JP3886116B2 - Topical skin preparation - Google Patents

Description

【００５６】
【表２】

【００５７】
【表３】

【００５８】
表３より明らかなように、対照においては、ＵＶＢ照射日数が１０週を越える頃には皮膚に形成されたしわの深さは中程度にまで達し、２０週後には深いしわの形成が認められていた。有効成分として、ヤナギ科（Salicaceae）植物抽出物のみを含有する比較例１及び比較例６塗布群では、２０週後に軽微なしわの形成が認められる程度で、しわの形成は良好に抑制されており、また抗炎症剤を含有し、ヤナギ科（Salicaceae）植物抽出物を含有しない他の比較例塗布群でも、対照に比べてしわ形成に対する抑制効果は認められていたが、それぞれ対応する実施例塗布群では、いずれも２０週後に微小なしわの形成が認められた程度で、それぞれ対応する比較例塗布群に比べて、しわ形成に対する抑制効果は有意に向上していた。
【００５９】
続いて、本発明の実施例１〜実施例１３について使用試験を行い、皮膚の老化症状の改善効果を評価した。その際、実施例９〜実施例１３において、配合したヤナギ科（Salicaceae）植物抽出物及び抗炎症剤を表４に示すように代替して比較例９〜比較例１３とし、上記比較例１〜比較例８とともに同時に使用試験に供した。
【００６０】
【表４】

【００６１】
皮膚の老化症状の改善効果は、小じわ形成及び皮膚弾性の低下が顕著に認められる４０才代〜６０才代の女性パネラー２０名を１群とし、各群に実施例及び比較例のそれぞれをブラインドにて１日２回、２カ月間連続して使用させて評価した。小じわの程度については肉眼観察及び写真撮影により評価し、皮膚弾性についてはキュートメーターにより測定して、それぞれ使用試験開始前及び終了後の状態を比較し、「改善」，「やや改善」，「変化なし」の３段階で評価した。結果は、各評価を得たパネラー数にて表５に示した。
【００６２】
【表５】

【００６３】
表５より明らかなように、有効成分として抗炎症剤を含有するがヤナギ科（Salicaceae）植物抽出物を含有しない比較例２〜比較例５，比較例７，比較例８及び比較例１０〜比較例１２の各使用群においては、小じわ及び皮膚弾性の改善傾向は認められるものの、明確な改善を認めたパネラーはさほど多くなかった。ヤナギ科（Salicaceae）植物抽出物のみを含有する比較例１，比較例６，比較例９，比較例１３の各使用群のそれぞれにおいては、かなり良好な小じわ及び皮膚弾性の改善傾向が認められていたが、実施例使用群においては、それぞれ対応する比較例使用群に比べて、明確な改善を認めたパネラーは有意に多くなっていた。
【００６４】
また、本発明の実施例１〜実施例１３及び比較例１〜比較例１３について、肌荒れ症状の改善効果を評価した。肌荒れ症状の改善効果は、顕著な肌荒れ症状を呈する２０才代〜６０才代の女性パネラー２０名を１群とし、各群に実施例及び比較例のそれぞれをブラインドにて１日２回、２カ月間連続して使用させて評価した。使用試験開始前及び終了後の皮膚の状態を、表６に示す評価基準に従って評価，点数化し、２０名の平均値を算出して表７に示した。
【００６５】
【表６】

