JPH03161412A - Skin cosmetic - Google Patents

Abstract

PURPOSE:To obtain a cosmetic, containing vitamin E and an extract prepared from a flower or leaf of melilot herb and capable of densifying the keratinous layer structure of the skin and enhancing the water holding function thereof. CONSTITUTION:A skin cosmetic containing 0.005-2.0wt.% at least one of vitamin E and esters thereof and 0.005-2.0wt.%, especially 0.01-1.0wt.% extract prepared by extracting a flower or leaf of melilot herb with water or a hydrous alcohol. The aforementioned cosmetic has skin beautifying effects as follows promoting turnover of the keratinous layers, improving the dry skin or keeping the skin in a healthy state, preventing aging thereof and imparting moistness, softness and resilience to the skin.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a skin cosmetic that densifies the stratum corneum structure of the skin and enhances its moisture retention function. (Prior art) Aging skin is dry, rough skin that lacks smoothness, shows peeling of corneocytes, has a high collagen/elastin ratio in connective tissue, and has many wrinkles. In aging skin, the turnover of the stratum corneum is slow due to a decline in cell metabolic function, so when anti-aging effects are imparted to the skin, turnover is said to become faster.Contains various skin cell activating ingredients and blood circulation promoting ingredients. Cosmetics have been proposed. However, skin cosmetics containing these precepts alone have not been able to sufficiently prevent skin aging. (Disclosure of the invention) The skin serves to protect an individual from the external environment. In other words, it plays a role in preventing the invasion of foreign substances and preventing loss of body fluids. Moisture in the skin decreases as it moves from the dermis to the basal cell layer of the epidermis and then to the stratum corneum. evaporates to the outside through the This water transpiration is mainly caused by the angle 'iIl! However, in dry skin that is normally seen or dry skin that is seen in aging skin, it is recognized that the skin's moisture retention function is reduced. ．． This is because the dry skin is in a state beyond the normal control limit of the protective function of the stratum corneum, or because the protective function is weakened. Therefore, it is possible to densify the structure of the stratum corneum and the stratum corneum and prevent it. 2] If the la function can be activated, the moisture retention function of the skin will be enhanced, the skin will be maintained in a healthy state, and dry skin can be improved or repaired. Furthermore, it can be said to have an anti-aging effect on the skin if it enhances the decreased cell metabolic function of aging skin and accelerates the turnover of the stratum corneum. As a result of intensive research, the present inventors have found that extracts obtained from the flowers or leaves of Melilot grass have excellent skin revitalizing effects. Furthermore, when a cosmetic containing vitamin E and at least one of its esters and the present extract is applied to the skin, it densifies the stratum corneum structure, enhances the moisture retention function, and promotes turnover of the stratum corneum. This book has been found to have a beautifying effect that improves dry skin, maintains the skin in a healthy state and prevents aging, and gives the skin moisture (moist feeling), flexibility (smooth feeling), and elasticity. The invention was perfected. (Object of the Invention) An object of the present invention is to provide a skin cosmetic that is excellent in skin aging prevention effects such as rough skin improvement effects and keratin improvement effects, and skin beautification effects. (Means for Solving the Problems) The present invention relates to a skin cosmetic containing at least one of vitamin E and its esters and an extract obtained from the flowers or leaves of Melilot grass. The flowers and leaves of Melilot grass used in the present invention are known substances and have been used as antitussives and fragrances since ancient times. The extract can be obtained by a well-known extraction method, such as by extracting dried melilot flowers. After washing the leaves with water,
It is crushed, boiled or cooled with 5 to 10 times its weight of water or water-containing alcohol (usually ethyl alcohol concentration 10% or less), then separated, the resulting extract is concentrated, and further water or alcohol is crushed. The desired extract can be obtained by removing it under reduced pressure and drying it. In addition, the above extract with water or hydroalcohol,
The extracted material is further treated with a porous polystyrene resin adsorbent (for example, Diaion HP, Mitsubishi Kakai Kogyo FTL'IJ), and the adsorbed material is eluted with alcohol or hydrous alcohol (ethyl alcohol concentration of about 50% or more). The extract applicable to the present invention can be obtained by drying the liquid. The extract thus obtained was pale greenish-yellow in color, aromatic, and had good properties in terms of storage stability and skin irritation. The content of the above-mentioned extract used in the present invention is preferably o. o o s
~2. O weight% (hereinafter abbreviated as wt%) is more preferably 0.01 to 1, Q wt%. 0. 0
If it is less than 0 5 w L%, the effect is not sufficient, and 'l
, Q w t%, no effect commensurate with the increased amount can be expected. Vitamin E and ester compounds used in the present invention are known substances, such as vitamin E, vitamin E acetate, vitamin E nicotinate, vitamin E succinate. Examples include vitamin E linoleate and vitamin E orotate. Vitamin E is α-tocopherol, β
Refers to monotocopherol, r-}copherol, δ-tocopherol, etc., or a mixture thereof. Any of these vitamin E ester compounds can be applied to the skin cosmetic composition of the present invention, and may be incorporated into the skin cosmetic composition either alone or as a combination of two or more thereof. In the present invention, the content of vitamin E and its ester compound is preferably 0. 0 0 5 w L%~2.
Q w t%. If it is less than 0.005 wt%, the effect is insufficient <2. Even if the amount exceeds Ow't%, no effect commensurate with the increased dose can be expected. The skin cosmetics of the present invention include, for example, creams. It can be applied to milky lotions, lotions, packs, etc.・In addition to the above, the skin cosmetics of the present invention also contain pigments, fragrances,
Preservatives, surfactants. Pigment. Antioxidants and the like may be added as appropriate within the range that achieves the purpose of the present invention. In addition, rough skin improvement effect test, keratin improvement effect test, used to evaluate the skin aging prevention effect of the skin cosmetics of the present invention,
The test method for the skin beautification effect test (practical test) is as follows. (1) Effect test on improving rough skin The effect of continuous application for 4 weeks was investigated on 20 middle-aged and elderly subjects with rough skin on their lower legs. Approximately 1 g of the sample was applied to the left lower vJ test site of the subject, and the condition of the skin before and after the test was visually evaluated according to the following criteria. No sample was applied to the right lower leg, which served as a control. Judgment criteria for skin dryness + + + +++: Normal: slight dryness, no scaling: dryness, mild scaling: dryness, scaling Moderate: marked dryness, scaling If the dryness improved by two or more steps (for example, 11-, 111±), it was considered valid, if it improved by one step, it was considered somewhat effective, and if there was no change, it was considered invalid. The test results are shown as the number of subjects who found the test to be effective or somewhat effective. (2) Stratum corneum improvement effect test Scotch tape (Nichiban Mending Tape) was adhered to the subject's skin before and after the above-mentioned rough skin improvement effect test was started. ? The state of the corneocytes attached to the 41#L tape was examined in detail using a scanning electron microscope, and the anti-removal properties of skin corneocytes were analyzed according to the following criteria. ) was sought.

