JP2000302661A - Cosmetics - Google Patents

Abstract

(57) [Summary] (Corrected) [Solution] A cosmetic containing (A) an extract of chamomile and (B) one or more plant extracts selected from extracts of fruit and Jiyu. Further, component (C): the following general formula (1) [Wherein, R ¹ represents a linear or branched alkyl group having ¹ to 16 carbon atoms, and R ² represents a hydrogen atom, a hydroxyl group or an alkoxyl group having 1 to 6 carbon atoms]. Contains cosmetics. [Effect] Excellent whitening effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a cosmetic having an excellent whitening effect.

[0002]

2. Description of the Related Art Generally, skin spots and freckles are activated by melanocytes due to irritation caused by exposure to sunlight, hormonal abnormalities, or genetic factors. As a result, melanin synthesized by melanocytes is converted into melanocytes in the skin. It is said to be caused by abnormal deposition on the surface.

[0003] In order to prevent such spots and freckles, a whitening cosmetic containing a component inhibiting melanin synthesis, such as L-ascorbic acid and its derivatives, hydroquinone derivatives, kojic acid and its derivatives, and placenta extract, has been conventionally used. Is used. However, all of these substances show only a weak melanin-suppressing effect. Therefore, when each of them is used alone in a cosmetic, a sufficient whitening effect cannot be obtained.

Attempts have been made to enhance the whitening effect by combining these substances with various plant extracts.
For example, a combination of kojic acid or a derivative thereof with a plant extract such as chamomile or sicon (JP-A-3-236322), or a combination of a hydroquinone glycoside with a crude drug extract such as mulberry or aloe (JP-A-5-213) No. 139950), a combination of kojic acid and a derivative thereof with a plant extract such as gardenia and eucalypt (JP-A-7-17846).
Combination of Kojic acid and its derivatives with plant extracts such as acerola and ginkgo (JP-A-7-61915)
Publication). However, even with these combinations, the whitening enhancing effect is not sufficient, and a satisfactory one has not been obtained.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cosmetic having an excellent whitening effect.

[0006]

SUMMARY OF THE INVENTION The present inventors have proposed a whitening cosmetic which exhibits excellent whitening effect by preventing pigmentation by using a chamomile extract in combination with a plant extract extracted from fruit or groundnut. Was obtained.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The component (A) chamomile extract used in the present invention is chamomile [Matric]
ariachamomillaL. (Composite
ae)] Flowers in water; hydrophilic organic solvents such as methanol, ethanol, propanol, propylene glycol, and 1,3-butanediol; castor oil, persic oil, soybean oil, sunflower oil, isopropyl myristate, and neo-dicaprate It can be obtained by extraction with a lipophilic organic solvent such as pentyl glycol, liquid paraffin, and squalane, or a mixed solvent thereof. In the present invention, one or more kinds of chamomile extract thus obtained can be used. Above all, an oil-soluble chamomile extract is preferable because it gives an excellent whitening effect, and an extract using squalane is particularly preferable.

[0008] Such chamomile extract generally contains camazulene, umbelliferone, 7-methoxycoumarin, matricin, matricalin, taraxasterol, upeol, apiin, spiroether compounds and the like. Specifically, spiro ether compounds described in JP-A-7-206657 are mentioned as active ingredients.

[0009] A preferred amount of the component (A) is 0.00001 to 5% by weight as a solid content in the total amount of the cosmetic.
In particular, when 0.0005 to 3% by weight, more preferably 0.001 to 2% by weight, a sufficient whitening effect is obtained and the storage stability of the product is excellent.

[0010] Among the plant extracts of the component (B) used in the present invention, the fruit extract (Rose Fruit Extract) can be obtained by extracting from the fruit of rose multiflora Thunberg or a closely related species thereof. it can.

[0011] In addition, Burnu Extract is
Rose moth (Sangui sorbaofficinalis Linn)
e) or a variant thereof by extraction from the roots or rhizomes.

The content of the plant extract of the component (B) in the cosmetic of the present invention is preferably 0.00001 to 5% by weight as a solid content in the total amount of the cosmetic from the viewpoint of whitening effect and storage stability. Especially 0.0005 to 3% by weight, more preferably 0.001 to
2% by weight is preferred.

It is preferable that the cosmetic of the present invention further contains a chromone derivative represented by the following general formula (1) as the component (C), since the whitening effect is enhanced.

[0014]

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Wherein R ¹ represents a linear or branched alkyl group having ¹ to 16 carbon atoms, and R ² represents a hydrogen atom, a hydroxyl group or an alkoxyl group having 1 to 6 carbon atoms.

Among the compounds represented by the general formula (1), those in which R ¹ is a linear or branched alkyl group having 4 to 9 carbon atoms and R ² is a hydrogen atom, a hydroxyl group or a methoxy group preferable. One or more of these compounds can be used.

When the component (C) is used, its content is preferably 0.01 to 20% by weight based on the total amount of the cosmetic.
In particular, 0.1 to 10% by weight, more preferably 0.1 to 5% by weight is preferable because the whitening effect is enhanced and the feeling in use is improved.