【００６６】
【表７】

【００６７】
表７より明らかなように、本発明の実施例使用群ではいずれにおいても顕著な肌荒れの改善が認められ、使用試験終了後において、皮膚の状態はほぼ良好〜良好な状態にまで改善されていた。これに対し比較例使用群においても、かなり良好な肌荒れの改善が認められていたが、その程度はそれぞれ対応する実施例使用群に比べて小さいものであった。
【００６８】
なお実施例１〜実施例１３については、２５℃で６カ月間保存した場合において状態の変化は全く認められず、男性パネラー３０名による４８時間の背部閉塞貼付試験においても、問題となる皮膚刺激性反応は認められなかった。
【００６９】
【発明の効果】
以上詳述したように、本発明により、安定性及び安全性が良好で、肌荒れ及び皮膚の老化の防止，改善効果が相乗的に向上した皮膚外用剤を得ることができた。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an external preparation for skin which synergistically improves the effect of preventing and improving rough skin and aging of the skin. For more details, willow family (S0alicaceae) It relates to a skin external preparation comprising a combination of a plant extract and an anti-inflammatory agent.
[0002]
[Prior art]
It is known that inflammatory reaction of the skin and aging of the skin progress due to aging, exposure to ultraviolet rays, oxidative stress due to reactive oxygen species generated in the skin tissue, contact with drugs and various allergens, and the like. In the field of topical skin preparations, many physiologically active ingredients such as reactive oxygen species scavengers, anti-inflammatory agents, and antiallergic agents have been searched and examined in order to prevent inflammation and aging of the skin. In addition, as it becomes clear that aging symptoms of skin progress due to modification of collagen, which is a component of the dermis matrix, due to aging and stress, studies on substances that have the effect of promoting their production in skin tissue Has been made. In recent years, there has been an increasing tendency to demand such components from plants, reflecting the natural and plant orientation of consumers.
[0003]
However, among the above-mentioned ingredients of plant origin that have already been reported, the activity is low, so that a considerably high concentration is required to obtain a sufficient action effect when blended with an external preparation for skin, stability or safety. When there are problems with sexuality, or there are things that give unfavorable color or odor to the external preparation for skin, when blended with external preparation for skin, all of the stability and safety of the preparation, and the action effect There are few things that can be satisfied in terms of the situation. In addition, since the inflammatory reaction and aging of the skin proceed with various factors involved in a complicated manner, sufficient effects cannot be obtained even if a substance that acts only on a part of the reaction is used.
[0004]
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to obtain an external preparation for skin that suppresses complex skin inflammatory reactions and the like, and synergistically improves the effect of preventing and improving rough skin and aging of the skin.
[0005]
[Means for Solving the Problems]
As a result of various studies to solve the above-mentioned problems, the present inventors have studied the willow family (Salicaceae) By using a plant extract and one or more anti-inflammatory agents in combination in an external preparation for skin, the prevention of rough skin and aging of the skin, and a synergistic improvement in the improvement effect can be obtained. As a result, the present invention has been completed.
[0006]
Willow family (Salicaceae) Regarding the effectiveness of the plant extract, the whitening effect of dihydromyricenan contained in leaves (Japanese Patent Laid-Open No. Sho 63-316711) and the antimutagenic action (Japanese Patent Laid-Open No. 1-175932), and the histamine release inhibitory action of bark extract ( JP-A-10-287582), the fibroblast activation action of salicin contained in a large amount in bark and leaves (JP-A-11-80002) and the like are already known.
[0007]
In addition, anti-inflammatory agents have long been blended in topical skin preparations in the hope of improving skin roughness.Salicaceae) The effect of the present invention obtained by using a plant extract and an anti-inflammatory agent in combination has not been suggested at all.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Willows used in the present invention (Salicaceae) Plants include Pepper willow (Pepper willow)Chosenia arbutifolia (Pallas) A. Skvortz;Chosenia bracteosa Nakai), the willow tree (Yamanashi, Poplar) genusPopulus sieboldi Miq.), Dero (Dronoki) (Populus maxmowiczii Henry), Vulgarine Willow (Gindro) (Populus alba L.), American black willow (Populus deltoides Marsh .;Populus monilifera Ait.;Populus angulata Aiv.), Kotoka willow (Populus euphratica Oliv.), European black porcupine (Populus nigra L.), boxwood willow (Populus nigra var.italica Koehne), European Porcupine (Populus tremula), Willow genus caspian willow (Salix acutifolia L.), European willow (Salix alba L .;Salix aurea Salisb.), Weeping willowSalix babylonica L.), Wildcat Willow (Bacco willow) (Salix bakko Kimura), red willow (Salix chaenomeloides Kimura), Nagabagawa Willow (Salix gilgiana Seemen.), Pussy willow (Enocoro willow, kawa willow) (Salix gracilistyla Miq.), Inukoryanagi (Salix integra Thunb.), Shibanagi (Salix japonica Thunb.), Kinuyanagi (Salix kinuyanagi Kimura), Koryanagi (Salix koriyanagi Kimura;Salix purpurea var.japonica Nakai), Friso de willow (Salix leucopithecia Kimura), Unryu willow (Salix matsudana Koidz.), Takane willow (Rengei willow) (Salix nakamurana Koidz.), Black Willow (Salix nigra), Purple willow (Salix purpurea L.), Onoe willowSalix sachalinensis Fr. Schm.), Miyama willow (Mine willow) (Salix reinii Fr. et Sav.), Yamanagi (Salix sieboldiana Bl.)