Cosmetic or dermatological composition and uses thereof

Abstract

The present invention relates to a cosmetic or dermatological composition and to the use thereof, in particular for enhancing and firming the skin, and combating a dull complexion. The cosmetic or dermatological composition comprises, in % by weight relative to the total weight of the composition, from 3 to 4% by weight of at least one vegetable oil rich in essential polyunsaturated fatty acids; a combination of 0.002 to 0.02% of a copper salt, 0.02 to 0.2% of a zinc salt, and 0.02 to 0.2% of a magnesium salt; a myrtle essential oil; and vitamin C and / or a derivative thereof. The present invention also relates to a cosmetic treatment method comprising a step of applying an effective quantity of the composition to a person's skin.

Description

[0001] COSMETIC OR DERMATOLOGICAL COMPOSITION

[0002] AND ITS USES

[0003] technical field

[0004] The present invention relates to a cosmetic or dermatological composition and its use, in particular, to strengthen and firm the skin, and to combat dull complexion.

[0005] The present invention also relates to a non-therapeutic cosmetic treatment method comprising a step of applying an effective amount of the composition to a person's skin.

[0006] State of the art

[0007] Aging is a multifactorial process, marked by the appearance of numerous outward signs, which vary from individual to individual depending on their unique genetic makeup. This is referred to as intrinsic biological aging, also known as natural chronobiological aging.

[0008] For example, with age, hormonal variations lead to a decrease in the secretory activity of the sebaceous glands. The skin becomes drier.

[0009] Also, as we know today, aging is accelerated by the influence of potential environmental aggressors such as the sun, pollution, stress, etc. This is referred to as photo-induced aging or actinic aging.

[0010] With age, the skin becomes thin and dull, and a wrinkled appearance develops, linked to damage to the mechanical support structures. This damage occurs due to a decrease in supporting fibers, their stiffening, and the weakening of the dermo-epidermal junction. As a result, the skin has less resistance to gravity.

[0011] Numerous scientific studies focus on the study of aging and the search for cosmetic compositions with a more effective, more targeted, and even personalized action.

[0012] One of the plants that has attracted the attention of cosmetic research is myrtle, *Myrtus communis* (common myrtle) and *Myrtus nivellei*, which can live up to 300 years. It is a shrub belonging to the Myrtaceae family, growing to a height of 2 to 3 meters, with fragrant white flowers and evergreen leaves dotted with glands containing essential oil. It flowers between May and July, and its ovoid fruit is not very fleshy, bluish-black when ripe, and has a pleasantly astringent, resinous flavor. The reddish bark of the stems peels off in patches and, like all other parts of the plant, emits an aromatic scent.

[0013] Another plant that has attracted the attention of cosmetic research is immortelle; in particular, the applicant studied Helichrysum italicum, often called curry plant, St. John's flower, or Italian helichrysum. It is a flowering plant species in the Asteraceae family and the Helichrysum genus. It grows as a small shrub, 40 to 60 cm tall, with golden-yellow flowers blooming from May to August. It is renowned for its strong fragrance and its essential oil. In several countries, it is a protected species.

[0014] The use of oils in cosmetics is experiencing growing interest due to their multifunctional properties and compatibility with various formulations. Oils, whether vegetable, mineral, or synthetic, are described as providing benefits such as skin hydration and regeneration. Their rich composition of essential fatty acids, vitamins, and antioxidants makes them particularly suitable for meeting the needs of sensitive, dry, or mature skin. Furthermore, their varied textures and their ability to carry fat-soluble active ingredients make them valuable excipients in creams, serums, and body or hair oils.

[0015] Although various compositions have been developed in the prior art, they leave significant room for improvement on cosmetic targets which include skin strengthening, improving skin radiance, skin hydration, comfort, effective reduction of wrinkles and fine lines, smoothing of skin texture, and combating dull complexion.

[0016] Therefore, there is still today a real need for a composition that provides a comprehensive nourishing, regenerating, brightening action and delays skin sagging by acting more specifically on cell longevity.