Judgment criteria for the effect of improving the stratum corneum Evaluation score 1: No scale observed 2: Small scale scattered 3: Small to medium scale noticeable 4: Large scale noticeable evaluation is the evaluation score of the test site after 4 weeks of continuous application and the control site Valid if the difference from that of is 2 points or more, 1
The case of 0 points was considered to be somewhat effective, and the case of 0 points was considered invalid. The test results are shown as the number of subjects out of 20 who were found to be effective or somewhat effective. (3) Skin beautification effect test (practical test) Female subjects (35-5
The effects were evaluated after 3 months of continuous Vt administration twice a day (morning and evening) to 20 children (5 years old). The test results showed that the skin was moisturized in terms of skin wettability, smoothness, and elasticity.
, "My skin became smooth""My skin became taut"
It is shown by the number of people who answered. Example 1 [Two-layered lotion] A two-layered U-lotion was prepared by blending the melilot flower and leaf extracts prepared as described below as shown in the composition. (Preparation of melilot grass extract) After washing 500 g of dried melilot grass flowers with water and pulverizing them, 4000 ml of water was added, boiled for about 3 hours, and separated to obtain a crude extract. Then, elute with this alcohol (ethanol 9Qwt%) and remove the solvent to obtain #5)
2 l. of powdered dry extract. I got 6g. Using the same method as above, extract from leaves of melilot grass (1) Kumikai (2) Preparation method Stir and disperse, then fill in containers. When using, shake and disperse the contents evenly. (3) Characteristics The characteristics are shown in Table 1. No.! As is clear from the table, the properties of the two-layer skin cosmetic of the present invention were excellent. Examples 2-4. Comparative Examples 1 to 4 [Skin Cream] In the same manner as in Example 1, each skin cream was prepared and various tests were conducted according to the following conditions. It manufacturing method After uniformly dissolving the ingredients (B) in (A),
Heat to fyJ °C. On the other hand, (C) Kaibun is aged and melted at 80°C, and then (C) Kaibun is poured into (A) and stirred and mixed. Next, the mixture is cooled to a temperature of 30° C. while stirring.

(3) Characteristics The results of various tests conducted on each skin cream are listed in the right column of Table 1. As can be seen from this table, compared to the skin cream of Comparative Example 1 containing only the extract, the skin cosmetics of Examples 2 to 4 containing melilot grass extracts performed better in all the tests. showed good results.

Furthermore, the skin cream of Comparative Example 2-4 containing only vitamin E or its esters was inferior in various properties. (Effects of the Invention) As described above, it is clear that the skin cosmetic of the present invention maintains or repairs the skin in a healthy state and provides an excellent skin cosmetic that has a beautifying effect. ．．

Claims (1)

[Claims] At least one of vitamin E and its esters;
Melilotus officina
A skin cosmetic product characterized by containing an extract obtained from flowers or leaves of S. lis.