(Salix viminalis L.;Salix longifolia Lam.), Fox willowSalix vulpina), The willow genusToisusu urbaniana ;Salix urbaniana) Etc. are exemplified. Among these, in particular, the European porcupine (Populus tremula), European willow (Salix alba L.;Salix aurea Salisb.), Weeping willowSali x babylonica L.), black willow (Salix nigra), Purple willow (Salix purpurea It is preferable to use one or more plants selected from L.), andSalix nigra) Bark extract is most preferred. Willow family (Salicaceae) Although the site | part at the time of obtaining an extract from a plant is not specifically limited, A bark, a leaf, and a female flower are used preferably from the point of the antibacterial action.
[0009]
These willows (Salicaceae) As an extraction solvent for obtaining plant extracts, water, ethanol, methanol, isopropanol, isobutanol, n-hexanol, methyl amyl alcohol, 2-ethylbutanol, alcohols such as n-octyl alcohol, glycerin, ethylene glycol, Polyhydric alcohols such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, propylene glycol, propylene glycol monomethyl ether, propylene glycol monoethyl ether, triethylene glycol, 1,3-butylene glycol, hexylene glycol or derivatives thereof, acetone, Ketones such as methyl ethyl ketone, methyl isobutyl ketone and methyl-n-propyl ketone, esters such as ethyl acetate and isopropyl acetate, ethyl ether, iso One or more mixed solvents selected from polar solvents such as ethers such as propyl ether and n-butyl ether can be suitably used, and phosphate buffered saline can also be used. There is no limitation. For the purpose of the present invention, a polar solvent is preferable from the viewpoint of antibacterial activity, and further, one or more mixed solvents selected from methanol, ethanol, 1,3-butylene glycol and water, particularly water, are used. It is preferable to use a solvent.
[0010]
Extraction methods include extraction by soaking in a cooled or warm state at room temperature, extraction using a distillation method such as steam distillation, raw willows (Salicaceae) The pressing method etc. which squeeze from a plant and obtain an extract etc. are illustrated, These methods are extracted individually or in combination of 2 or more types.
[0011]
Willows during extraction (Salicaceae) The ratio of plant to solvent is not particularly limited, but willowaceae (Salicaceae) The solvent is preferably 0.5 to 1000 times by weight of the plant 1, particularly 0.5 to 100 times by weight in terms of extraction operation and efficiency. The extraction temperature is conveniently in the range from room temperature to the boiling point of the solvent under normal pressure, and the extraction time is preferably in the range of 2 hours to 2 weeks, although it varies depending on the extraction temperature.
[0012]
The willow family thus obtained (Salicaceae) The plant extract can be used as it is, but it can be purified by adding purification operations such as deodorization, decolorization and concentration within the range not losing the antibacterial action of the present invention, and further using column chromatography or the like. It may be used as a painting. These extracts, purified products, and fractions can be dried by removing the solvent from them, and can be provided in a form solubilized in a solvent such as alcohol, or in the form of an emulsion. it can.
[0013]
In the present invention, the willow family (Salicaceae) Anti-inflammatory agents used in combination with plant extracts include cortisone, hydrocortisone, prednisolone, methylprednisolone, dexamethasone, betamethasone, triamcinolone, triamcinolone acetonide, fluocinolone acetonide, fluocinonide, beclomethasone and their phosphates, propionic acid Steroidal anti-inflammatory agents such as salts, acetates and succinates, salicylic acid derivatives such as salicylic acid and aspirin, salicylamide, etenzamide, methyl salicylate, indoleacetic acid derivatives such as indomethacin, sulindac, phenylbutazone, oxyphenbutazone, etc. Pyrazolidinedione derivatives, anthranilic acid derivatives such as mefenamic acid and flufenamic acid, propionic acid derivatives such as ibuprofen, ketoprofen and naproxen, diclof Non-steroidal anti-inflammatory agents such as phenylacetic acid derivatives such as nac, fenbufen and bufexamac, benzothiazine derivatives such as piroxicam, salts and derivatives of glycyrrhizic acid such as dipotassium glycyrrhizinate and glycyrrhizinate, monoammonium glycyrrhizinate, glycyrrhetinic acid and stearyl glycyrrhetinate , Glycyrrhetinic acid salts such as glycyrrhetinyl stearate, disodium 3-succinyloxyglycyrrhetinic acid, and derivatives, azulene derivatives such as guaiazulene, ethyl guaiazulene sulfonate, sodium guaiazulene sulfonate, camazulene, allantoin, aloin, aloe emodin, shikonin and isobutyl shikonin , Acetyl shikonin, isovaleryl shikonin and other shikonin derivatives, ginsenoside R_a1, Ginsenoside R_a2, Ginsenoside R_b1Such as ginsenoside, and 20-glucoginsenoside R_fAnd geonsenoside derivatives such as peoniflorin, peonol, and peonol derivatives such as peonoside and peonolide.