[0017] Description of the invention

[0018] The present invention has the specific objectives, in particular, of meeting the aforementioned needs of the prior art, by providing a cosmetic or dermatological composition comprising, as a percentage by weight relative to the total weight of the composition:

[0019] 3 to 4%, preferably 3.2 to 3.8% by weight of at least one vegetable oil rich in essential polyunsaturated fatty acids,

[0020] a combination of copper, zinc and magnesium, with 0.002 to 0.02%, preferably 0.002 to 0.004% by weight of copper gluconate or an equivalent amount of another ingredient providing an equivalent amount of copper,

[0021] o 0.02 to 0.2%, preferably 0.02 to 0.04% by weight of zinc gluconate or an equivalent amount of another ingredient providing an equivalent amount of zinc, and o 0.02 to 0.2%, preferably 0.02 to 0.04% by weight of magnesium aspartate or an equivalent amount of another ingredient providing an equivalent amount of magnesium,

[0022] an essential oil of myrtle; and

[0023] vitamin C and / or a derivative thereof.

[0024] The composition described herein comprises a specific combination of copper, zinc, and magnesium at the aforementioned concentrations. The inventors unexpectedly observed, during a series of tests on various applications, that with this particular combination at the aforementioned concentrations, the effects of the claimed composition were significantly enhanced in all the applications described below. The present invention also proposes a new application for a vegetable oil or blend of oils rich in essential fatty acids, further improving their effectiveness in cosmetics. The experiments presented in the examples below demonstrate the synergistic effect of the ingredients in the composition of the present invention.

[0025] Thus, the present invention also relates to the use of the aforementioned composition for one or more of the following applications: strengthening and firming the skin, boosting skin radiance, moisturizing the skin, improving comfort, making wrinkles and fine lines less visible, smoothing skin texture, making the skin visibly younger, and combating dullness.

[0026] The present invention also relates to a non-therapeutic cosmetic treatment method comprising a step of applying an effective quantity of a composition as defined herein to the skin of a person. This method is intended in particular for the aforementioned applications.

[0027] In this document, unless otherwise stated, the concentration of compounds is expressed as a percentage by weight relative to the total weight of the composition.

[0028] In this product, the essential polyunsaturated fatty acids of at least one vegetable oil are preferably selected from the group comprising linolenic acid, omega-3 linolenic acid, omega-6 linolenic acid, alpha-linolenic acid, gamma-linolenic acid, docosahexaenoic acid, omega-3 and omega-6 fatty acids, or a mixture of two or more of these essential fatty acids. For example, this could be a mixture of omega-3 and omega-6 fatty acids.

[0029] In this document, the vegetable oil rich in essential polyunsaturated fatty acids may be chosen from the group including Echium plantagineum oil, Camelina sativa oil, Oenothera biennis oil, Borago officinalis oil, Linum usitatissimum oil, Salvia hispanica oil, Ribes nigrum seed oil, Brassica napus L. oil, Vitis vinifera seed oil, Juglans regia walnut oil, Triticum vulgaris germ oil or a mixture of two or more of these oils.

[0030] According to the invention, Echium plantagineum oil can be any vegetable variety of Echium plantagineum known to those skilled in the art; for example, it could be organic Echium plantagineum oil. According to the invention, Camelina sativa oil can be any vegetable variety of Camelina sativa known to those skilled in the art; for example, it could be organic Camelina sativa oil.

[0031] According to the invention, Oenothera biennis oil can be any vegetable oil of Oenothera biennis known to a person skilled in the art; it can be, for example, organic oil of Oenothera biennis.

[0032] According to the invention, Borago officinalis oil can be any vegetable of Borago officinalis known to a person skilled in the art; it can be, for example, organic Borago officinalis oil.

[0033] According to the invention, the Linum usitatissimun oil can be any vegetable Linum usitatissimun known to those skilled in the art, it can for example be organic Linum usitatissimun oil.

[0034] According to the invention, Salvia hispanica oil can be any vegetable from Salvia hispanica known to a person skilled in the art; for example, it could be organic Salvia hispanica oil.

[0035] According to the invention, Ribes nigrum seed oil can be any vegetable oil from Ribes nigrum seeds known to a person skilled in the art; for example, it could be organic Ribes nigrum seed oil.

[0036] According to the invention, Brassica napus L. oil can be any vegetable oil from Brassica napus L., known to those skilled in the art; for example, it could be organic Brassica napus L. oil.

[0037] According to the invention, Vitis vinifera seed oil can be any vegetable oil from Vitis vinifera seeds, known to those skilled in the art; for example, it could be organic Vitis vinifera seed oil.

[0038] According to the invention, Juglans regia nut oil can be any vegetable oil made from Juglans regia nuts. Known to those skilled in the art, it could, for example, be organic Juglans regia nut oil.

