overcome the disadvantages referred to above, insofar as it does not leave a film of excessively shiny appearance, which can be unattractive, on the skin.

Furthermore, the film left on the skin has a protective effect against external factors such as the sun, the wind, and the cold, and, whilst preventing the skin from drying out, is not sufficiently occlusive to draw excess moisture from the skin.

By virtue of its properties, namely the formation of a relatively non-greasy and relatively nonoccusive film, the mixture according to the invention has a particular application in certain cosmetic compositions containing a high proportion of oils, such as sun products and, in particular, sun oils.

The present invention provides a cosmetic composition based on vegetable oils, the said oils being present in the form of a binary mixture of hazelnut oil and another vegetable oil taken from the group comprising parasol pine oil (pin us pines) and groundnut oil.

These oils have already been proposed in cosmetics, but specified mixtures have never been recommended.

It has been found through numerous experiments that only mixtures containing a proportion of hazelnut oil are capable of lending to the desired cosmetic properties. In fact, mixtures of groundnut oil and pine oil, used in different proportions, have proved to be rather unsatisfactory from the cosmetic point of view.

Furthermore, these experiments have also made it possible to establish that it is desirable to use these mixtures of oils in relatively well-defined proportions.

Thus, whether the mixture is a mixture of hazelnut oil and parasol pine oil or a mixture of hazelnut oil and groundnut oil, it is preferable to use these mixtures in a weight ratio of 20:80 to 80:20.

According to the invention, the hazelnut oil, the parasol pine oil and the groundnut oil should preferably have the following characteristics: Hazelnut Oil: specific gravity: 0.911-0.917 refractive index at 20"C: 1.469-1.472 saponification number: 187-197 iodine number: 83-103 unsaponifiable: 0.3-0.7% Parasol Pine Oil: specific gravity: 0.920-0.932 refractive index at 40"C: 1.467-1.469 saponification number: 192-198 iodine number: 118-125 unsaponifiable fraction: 0.5-2% Groundnut Oil: specific gravity: 0.914-0.920 refractive index at 20"C: 1.470-1.474 saponification number: 188-196 iodine number 85-108 unsaponifiable fraction: 0.6- 1 % The cosmetic compositions in which the binary mixture of vegetable oils can be used may, in general, be any cosmetic composition containing oil.

Preferably, these compositions contain at least 1 0% of the binary mixture such as defined above.

Amongst these compositions, there may be mentioned those which are presented in the form of fluid emulsions (milks), in the form of lotions or in the form of thicker emulsions, such as creams.

These compositions include milks or emollient creams, milks or creams for the care of the hands, the body or the face, make-up removal creams or milks, make-up foundation bases, anti sunburn milks or creams, artificial tanning milks or creams, antiperspirant milks or creams, shaving creams or foams, pre-shave lotions or also milks or creams for the care of babies' skin.

These compositions can be make-up products such as lip products in stick form, intended either for colouring the lips (lipsticks) or for preventing chapped lips, eye make-up compositions and rouges.

The cosmetic compositions in the form of solutions, according to the prevent invention, are in particular anti-sunburn oils, that is to say oils containing, in addition to the cosmetic oil, a sun filter which absorbs ultraviolet radiation, hand oils, pre-shave or after-shave oils and bath oils.

In general, in such compositions in the form of solutions, the proportion of the binary mixture of vegetable oils is from 10 to 99.9% of the total weight of the composition.

In the cosmetic compositions in the form of emulsions or lotions, according to the invention, the binary mixture of vegetable oils is generally present in an amount of 10 to 60% by weight, relative to the total weight of the composition.

In the make-up compositions, the amount of the binary mixture of vegetable oils is generally 10 to 80% of the total weight of the composition.

The compositions according to the invention generally contain other ingredients such as preservatives, antioxidants, perfumes, colouring agents and the like as well as mineral, animal or synthetic oils but not vegetable oils other than those specified.

In order to demonstrate the good properties of the cosmetic oil according to the invention, the following experiments were carried out: The same amount of one of the following oils or of one of the following binary mixtures of oils was applied to the skin on the back of the hands of volunteers: 1) hazelnut oil 2) parasol pine oil 3) groundnut oil 4) 20% of hazelnut oil/80% of parasol pine oil 5) 40% of hazelnut oil/60% of parasol pine oil 6) 50% of hazelnut oil/50% of parasol pine oil 7) 60% of hazelnut oil/40% of parasol pine oil 8) 80% of hazelnut oil/20% of parasol pine oil 9) 20% of hazelnut oil/80% of groundnut oil 10) 40% of hazelnut oil/60% of groundnut oil 11) 50% of hazelnut oil/50% of groundnut oil 12) 60% of hazelnut oil/40% of groundnut oil 13) 80% of hazlenut oil/20% of groundnut oil After application, these volunteers, without knowing the origin of the various oils applied, assigned a grade from 0 to 10 thereto, as a function of certain criteria, a high grade corresponding to rapid penetration, to a relatively non-shiny appearance and toXa relatively non greasy feel.