[0014]
In the present invention, as an anti-inflammatory agent,Scutellariae Radix), Daylily (Glycyrrhizae Radix), Kujin (Sophorae Radix), Psycho (Bupleuri Radix), Peony (Paeoniae Radix), Shouma (Cimicifugae Rhizoma), Tissou (Zizyphi Fructus), Chimo (Anemarrhenae Rhizoma), Button pi (Moutan Cortex), Ryutan (Gentianae Scabrae Radix), Forsythia (Forsythiae Fructus), Etc., and herbal medicines used as anti-inflammatory agents or extracts thereof can also be used.
[0015]
For the external preparation for skin according to the present invention, one or more of these anti-inflammatory agents are selected and used.
[0016]
As the anti-inflammatory agent in the present invention, one or more selected from glycyrrhizic acid salts and derivatives, glycyrrhetinic acid salts and derivatives, and liquorice are preferably used because of their ease of incorporation into an external preparation for skin. From the viewpoint of the effect of improving skin roughness, it is preferable to use one or two selected from stearyl glycyrrhetinate and licorice extract.
[0017]
In the present invention, the willow family (Salicaceae) A plant extract and one or more anti-inflammatory agents are contained in a skin external preparation base. For the total amount of the topical skin preparation,SalicaceaeIt is appropriate that the plant extract is about 0.001 to 5.0% by weight. The anti-inflammatory agent varies depending on the type, but is appropriately about 0.0001 to 5.0% by weight.
[0018]
The external preparation for skin according to the present invention can be provided in various dosage forms such as lotions, emulsions, gels, creams, ointments, powders, granules and the like. Also, skin cosmetics such as lotion, milky lotion, cream, cosmetic liquid, packs, foundation cosmetics such as makeup base lotion and makeup base cream, foundations for each dosage form such as emulsion, oily, solid, etc. It can be provided as makeup cosmetics such as color and teak color, and body cosmetics such as hand cream, leg cream, neck cream and body lotion.
[0019]
In addition, the topical skin preparation according to the present invention includes a willow family (Salicaceae) In addition to plant extracts and anti-inflammatory agents, general pharmaceutical and cosmetic raw materials such as oil components, surfactants, moisturizers, pigments, UV absorbers, antioxidants, fragrances, antifungal agents, etc. In addition, physiologically active ingredients such as a skin cell activator and a whitening agent can be contained.
[0020]
【Example】
Further, the features of the present invention will be described in detail with reference to examples.
[0021]
First, the willow family (in the skin external preparation according to the present invention)Salicaceae) Preparation of plant extract is shown.
[0022]
[Black willow bark extract]
Black willows collected in spring (Salix nigra(2) 1000 g of purified water is added to a piece of 200 g of fresh bark, and extracted for 36 hours with stirring at 25 ° C. The obtained extract was filtered and concentrated under reduced pressure to obtain 150 g of black willow bark extract.
[0023]
[European porcupine leaf extract]
European Porcupine (Populus tremula) After adding 200 g of fresh leaves, add 1000 g of purified water and extract at 25 ° C. with stirring for 36 hours. The obtained extract was filtered and then concentrated under reduced pressure to obtain 120 g of a European porcupine leaf extract.
[0024]
[European willow bark extract]
Dried European willow (Salix alba L.;Salix aurea Salisb.) 50 g is ground, 1000 g of 50 vol% ethanol is added and extracted for 24 hours at room temperature. The obtained extract was filtered, concentrated under reduced pressure, and freeze-dried to obtain 5 g of a European willow bark extract.
[0025]
[Weeping willow leaf extract]
Fresh weeping willowSalix babylonica L.) Add 100 g of purified water to 10 g of shoots, and stir and extract with a mixer for 10 minutes. The obtained extract was filtered, concentrated under reduced pressure, and lyophilized to obtain 1.2 g of weeping willow leaf extract.
[0026]
Moreover, what was marketed as a pharmaceutical or cosmetics was used for the anti-inflammatory agent mix | blended in the following Example of this invention. The preparation of the anti-inflammatory crude drug extract is described below.
[0027]
[Ougon extract]