[0039] According to the invention, Triticum vulgaris germ oil can be any Triticum vulgaris germ vegetable known to a person skilled in the art; for example, it could be organic Triticum vulgaris germ oil.

[0040] Preferably, the total concentration of vegetable oil rich in polyunsaturated fatty acids is 3.09 to 3.61%, preferably 3.45%. Advantageously, at least one vegetable oil rich in essential polyunsaturated fatty acids is a mixture of vegetable oils of Camelina sativa (Camelina oil), Echium plantagineum (Echium oil), Oenothera biennis (Evening Primrose oil), and Borago officinalis (Borage oil). Preferably, the vegetable oil is a mixture of vegetable oils of Camelina sativa, Echium, Oenothera biennis, and Borago officinalis. Preferably, the concentrations of these oils are as follows, expressed in relation to the total weight of the composition: 0.9 to 1.1% Camelina sativa oil, 0.09 to 0.11% Echium plantagineum oil, 1.90 to 2.1% Oenothera biennis oil and 0.20 to 0.30% Borago officinalis oil.Indeed, tests carried out by the inventors show with these oils and concentrations an increased effectiveness of the composition described herein, particularly in the cosmetic applications described herein.

[0041] In the combination of copper, zinc, and magnesium, copper may be incorporated into the composition of the invention in any form and / or ingredient acceptable to the Scientific Committee on Consumer Safety (SCCS). This could be, for example, a copper salt, for instance, selected from the group including copper PCA (INCI: Copper PCA), copper gluconate, and / or copper sulfate. Preferably, it would be copper gluconate.

[0042] Zinc may be incorporated into the composition of the invention in any form and / or ingredient acceptable according to the Scientific Committee on Consumer Safety (SCCS). This may be, for example, a zinc salt, for example, chosen from the group including zinc PCA, or zinc lactate (INCI: Zinc Lactate) and / or zinc gluconate (INCI: Zinc Gluconate). Preferably, it is zinc gluconate.

[0043] Magnesium can be incorporated into the composition of the invention in any form and / or ingredient acceptable according to the Scientific Committee on Consumer Safety (SCCS). This could be, for example, a magnesium salt, such as magnesium aspartate.

[0044] A person skilled in the art, by virtue of this general knowledge, can determine the respective quantities of ingredients to provide copper, zinc and magnesium, in order to obtain the respective quantities of copper, zinc and magnesium in the composition of the invention as defined herein, namely, expressed as % by weight relative to the total weight of the composition, for copper from 0.0000025 to 0.000005%, preferably from 0.0000030 to 0.0000045%, for zinc from 0.00002 to 0.000045%, preferably from 0.000025 to 0.000040%, and for magnesium from 0.00001 to 0.000025%, preferably from 0.000015 to 0.000020%.

[0045] Myrtle essential oil can advantageously be an essential oil of green myrtle, *Myrtus communis*, for example, a green myrtle essential oil from Corsica. This oil is preferably organically grown. The oil can be obtained by steam distillation of the aerial parts of the plant, that is, the flowers, leaves, and stem of the myrtle. This distillation can be carried out using a steam generator, from which the vaporized fluid is conveyed through tubing to the bottom of an extraction chamber in which the aerial parts of the plant are enclosed. This installation is connected to a regulated pressure maintenance device. The extraction fluids are then conveyed to a cooling coil. The final separation of the extraction fluids and the components of the essential oils is carried out at atmospheric pressure by density difference.The extraction of these oils can also be carried out using supercritical CO2. The concentration of myrtle essential oil can advantageously be from 0.02 to 1% by weight relative to the total weight of the composition. Indeed, tests carried out by the inventors show increased effectiveness of the composition described herein at this concentration.