When the cosmetic of the present invention further contains one or more selected from an ultraviolet absorber and an ultraviolet scattering agent,
This is preferable because the production of melanin due to sunburn can be suppressed. The ultraviolet absorber and the ultraviolet scattering agent are not particularly limited, and any of oil-soluble or water-soluble ultraviolet absorbers and ultraviolet scattering agents that are commonly used can be suitably used.

Among them, octyldimethyl-p-aminobenzoic acid, 2-ethylhexyl-p-methoxycinnamate, 4-methoxy-4'-t-butyldibenzoylmethane, 1- (3,4-dimethoxyphenyl) -4 , 4-Dimethyl-1,3-pentanedione, 2-hydroxy-4
UV absorbers such as methoxybenzophenone; UV scattering agents such as zinc oxide, titanium oxide and iron oxide are preferred.
When these components are used, the content thereof is preferably 0.001 to 30% by weight based on the total amount of the cosmetic, and particularly preferably 0.03% by weight.
It is preferably 1 to 30% by weight, more preferably 0.05 to 20% by weight.

In the cosmetic of the present invention, in addition to the above-mentioned components, various optional components usually used in cosmetics, quasi-drugs, pharmaceuticals and the like can be appropriately compounded as required. For example, water, ethanol, oily components, humectants, thickeners, preservatives,
Emulsifier, medicinal ingredient, powder, colorant, fragrance, emulsion stabilizer,
pH adjusters and the like.

The cosmetic of the present invention can be produced according to a conventional method. In addition, the cosmetic of the present invention is not limited to general skin cosmetics, but includes quasi-drugs, topical drugs, and the like, and its dosage form may be arbitrarily selected according to the purpose. Can be. That is, it can be in the form of a cream, ointment, emulsion, solution, gel or the like, or in the form of a pack, lotion, powder, stick or the like.

[0022]

The cosmetic of the present invention prevents pigmentation and exhibits an excellent whitening effect, so that it can be used as a cosmetic for preventing spots and freckles due to sunburn.

[0023]

EXAMPLES Examples 1 to 4 and Comparative Examples 1 to 5 Creams having the compositions shown in Table 2 were produced and evaluated for their whitening effect. Table 2 shows the results.

(Preparation method) The oil phase components shown in Table 2 were mixed and mixed.
The resulting mixture was heated to 60 ° C. and dissolved therein, and the aqueous phase component heated to 60 ° C. was added thereto with stirring, and further cooled to room temperature with stirring to obtain a cream.

(Whitening Effect Test for UV-B-Induced Pigmented Spots) Twenty test subjects were irradiated with the UV-B region ultraviolet rays twice the minimum erythema amount once a day for 2 days. A sample is continuously applied to the induced pigment spots (twice a day,
(One month) to examine the whitening effect. Evaluation,
Colorimetry was performed using a color difference meter (CMS-1200 manufactured by Murakami Color Co., Ltd.), L * value was calculated from the obtained Munsell value, and ΔΔL * value indicating the recovery was used. The ΔΔL * value is defined by the following equation. That is, L * of the test site immediately before the start of sample application and L * of the test site where no sample was applied were L0 and L0 ', respectively, and L * value of each site one month after continuous application was L1 and L, respectively.
As 1 ′, a numerical value calculated by the following equation is ΔΔL *. ΔΔL * = (L1−L0) − (L1′−L0 ′) The results are shown in Table 1.
* Evaluation points corresponding to the values were obtained and shown in Table 2 by the average value of 20 persons.

[0026]

[Table 1]

[0027]

[Table 2]

From the results in Table 2, it can be seen that the cream of the present invention synergistically improved the whitening effect by the combination of the components (A) and (B).

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Kusunoki 2606 Kabane-cho, Akaga-cho, Haga-gun, Tochigi Prefecture, Japan Kao Co., Ltd. (72) Inventor Yusuke Shibuya 2606, Kabashi-cho, Akabane, Haga-gun, Tochigi Prefecture, Kao Corporation (72) Inventor Akira Hachiya 2606 Kabane-cho, Akaga-cho, Haga-gun, Tochigi Pref. In Kao Co., Ltd. (72) Inventor Akemi Kobayashi 2606, Kabachi-cho, Akaga-cho, Haga-gun, Tochigi Pref. Kao Co., Ltd. AB242 AC022 AC072 AC122 AC302 AC312 AC392 AC422 AC532 AC841 AC842 AD162 CC05 DD31 EE16

Claims (3)

[Claims] 1. A cosmetic containing (A) an extract of chamomile and (B) one or more plant extracts selected from extracts of fruit and Jiyu. 2. Component (C): The following general formula (1): [Wherein, R ¹ represents a linear or branched alkyl group having ¹ to 16 carbon atoms, and R ² represents a hydrogen atom, a hydroxyl group or an alkoxyl group having 1 to 6 carbon atoms]. The cosmetic according to claim 1, which contains. 3. The cosmetic according to claim 1, wherein the component (A) is a chamomile extract obtained by extraction with squalane.