Ougon (Scutellariae Radix) 300 g was dried and pulverized, added to 0.5 liter of ethanol, left to stand at 20 ° C. for 10 days for extraction, and filtered to collect the filtrate. The filtrate was concentrated under reduced pressure and lyophilized to give the title extract.
[0028]
[Licorice extract]
Daylily (Glycyrrhizae Radix) 500 g was dried, ground and extracted in 1 liter of hot water for 2 hours. The filtrate was collected by filtration, then concentrated under reduced pressure and then lyophilized to obtain the title extract.
[0029]
[Cuzin extract]
Kujin (Sophorae Radix) 500 g was dried, pulverized, immersed in 1 liter of 50 vol% ethanol aqueous solution and extracted at 25 ° C. for 7 days. The filtrate was collected by filtration and used as the title extract.
[0030]
[Peonies extract]
Peonies (Paeoniae Radix) 550 g was dried, pulverized, immersed in 1 liter of 50 vol% ethanol aqueous solution, and extracted at 20 ° C. for 10 days with stirring. The filtrate was then collected by filtration, concentrated under reduced pressure, and lyophilized to give the title extract.
[0031]
[Tithus extract]
Taisou (Zizyphi Fructus) 600 g was dried, pulverized, immersed in 1 liter of 50 vol% ethanol aqueous solution and extracted at 25 ° C. for 7 days. The filtrate was collected by filtration and used as the title extract.
[0032]
[Button pi extract]
Button pin (Moutan Cortex) 520 g was dried, pulverized, immersed in 1 liter of ethanol, left to stand at 10 ° C. for 14 days, and extracted. The filtrate was collected by filtration and used as the title extract.
[0033]
[Ryutan extract]
Ryutan (Gentianae Scabrae Radix) 650 g was dried, ground and extracted in 1 liter of hot water for 4 hours. The filtrate was collected by filtration, concentrated under reduced pressure, and lyophilized to give the title extract.
[0034]
[Forsythia extract]
Forsythia (Forsythiae Fructus) 750 g was pulverized, immersed in 1.2 liters of 1,3-butylene glycol, and extracted for 10 days at 15 ° C. with stirring. The filtrate was collected by filtration and used as the title extract.
[0035]
Then, the prescription of the Example about the skin external preparation which concerns on this invention is shown.
[0036]
[Example 1] Lotion
(1) Ethanol 20.0 (% by weight)
(2) Polyoxyethylene (60E.O.) hydrogenated castor oil 1.0
(3) Black Willow Bark Extract 1.0
(4) Dipropylene glycol 5.0
(5) 1,3-butylene glycol 10.0
(6) Sodium guaiazulene sulfonate 0.2
(7) Methyl paraoxybenzoate 0.1
(8) Purified water 62.7
Manufacturing method: Add components (1) to (7) sequentially to (8) to dissolve and homogenize
[0037]
Example 2 Emulsion
(1) Cetanol 1.0 (% by weight)
(2) Beeswax 0.5
(3) Vaseline 2.0
(4) Squalane 6.0
(5) Dimethylpolysiloxane 2.0
(6) Polyoxyethylene (20E.O.) sorbitan 1.0
Monostearic acid ester
(7) Glyceryl monostearate ester 1.0
(8) Glycerin 4.0
(9) 1,3-butylene glycol 4.0
(10) Methyl paraoxybenzoate 0.1
(11) Purified water 62.6
(12) Carboxyvinyl polymer 10.0
(1.0 wt% aqueous solution)
(13) Potassium hydroxide (10.0 wt% aqueous solution) 1.0
(14) European porcupine leaf extract 0.5
(15) Allantoin 0.2
(16) Ethanol 5.0
Production method: The oil phase components (1) to (7) are mixed and dissolved by heating to 75 ° C. On the other hand, the water phase components (8) to (11) are mixed and dissolved to 75 ° C. After preliminarily emulsifying by adding the oil phase to this, (12) was added and uniformly emulsified with a homomixer, and then (13) was added to increase the viscosity, followed by cooling at 40 ° C. (14) Add ~ 16 and mix.
[0038]
Example 3 Emulsion
(1) Cetanol 1.0 (% by weight)
(2) Beeswax 0.5
(3) Vaseline 2.0
(4) Squalane 6.0
(5) Dimethylpolysiloxane 2.0
(6) Polyoxyethylene (20E.O.) sorbitan 1.0
Monostearic acid ester
(7) Glyceryl monostearate ester 1.0
(8) Stearyl glycyrrhetinate 0.2
(9) Glycerin 4.0
(10) 1,3-butylene glycol 4.0
(11) Methyl paraoxybenzoate 0.1
(12) Purified water 61.9
(13) Carboxyvinyl polymer 10.0
(1.0 wt% aqueous solution)
(14) Potassium hydroxide (10.0 wt% aqueous solution) 1.0
(15) Ethanol 5.0
(16) Ogon extract 0.2
(17) European willow bark extract 0.1
Production method: The oil phase components (1) to (8) are mixed and dissolved by heating to 75 ° C. On the other hand, the aqueous phase components (9) to (12) are mixed and dissolved to 75 ° C. After preliminarily emulsifying by adding the oil phase to this, (13) was added and uniformly emulsified with a homomixer, and then (14) was added to increase the viscosity, followed by cooling at 40 ° C. (15) Add ~ (17) and mix.
[0039]
[Example 4] Oil-in-water cream
(1) Beeswah 6.00 (wt%)
(2) Cetanol 5.00
(3) Reduced lanolin 8.00
(4) Squalane 27.50
(5) Stearyl glycyrrhetinate 0.05
(6) Glyceryl fatty acid ester 4.00
(7) Lipophilic glyceryl monostearate 2.00
(8) Polyoxyethylene (20E.O.) sorbitan 5.00
Monolaurate
(9) Stearyl glycyrrhetinate 0.25
(10) Propylene glycol 5.00
(11) Methyl paraoxybenzoate 0.10
(12) Purified water 36.80
(13) Weeping willow leaf extract 0.10
(14) Licorice extract 0.20