[0046] The composition also includes vitamin C and / or a derivative thereof. For example

[0047] The concentration of vitamin C or one of its derivatives may range from 0.5% to 10% by weight, preferably, in the composition described herein, from 1% to 3% by weight relative to the total weight of the composition. It may be vitamin C or one of its cosmetically acceptable derivatives. Examples include ascorbic acid (INCI: ascorbic acid), ascorbyl tetraisopalmitate (INCI: ascorbyl tetraisopalmitate), 3-O-ethyl ascorbic acid (INCI: 3-O-ethyl ascorbic acid), ascorbyl glucoside (INCI: ascorbyl glucoside), magnesium ascorbyl phosphate, and sodium ascorbyl phosphate. When magnesium ascorbyl phosphate is used, the magnesium contribution from this ascorbic acid derivative is considered in the amount of magnesium remaining to be added to the Cu, Zn, and Mg combination described herein. The composition according to the present invention may further comprise spherulites.The term "spherulites" refers to vesicles composed of alternating lipid bilayers approximately one micron thick. These may advantageously be spherulites of myrtle essential oil and, where applicable, immortelle, for example, Corsican myrtle and, where applicable, Corsican immortelle, preferably from organic farming in Corsica. The concentration of essential oil spherulites is advantageously 0.05 to 7% by weight, for example, 0.25 to 3%, or 0.30 to 2.8% by weight, relative to the total weight of the composition. These spherulites further enhance the efficacy of the composition described herein. For example, the composition according to the present invention may include a concentration of immortelle spherulites, for example of Corsican immortelle, of 0.25 to 3%, for example of 0.40% to 1.5% by weight, relative to the total weight of the composition.For example, the composition according to the present invention may include a concentration of myrtle spherulites, for example of Corsican myrtle, of 0.25 to 3%, for example of 0.40% to 1.5% by weight, relative to the total weight of the composition.

[0048] The composition according to the present invention may further include other active ingredients usable in cosmetics or dermatology. These may include, for example, moisturizing, restructuring, and / or soothing agents. When present, these active ingredients may be at concentrations that allow them to be effective, for example, from 0.1% to 50% by weight, or from 0.5% to 45% by weight, relative to the total weight of the composition.

[0049] The composition of the invention may, for example, comprise Helichrysum italicum or immortelle oil, preferably an immortelle essential oil, for example, an essential oil of Corsican immortelle. The concentration of immortelle essential oil is preferably from 0.001% to 2%, for example, from 0.01% to 1% by weight of the total composition. The immortelle oil or essential oil may be obtained, for example, via the processes described above for myrtle oil.

[0050] The combination of immortelle and myrtle essential oils also creates a beneficial synergy for skincare, acting holistically to combat the effects of aging on the face and neck by improving skin nutrition and regeneration, cell longevity, and the appearance of pigmentation spots.

[0051] The various compounds in the composition of the present invention can be free or included in delayed-release microspheres so as to create a residual effect.

[0052] The composition of the present invention may further include a cosmetically acceptable carrier, chosen according to the desired formulation of the composition. Those skilled in the art will be able to adapt the formulation according to the desired form of the product. This may be an emulsion, for example, an oil-in-water (O / W) emulsion or a water-in-oil (W / O) emulsion.

[0053] The composition described herein may be in any form known to those skilled in the art in the field of cosmetics and dermatology. It may, for example, be a serum, cream, milk, lotion, gel, or mask formulation, without any particular galenic restrictions other than chemical compatibility with the composition of the invention and compatibility for application to the skin.

[0054] The inventors have demonstrated in a surprising way that the cosmetic use of a composition according to the invention advantageously strengthens and firms the skin, energizes the skin's radiance, hydrates the skin, improves comfort, makes wrinkles and fine lines less visible, smooths the skin's texture, makes the skin visibly younger, and combats dullness.

[0055] The present invention also relates to the cosmetic use of a composition according to the invention, for one or more of the following applications: strengthening and firming the skin, boosting the radiance of the skin, moisturizing the skin, improving comfort, making wrinkles and fine lines less visible, smoothing the skin texture, making the skin visibly younger, fighting against dull complexion.

[0056] The present invention also relates to a non-therapeutic cosmetic care method comprising the application to the skin of an effective amount of a composition according to the invention.

[0057] In the present, "cosmetic care" means, for example, the cutaneous application of a composition according to the invention.

[0058] According to the invention, the non-therapeutic cosmetic care process can be an anti-aging cosmetic treatment, a cosmetic treatment for the prevention of skin aging, a skin-hydrating cosmetic treatment, a nourishing cosmetic treatment.

[0059] According to the invention, the treatment process may be a non-therapeutic cosmetic treatment to strengthen and firm the skin and / or boost the radiance of the skin and / or moisturize the skin and / or improve comfort and / or make wrinkles and fine lines less visible and / or smooth the skin texture and / or make the skin visibly younger, combat dull complexion.

[0060] For this application, the dosage forms described above can be used, for example. The application to the skin can therefore be carried out depending on the dosage form used.