These criteria were as follows: 1) Rate of penetration: rapid (10 to 6.5), low (6.5 to 4.5), very low (4.5 to 1), 2) Appearance of the skin after application: very shiny (4.5 to 1), shiny (6.5 to 4.5), relatively non-shiny (slightly shiny) (10 to 6.5), 3) Feel after application: very greasy (4.5 to 1), greasy (6.5 to 4.5), relatively non-greasy (slightly greasy) (10 to 6.5).

The average grade obtained is shown in the following Table: Oil or mixture 1 2 3 4 5 6 7 8 9 10 11 12 13 Average grade 6.64 6.61 6.94 3.94 4.50 4.33 3.89 4.44 4.11 4 5.11 4.39 4.56 ,Variance analysis and the Student's test applied to this experiment show that the difference in grading between the oils 1, 2 and 3 and the mixtures of oils 4 to 13, according to the invention, is significant.

The following Examples further illustrate the present invention.

EXAMPLE 1: Body oil hazelnut oil 40 g parasol pine oil 59.8 g butylhydroxyanisole 0.1 g butylhydroxytoluene 0.1 g EXAMPLE 2: Sun oil hazelnut oil 47.4 g groundnut oil 47.4 g "parsol ultra" sun filter sold by GIVAUDAN 5 9 butylhydroxyanisole 0.1 g butylhydroxytoluene 0. lug EXAMPLE 3: Face-care cream hazelnut oil 10 g parasol pine oil 1 2 g self-emuslifiable glycerol monostearate 5g perhydrosqualene 4 9 carboxyvinylic polymer (Carbopol 940) 0.4 g triethanolamine 0.4 g butylhydroxyanisole 0.1 g butylhydroxytoluene 0.1 9 perfume q.s.p.

water + preservative q.s.p. 100 g EXAMPLE 4: Body milk hazelnut oil 10 g groundnut oil 5 g mixture of lanoline alcohols and lanoline sterols, sold by American Cholesterol Products under the name "Amerchol L101" 0.3g stearic acid 1.4 g self-emulsifiable glycerol monostearate 2 9 cetyl alcohol 0.2 g triethanolamine 0.95 g carboxyvinylic polymer (Carbopol 941) 0.25 g propylene glycol 2 g butylhydroxyanisole 0.1 g butylhydroxytoluene 0.1 g perfume q.s.

water + preservative q.s.p. 100 g EXAMPLE 5: Sun cream hazelnut oil 20 g groundnut oil 28.3 g magnesium lanolate '2.85 g lanoline alcohol 6.65 g ozokerite 2 9 butylhydroxyanisole 0.1 g butylhydroxytoluene 0.1 g sun filter sold under the name "parsol ultra" by GIVAUDAN 5 9 water + preservative 100 g EXAMPLE 6: Make-up foundation hazelnut oil 1 5 g parasol pine oil 5 9 isopropyl lanolate 4g stearic acid 2.6 9 self-emulsifiable glycerol stearate 5 9 triethanolamine 1.2 9 sodium lauryl-sulphate 1.1 9 bentonite 2.5 9 butylhydroxyanisole 0.1 9 butylhydroxytoluene 0.1 g perfume q.s.

titanium oxide I q.s. according to the iron oxide F desired tint and the talc J desired covering power water + preservative q.s.p. 100 9

Claims

1. A composition suitable for cosmetic use which comprises a binary mixture of hazelnut oil and another vegetable oil which is parasol pine oil or groundnut oil.

2. A composition according to claim 1 in which the weight ratio of hazelnut oil to parasol pine oil in the binary mixture is from 20:80 to 80:20.

3. A composition according to claim 1 in which the weight ratio of hazelnut oil to groundnut oil in the binary mixture is from 20:80 to 80:20.

4. A composition according to any one of the preceding claims in which the said binary mixture represents at least 10% by weight of the total weight of the composition.

5. A composition according to any one of the preceding claims in which the said binary mixture represents 10 to 99.9% by weight of the total weight of the composition, the said composition being in the form of a solution.

6. A composition according to any one of claims 1 to 4 in which the said binary mixture represents 10 to 60% by weight of the total weight of the composition, the said composition being in the form of an emulsion of the water-in-oil or oil-in-water type or in the form of a lotion.

7. A composition according to any one of claims 1 to 4 in which the said binary mixture represents 10 to 80% by weight of the total weight of the composition, the said composition being in the form of a make-up product.

8. A composition according to any one of the preceding claims which also contains one or more preservatives, sun filters, anti-oxidants, perfumes or colouring agents.

9. A composition according to any one of the preceding claims in which the oils have the characteristics of specific gravity, refractive index, saponification number, iodine number and unsaponifiable fraction hereinbefore specified.

10. A composition according to claim 1 substantially as described in any one of the Examples.