Production method: The oil phase components (1) to (9) are mixed and dissolved to 75 ° C. On the other hand, the aqueous phase components (10) to (12) are mixed and dissolved, and heated to 75 ° C. Next, the oil phase component is added to the water phase component and pre-emulsified, and then uniformly emulsified with a homomixer. After cooling, (13) and (14) are added and mixed at 40 ° C.
[0040]
[Example 5] Oil-in-water cream
(1) Beeswaw 6.0 (wt%)
(2) Cetanol 5.0
(3) Reduced lanolin 8.0
(4) Squalane 27.5
(5) Glyceryl fatty acid ester 4.0
(6) Lipophilic glyceryl monostearate 2.0
(7) Polyoxyethylene (20E.O.) sorbitan 5.0
Monolaurate
(8) Propylene glycol 5.0
(9) Methyl paraoxybenzoate 0.1
(10) Purified water 37.0
(11) Black willow bark extract 0.3
(12) Kujin extract 0.1
Production method: The oil phase components (1) to (7) are mixed and dissolved to 75 ° C. On the other hand, the water phase components (8) to (10) are mixed and dissolved, and heated to 75 ° C. Next, the oil phase component is added to the aqueous phase component and pre-emulsified, and then uniformly emulsified with a homomixer. After cooling, (11) and (12) are added and mixed at 40 ° C.
[0041]
[Example 6] Gel agent
(1) Dipropylene glycol 10.0 (% by weight)
(2) Carboxyvinyl polymer 0.5
(3) Methyl paraoxybenzoate 0.1
(4) European porcupine leaf extract 0.2
(5) Peonies extract 0.3
(6) Potassium hydroxide (10.0 wt% aqueous solution) 1.0
(7) Purified water 87.9
Production method: (1) to (5) are uniformly dissolved in (7), and then (6) is added to increase the viscosity.
[0042]
[Example 7] Oil-in-water emulsion type ointment
(1) White petrolatum 25.0 (% by weight)
(2) Stearyl alcohol 25.0
(3) Glycerin 12.0
(4) Sodium lauryl sulfate 1.0
(5) Methyl paraoxybenzoate 0.1
(6) Purified water 35.8
(7) European willow bark extract 0.1
(8) Button pi extract 1.0
Production method: The oil phase components (1) to (4) are mixed and heated to dissolve uniformly to 75 ° C. On the other hand, the aqueous phase components (5) to (6) are mixed and heated to 75 ° C. The oil phase component is gradually added to the aqueous phase component while stirring to emulsify, and after cooling, (7) and (8) are added and mixed at 40 ° C.
[0043]
[Example 8] Liposome agent
(1) Glycerin 2.0 (% by weight)
(2) 1,3-butylene glycol 3.0
(3) Polyoxyethylene (25E.O.) oleyl ether 0.2
(4) Ethanol 10.0
(5) Methyl paraoxybenzoate 0.1
(6) Purified water 79.7
(7) Black Willow Bark Extract, Daylily 5.0
Extract-encapsulated liposome
Production method: Dissolve (5) in (4), add to (6) together with (1) to (3), mix uniformly, add (7) to this and disperse. In addition, (7) black willow bark extract and licorice extract-encapsulating liposomes contain 50 vol% containing black willow bark extract 1.0 (w / v)% and licorice extract 2.0 (w / v)%. To 100 mL of an aqueous ethanol solution, 80 g of soybean lecithin was added and suspended at 55 ° C., followed by sonication to prepare liposomes, which were collected by centrifugation.
[0044]
[Example 9] Water-in-oil emollient cream
(1) Liquid paraffin 30.0 (wt%)
(2) Microcrystalline wax 2.0
(3) Vaseline 5.0
(4) Diglyceryl dioleate 5.0
(5) Sodium L-glutamate 1.6
(6) L-serine 0.4
(7) Propylene glycol 3.0
(8) Methyl paraoxybenzoate 0.1
(9) Weeping willow leaf extract 0.1
(10) Forsythia extract 1.5
(11) Purified water 51.2
(12) Fragrance 0.1
Production method: Dissolve (5) and (6) in a part of (11) to 50 ° C., and gradually add to (4) heated in advance to 50 ° C. with stirring. This is mixed in advance and uniformly dispersed in (1) to (3) heated and dissolved at 70 ° C. (7) to (10) are added to the remainder of (11), and the mixture heated to 70 ° C. is added with stirring and emulsified with a homomixer. After cooling, add and mix (12) at 40 ° C.
[0045]
[Example 10] Makeup base cream
(1) Stearic acid 12.00 (% by weight)
(2) Cetanol 2.00
(3) Glyceryl tri-2-ethylhexanoate 2.50
(4) Self-emulsifying glyceryl monostearic acid 2.00
ester
(5) Propylene glycol 10.00
(6) European porcupine leaf extract 0.02
(7) Methyl paraoxybenzoate 0.10
(8) Ryutan extract 0.05
(9) Potassium hydroxide 0.30
(10) Purified water 68.43
(11) Titanium oxide 2.00
(12) Bengala 0.40
(13) Yellow iron oxide 0.10
(14) Fragrance 0.10
Production method: The oil phase components (1) to (4) are mixed and dissolved to 75 ° C. On the other hand, the aqueous phase components (5) to (10) are mixed, dissolved by heating, and the pigment components (11) to (13) are added thereto and dispersed uniformly with a homomixer to 75 ° C. Next, the oil phase component is added to the water phase component, and the mixture is uniformly emulsified with a homomixer. After cooling, (14) is added and mixed at 40 ° C.
[0046]
[Example 11] Emulsion foundation
(1) Stearic acid 2.00 (wt%)
(2) Squalane 5.00
(3) Octyl dodecyl myristate 5.00
(4) Cetanol 1.00
(5) Decaglyceryl monoisopalmitate 9.00
(6) 1,3-Butylenecricol 6.00
(7) Methyl paraoxybenzoate 0.10
(8) Potassium hydroxide 0.08
(9) Purified water 52.47
(10) Titanium oxide 9.00
(11) Talc 7.40
(12) Bengala 0.50