[0061] The application can be any application desired by the user, for example, a daily, twice-daily, weekly, and / or bi-monthly application. It could be, for example, an application used once a day, twice a day, or more frequently.

[0062] This may involve, for example, a simple application to the skin or an application accompanied, for example, by a massage of the skin with the composition of the present invention.

[0063] The application is carried out with a sufficient quantity of the product to ensure that the entire surface, for example, the skin, to be treated is covered. This could be, for example, a classic application, like a cream on the skin. It could also be an application to create a treatment mask.

[0064] Other advantages will become apparent to the person skilled in the art in light of the examples given below, which are given for illustrative purposes.

[0065] Brief description of the figures

[0066] Figure 1 shows a diagram representing the results obtained as a function of the cosmetic compositions. In this figure, the diagonally hatched bars

[0067]

[0068] correspond to the results obtained by a composition of the invention and the horizontally hatched sticks (H) correspond to the results obtained with a prior art composition.

[0069] EXAMPLES Example 1: Example of skincare creams made from compositions of the present invention

[0070] The compositions described in this example are creams. They were prepared by mixing the different ingredients described in Table 1 below.

[0071] The ranges of values ​​are summarizing the weight concentrations tested in the tests shown in Example 3.

[0072] Table 1: Compositions tested for the face

[0073]

[0074]

[0075] "qs" corresponds, for example, to the quantity of preservatives to be used in order to obtain the desired effect.

[0076] "qsp" means "quantum satis" or "sufficient quantity for" and corresponds to the amount of an ingredient to be added to obtain the desired composition.

[0077] Example 2: Comparative compositions of the prior art

[0078] In this example, prior art compositions B described in Table 2 were prepared.

[0079] Table 2: Tested B compositions

[0080]

[0081]

[0082] The essential and vegetable oils are the same as those used in example 1 above.

[0083] Example 3: Experiment carried out to compare the compositions of examples 1 and 2 above.

[0084] The objective of this study is to assess the beneficial and unexpected effects of the compositions of the present invention compared to similar prior art compositions, but not exhibiting the specific characteristics of the invention.

[0085] An evaluation of the skin tolerance, efficacy and acceptability of compositions A and compositions B, applied under normal conditions of use for 84 days, at home, on 30 adult volunteers was carried out.

[0086] The volunteers were women aged between 35 and 70, with all skin types (a maximum of 50% of them having sensitive facial skin).

[0087] Method :

[0088] For each composition, a home application by volunteers, for 84 days, was carried out under the following conditions:

[0089] - Application area: Face and neck

[0090] - Quantity of product: As much as necessary

[0091] - Frequency and duration: Twice a day (morning and evening) for 84 days.

[0092] - Application conditions: Apply morning and evening, by massaging onto clean, dry skin, on the face and neck.

[0093] The first application was carried out in the laboratory by the volunteer, under the supervision of a clinical technician.

[0094] Evaluations were carried out 28 days after the first application of the composition.

[0095] The assessments were carried out according to the general principles of medical ethics in clinical research derived from the Declaration of Helsinki (June 1964) and its successive amendments, the international recommendations relating to Good Clinical Practice for the conduct of clinical trials for medicinal products ICH E6 (R1) of 10 / 06 / 1996 (CPMP / ICH / 1 35 / 95), Directive 2001 / 20 / EC of the European Parliament and of the Council (OJ / EC of 01 / 05 / 2001), the French Public Health Code (latest edition) and the recommendations of Colipa - August 1997: "Guidelines for the assessment of human skin compatibility". The study was carried out in accordance with European Directive 95 / 46 / EC and Law No. 78 / 17 of 06 / 01 / 1978.

[0096] In this example, assessments of the crow's feet wrinkle, in particular the depth of the main wrinkle, fine lines under the eyes, the radiance of the complexion, the evenness of the complexion, the nourished appearance of the skin, the smoothness of the skin and the fineness of the skin texture were carried out by visual and / or tactile scoring by the dermatologist and a trained evaluator.

[0097] In particular, the following parameters were analyzed / evaluated across all volunteers:

[0098] Skin strengthening: the skin is fortified / the skin is stronger / my skin's radiance is boosted / firmer; skin hydration: the skin is hydrated throughout the day.

[0099] Skin comfort: the skin feels comfortable throughout the day.

