FR2829931A1 - Use of microcapsules containing a mixture of meadowfoam oil and prune kernel oil to improve skin softness and silkiness by constant topical delivery of the mixture - Google Patents

Abstract

Microcapsules containing a mixture of meadowfoam oil and prune kernel oil are used to improve skin softness and silkiness by constant topical delivery of the mixture.

Description

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The Cosmetics industry has put on the market a large quantity of finished products, using all kinds of galenic forms such as, for example: O / W and W / O emulsions, milks, ointments, hair lotions, shampoos, soaps, powders, sticks and pencils, sprays, body oils.

These finished products convey and facilitate the cutaneous availability of molecules or mixtures of molecules synthesized industrially by chemical means, by biotechnology or naturally contained in plant or animal extracts.

These molecules carry the desired biological activity which is at the very base of the production and marketing of these finished products.

To deliver these molecules and these products to the cutaneous or capillary level, it is necessary to realize a topical, regular application with, in certain cases, imperatives to be respected, such as, for example, the daily repetitiveness, before or after another application of any complementary product.

To overcome this disadvantage and this constraint, it has been proposed to fix the molecules on clothing and underwear textiles by all kinds of physical or chemical processes (for example US4234627, FR 2789073, EP0436729).

With the prevention or improvement of wrinkles, the improvement of the cutaneous aspect characterized by an extreme softness and a durable silky appearance is among the most sought after cosmetic effects.

The invention that is the subject of this patent application lies in the use of microcapsules containing a mixture of dew grass oil / prune almond oil permanently fixed on any commercial textile, for example, those of which are made stockings and pantyhose. Dew Grass is also known as Cropure meadowfoam.

 The proportions of each component in the mixture can vary between 0 and 100% respectively.

 In the example of activity presented here, the mixture consists of 70% Dew Grass Oil and 30% Prune Amandon Oil.

 With this combination, we obtain an obvious improvement in the softness of the skin and a durable silky appearance.

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These effects can be explained by the fact that: Dew-herb oil contains long-chain fatty acids (C20-C22) * Prune-almond oil is composed of 70% oleic acid and of polyunsaturated fatty acids, essential for the cutaneous lipid membrane.

In conjunction with the mixture of dew grass oil and prune dam oil, it is possible to use other active ingredients, alone or mixed together.

The encapsulation of the mixture of dew grass oil / prune dandelion oil, alone or in combination with another active ingredient or with other active agents, can be carried out according to any conventional method or not, such as for example that described in US Pat. application FR / 00 patent. 06604.

Depending on the properties desired for the final product (for example: stability over time or speed of delivery of the encapsulated product), it is possible to choose or adapt the encapsulation process, to obtain microcapsules whose size varies between 2 and 100 μm.

For those skilled in the art, it is easy to determine the average amount of the mixture. M // e I am iMe //! Me 'MMM pMMM, and those of other assets possibly added to this mixture! For example, the protein is trapped in the microcapsules, for example, from an aliquot of microcapsules that have been exploded mechanically or chemically beforehand.

The amount of the mixture of Dew Grass / Prune Almond Oil in the microcapsule suspension is 35 to 65% (w / w).

To illustrate this discovery, the following example shows the results of a sensory test performed as part of the development of this project.

This sensory study was set up on 24 female volunteers, to evaluate the effect of a 15% nylon / 85% polyamide veil glue, carrying microcapsules containing the mixture of dew oil / olive oil. Prune almond.

For this test, only one leg of the pantyhose was treated by the microcapsules, the volunteer can at any time compare the sensations on his left leg and his right leg.

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The side of the leg with the treated side is randomized (12 on the right, 12 on the left). Two tights are given to the volunteers for a trial over 5 days according to the following diagram: wearing the first tights from D + 1 to D + 2, wearing the second tights from D + 3 to D + 5.