(13) Yellow iron oxide 1.10.
(14) Black iron oxide 0.10
(15) European willow bark extract 0.10
(16) Isolate extract 1.00
(17) Fragrance 0.15
Production method: The oil phase components (1) to (5) are mixed and dissolved to 75 ° C. On the other hand, the aqueous phase components (6) to (9) are mixed, dissolved by heating, the pigment components (10) to (14) are added thereto, and the mixture is uniformly dispersed with a homomixer to 75 ° C. Next, the oil phase component is added to the aqueous phase component, and the mixture is uniformly emulsified with a homomixer. After cooling, (15) to (17) are added and mixed at 40 ° C.
[0047]
[Example 12] Hand cream
(1) Cetanol 4.00 (wt%)
(2) Vaseline 2.00
(3) Liquid paraffin 10.00
(4) Glyceryl monostearate 1.50
(5) Polyoxyethylene (60E.O.) glyceryl 2.50
Isostearic acid ester
(6) Tocopherol acetate 0.25
(7) Glycerin 20.00
(8) Methyl paraoxybenzoate 0.10
(9) Weeping willow leaf extract 0.10
(10) Dipotassium glycyrrhizinate 0.02
(11) Purified water 59.53
Production method: The oil phase components (1) to (6) are mixed and dissolved to 75 ° C. On the other hand, the aqueous phase components (7) to (11) are mixed and dissolved to 75 ° C. Next, the oil phase component is added to the aqueous phase component, and the mixture is uniformly emulsified with a homomixer and cooled.
[0048]
[Example 13] Pack
(1) Purified water 69.0 (% by weight)
(2) Polyvinyl alcohol 12.5
(3) Ethanol 10.0
(4) Glycerin 5.0
(5) Polyethylene glycol (average molecular weight 1540) 3.0
(6) Black willow bark extract 0.3
(7) Licorice extract 0.2
Production method: Components (2) to (7) are sequentially added to (1) to mix, dissolve and homogenize.
[0049]
[Example 14] Hair Nick
(1) Ethanol 50.0 (% by weight)
(2) Purified water 48.4
(3) Dipotassium glycyrrhizinate 0.1
(4) European porcupine leaf extract 1.5
Production method: Components (1) to (4) are mixed and dissolved uniformly.
[0050]
[Example 15] Hair shampoo
(1) Sodium alkyl ether sulfate 18.0 (% by weight)
(2) Palm oil fatty acid diethanolamide 2.0
(3) Propylene glycol 2.0
(4) European willow bark extract 0.1
(5) Allantoin 0.1
(6) Purified water 77.8
Production method: Components (1) to (5) are added to (6) sequentially to make uniform.
[0051]
[Example 16] Hair rinse
(1) Cetanol 3.0 (% by weight)
(2) Stearyltrimethylammonium chloride 0.7
(3) Glycerin 3.0
(4) N-cocoyl-L-arginine ethyl ester
-DL-pyrrolidonecarboxylate 0.1
(5) Allantoin 0.1
(6) Weeping willow leaf extract 0.3
(6) Purified water 92.8
Production method: Components (1) to (5) are sequentially added to (6) and mixed.
[0052]
[Example 17] Liquid body shampoo
(1) N-lauroyl-L-glutamic acid 20.0 (% by weight)
Triethanolamine (30.0 wt% aqueous solution)
(2) N-lauroylmethyl taurine sodium 10.0
(30.0 wt% aqueous solution)
(3) lauric acid triethanolamine 10.0
(4) Triethanolamine myristic acid 10.0
(5) Lauroi imidazolinium betaine 5.0
(6) Lauroyl diethanolamide 5.0
(7) Propylene glycol 7.0
(8) Black Willow Bark Extract 1.0
(9) Isolate extract 0.5
(10) Purified water 41.5
Production method: Components (1) to (9) are added to (10) sequentially and mixed.
[0053]
[Example 18] Facial cleansing foam
(1) Myristic acid 18.0 (wt%)
(2) Palmitic acid 3.0
(3) Stearic acid 7.0
(4) Mixed fatty acid triglyceride 0.1
(5) Stearyl glycyrrhetinate 0.1
(6) Self-emulsifying glyceryl monostearate 3.0
(7) Purified water 38.2
(8) Glycerin 17.0
(9) Potassium hydroxide 7.8
(10) Diglycerin 3.0
(11) 1,3-butylene glycol 1.0
(12) Disodium N-stearolyl-L-glutamate 1.0
(13) Methyl paraoxybenzoate 0.1
(14) Weeping willow leaf extract 0.1
(15) Stearyl glycyrrhetinate 0.1
(16) Licorice extract 0.5
Production method: The oil phase components (1) to (6) are mixed, heated and dissolved to 70 ° C. The aqueous phase components (7) to (16) are mixed, dissolved, and heated to 70 ° C. The oil phase is gradually added to the aqueous phase component to saponify it, and then cooled while mixing.
[0054]
Among the examples according to the present invention described above, Examples 1 to 8 were evaluated for the effect of suppressing wrinkle formation on the skin by medium wavelength ultraviolet rays (UVB). At that time, in Examples 1 to 8, each of the willows (Salicaceae) The plant extract and anti-inflammatory agent, or the black willow bark extract and the liquorice extract-encapsulating liposome were replaced as shown in Table 1 to be Comparative Examples 1 to 8 and evaluated at the same time. The evaluation was carried out on a back part of 0.2g each of Examples and Comparative Examples for each group of 5 hairless mice, 100 mJ / cm.²UVB was irradiated 3 times a week for 20 weeks, and the state of wrinkle formation in the hairless mouse skin was observed and scored according to the criteria shown in Table 2 for evaluation. At this time, a group to which only purified water was applied was used as a control. As a result, the average value of each group was calculated and shown in Table 3 according to the relationship with the number of days of UVB irradiation.
[0055]
[Table 1]