[0100] Wrinkle reduction: wrinkles are softened / fine lines and wrinkles are less visible.

[0101] Skin smoothing: the skin appears smoother / the skin texture is smoother.

[0102] Skin rejuvenation: the skin looks visibly younger

[0103] Skin vitality: the skin is full of vitality / the skin is toned

[0104] Skin tone: the product combats dullness / the skin is rid of the dull veil

[0105] All the results obtained after 28 days have been recorded in Table 3 below.

[0106] Table 3: Results after 28 days of composition evaluation

[0107]

[0108] The attached figure 1 presents a diagram of the results obtained according to the two cosmetic compositions, A and B.

[0109] As demonstrated by these results, represented in Figure 1 and in Table 3 above, compositions according to the invention advantageously and significantly strengthen and firm the skin, boost the radiance of the skin, moisturize the skin, improve comfort, make wrinkles and fine lines less visible, smooth the skin texture, make the skin visibly younger, and combat dullness.

[0110] Further tests were carried out with compositions A and B, each containing an additional 0.035% or 0.06% by weight of Helichrysum essential oil (immortelle oil) and / or 0.5% by weight of immortelle spherulites and / or 0.5% by weight of Myrtle spherulites. The results obtained confirm the results in Table 3, and even improve upon them in some cases.

[0111] In addition, and surprisingly, the composition according to the invention advantageously improves and revives skin tone, corrects uneven skin tone, increases skin resistance to external aggressions, including pollution, stress, and climate, and improves the user's sense of well-being.

Claims

DEMANDS 1. Cosmetic or dermatological composition comprising, as a percentage by weight relative to the total weight of the composition: 3 to 4% by weight of at least one vegetable oil rich in essential polyunsaturated fatty acids, a combination of copper, zinc and magnesium, with or 0.002 to 0.02% copper gluconate or an equivalent amount of another ingredient providing an equivalent amount of copper, or 0.02 to 0.2% zinc gluconate or an equivalent amount of another ingredient providing an equivalent amount of zinc, and o 0.02 to 0.2% magnesium aspartate or an equivalent amount of another ingredient providing an equivalent amount of magnesium, an essential oil of myrtle, and vitamin C and / or a derivative thereof.

2. Composition according to claim 1, wherein the essential fatty acids are selected from linolenic acid, omega-3 linolenic acid, omega-6 linolenic acid, alpha-linolenic acid, gamma-linolenic acid, docosahexaenoic acid, fatty acids of the omega-3 and -omega-6 families, or a mixture of two or more of these essential fatty acids.

3. Composition according to claim 1 or 2, wherein the vegetable oil is selected from the group comprising Echium plantagineum oil, Camelina sativa oil, Oenothera biennis oil, Borago officinalis oil, Linum usitatissimum oil, Salvia hispanica oil, Ribes nigrum seed oil, Brassica napus L. oil, Vitis vinifera seed oil, Juglans regia nut oil, Triticum vulgaris germ oil or a mixture of two or more of these oils.

4. Composition according to any one of the preceding claims, wherein the vegetable oil is a mixture of vegetable oils of Camelina sativa, Echium, Oenothera biennis, and Borago officinalis.

5. Composition according to any one of the preceding claims, wherein the total concentration of vegetable oil rich in polyunsaturated fatty acids is 3.09 to 3.61% by weight, relative to the total weight of the composition.

6. Composition according to any one of the preceding claims, wherein the essential oil of myrtle is present in a concentration of 0.020% to 1% by weight relative to the total weight of the composition.

7. Composition according to any one of the preceding claims, said composition further comprising an essential oil of immortelle.

8. Composition according to any one of the preceding claims, further comprising spherulites of immortelle and / or myrtle essential oil, wherein the quantity of spherulites present in the composition is from 0.25% to 3% by weight relative to the total weight of the composition.

9. Composition according to any one of the preceding claims, wherein vitamin C and / or one of its derivatives is present at a concentration of 0.5% to 10% by weight relative to the total weight of the composition.

10. Cosmetic use of a composition according to any one of claims 1 to 9, for one or more of the following applications: strengthening and firming the skin, boosting skin radiance, moisturizing the skin, improving comfort, making wrinkles and fine lines less visible, smoothing skin texture, making skin visibly younger, combating dull complexion.

11. Non-therapeutic cosmetic care method comprising a step of applying to the skin of a person an effective quantity of a composition as defined in any one of claims 1 to 9.

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