Les panélistes avaient un questionnaire à 4 entrées, réponses OUI ou NON, à remplir le dernier jour de l'essai. Le OUI traduisait le sentiment d'amélioration du critère concerné alors que le NON indiquait une aggravation de ce paramètre. To day 2 day 3 day 4 day 5 day> Wearing tights N'l Wearing tights? 2 4 b 4>

The panelists had a 4-entry questionnaire, YES or NO, to complete the last day of the test. The OUI reflected the feeling of improvement of the criterion concerned while the NO indicated a worsening of this parameter.

The answers yes or no for each of the legs, to the following 4 questions are expressed ep%, and are reported in the following table:

jambe portant le bas non traité. r Ensemble, les différents critères permettent aux panélistes d'afficher une satisfaction globale d'environ à 85 %. <Tb>
<tb> Percentages <SEP> of <SEP> YES
<tb> flexibility <SEP> Comfort <SEP> Sweetness <SEP> Silky <SEP> appearance
<tb> Side <SEP> no <SEP> Treated <SEP> 3.1 <SEP> 2.2 <SEP> 1.7 <SEP> 1.2
<tb> Grade <SEP> Treated <SEP> 19.3 <SEP> 23.7 <SEP> 35.9 <SEP> 41.4
<tb> Differential <SEP>% <SEP> 16.2 <SEP> 21.5 <SEP> 34.2 <SEP> 40.2
<Tb>
On these 4 criteria, there is a clear difference in favor of the YES responses, thus going in the direction of improvement, between the leg carrying the low treated with the mixture of dew herb oil / prune almond oil by report to the

leg with untreated bottom. Together, the different criteria allow panelists to show an overall satisfaction of about 85%.

This patent application therefore describes the use of the mixture of dew herb oil / prune almond oil incorporated in microcapsules, fixed by any means whatsoever, on any textile used for the manufacture of clothing and undergarments. clothing, especially on stockings or tights to obtain an extreme softness and a long-lasting silky appearance The microcapsules have a size that varies between 2 and 1 00 m and the amount of mixture of dew grass oil / damandon oil prune in the microcapsule solution varies between 35 and 65%.

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The mixture of dew grass oil / prune dammond oil is, or is not, associated or bonded to or mixed with any other molecule (s) or product (s), alone or in combination with each other, in the microcapsules.

The microcapsules containing the mixture of dew grass oil / prune mandon oil, alone or in combination, or bound, or mixed with any other molecule or product, are used or not with other active or fixed molecules or products or deposited in any way on the fabric used.

Claims (8)

1. Using a mixture of dew herbal oil (other name: Cropure meadowfoam) / prune kernel oil in microcapsules to achieve a significant skin improvement characterized by extreme softness and a long-lasting silky appearance in the time by constant topical delivery of the encapsulated mixture. 2. Microcapsules according to claim 1 characterized in that in the mixture they contain, the proportion of each component in the mixture can vary respectively between 0 and 100%, preferably with 70% of Herb oil! dew (other name: Cropure meadowfoam) and 30% prune almond oil. 3. Microcapsules according to any one of claims 1 to 2 characterized in that their size may vary between 2 and 100 00 m. 4. Microcapsules according to any one of claims 1 to 3 characterized in that the amount of mixture of dew grass oil / prune dandelion oil in the microcapsule solution varies between 35 and 65%. 5. Microcapsules according to one of claims 1 or 4 characterized in that they contain other molecules associated with or linked to the mixture of grass oil of dew prune Amandon oil. 6. Use of microcapsules according to one of claims 1 to 5 by fixing, by any means whatsoever, these microcapsules on any textile used for the manufacture of clothing or undergarments. 7. Use of microcapsules according to claim 6, characterized in that the clothes or undergarments are stockings or tights. 8. Use of the microcapsules according to one of claims 1 to 5, with other active agents or molecules or products fixed or deposited in any manner whatsoever on the fabric used according to one of claims 6 to 7.