[0056]
[Table 2]

[0057]
[Table 3]

[0058]
As is clear from Table 3, in the control, when the UVB irradiation days exceeded 10 weeks, the depth of wrinkles formed in the skin reached a medium level, and after 20 weeks, formation of deep wrinkles was observed. It was. As an active ingredient, willow family (Salicaceae) In Comparative Example 1 and Comparative Example 6 application group containing only plant extract, wrinkle formation was well suppressed to the extent that slight wrinkle formation was observed after 20 weeks, and also contained anti-inflammatory agent And willow family (Salicaceae) In other comparative example application groups containing no plant extract, the inhibitory effect on wrinkle formation was recognized as compared with the control, but in each of the corresponding example application groups, formation of fine wrinkles after 20 weeks. As compared with the corresponding comparative application groups, the effect of suppressing wrinkle formation was significantly improved.
[0059]
Then, the use test was done about Example 1-Example 13 of this invention, and the improvement effect of the skin aging symptom was evaluated. At that time, in the examples 9 to 13, the willow family (Salicaceae) The plant extract and the anti-inflammatory agent were substituted as shown in Table 4 to give Comparative Examples 9 to 13, which were used in the usage test together with the above Comparative Examples 1 to 8.
[0060]
[Table 4]

[0061]
The effect of improving skin aging symptoms is that 20 female panelists in their 40's to 60's in which fine wrinkle formation and skin elasticity are remarkably observed are defined as one group, and each of the examples and comparative examples is blinded in each group. And used continuously twice a day for 2 months. The degree of fine lines is evaluated by visual observation and photography, and the skin elasticity is measured by a cut meter, and the state before and after the use test is started and compared, and "improvement", "slight improvement", "change" It was evaluated in three stages, “none”. The results are shown in Table 5 as the number of panelists that obtained each evaluation.
[0062]
[Table 5]

[0063]
As is apparent from Table 5, an anti-inflammatory agent is contained as an active ingredient, but the willow family (Salicaceae) In each use group of Comparative Example 2 to Comparative Example 5, Comparative Example 7, Comparative Example 8 and Comparative Example 10 to Comparative Example 12 containing no plant extract, fine wrinkles and an improvement tendency of skin elasticity were observed, but clearly There were not so many panelists who recognized the improvement. Willow family (Salicaceae) In each of the use groups of Comparative Example 1, Comparative Example 6, Comparative Example 9, and Comparative Example 13 containing only plant extract, fairly good wrinkles and a tendency to improve skin elasticity were observed. In the case use group, the number of panelists who showed a clear improvement was significantly greater than in the corresponding comparative example use group.
[0064]
Moreover, the improvement effect of the rough skin symptom was evaluated about Example 1- Example 13 and Comparative Example 1- Comparative Example 13 of this invention. The improvement effect of rough skin symptoms is a group of 20 female panelists in their 20s to 60s who show remarkable rough skin symptoms, and each of the examples and comparative examples is blinded twice a day. Evaluated by using continuously for months. The skin condition before and after the start of the use test was evaluated and scored according to the evaluation criteria shown in Table 6, and the average value of 20 people was calculated and shown in Table 7.
[0065]
[Table 6]

[0066]
[Table 7]

[0067]
As is clear from Table 7, in the examples using groups of the present invention, remarkable improvement in rough skin was observed in all cases, and after completion of the use test, the skin condition was improved from almost good to good. . On the other hand, in the comparative example use group, a considerably good improvement in rough skin was observed, but the degree was smaller than the corresponding example use group.
[0068]
In Examples 1 to 13, no change in state was observed when stored at 25 ° C. for 6 months, and skin irritation was problematic even in a 48-hour back obstruction patch test by 30 male panelists. Sexual reaction was not observed.
[0069]
【The invention's effect】
As described above in detail, according to the present invention, it was possible to obtain an external preparation for skin that has excellent stability and safety, and has synergistically improved effects of preventing and improving rough skin and aging of the skin.

Claims (4)

Salicaceae plant extract, oriental extract, licorice extract, cucumber extract, peonies extract, lysium extract, button pi extract, ryutan extract, forsythia extract, sodium guaiazulenesulfonate, allantoin, glycyrrhetin A skin external preparation characterized by containing one or more selected from acid stearyl and dipotassium glycyrrhizinate . Salicaceae (Salicaceae) extracts of plants is a water extract of Salicaceae (Salicaceae) plants, skin external preparation according to claim 1. Salicaceae (Salicaceae) extracts of plants is an extract from the bark of Salicaceae (Salicaceae) plants, skin external preparation according to claim 1 or claim 2. The skin external preparation according to one of claims 1 to 3, wherein the extract of the Salicaceae plant is an extract of Salix nigra L ..