JP2986565B2 - Cosmetics - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cosmetic product having a whitening effect and an excellent skin roughness preventing effect.

[0002]

2. Description of the Related Art Lotus has a scientific name of Nelumbo nucifera Geart.
n. (Nelumbium spciosum Willd), a very common plant that is widely cultivated because its rhizomes are edible as lotus roots. Except for the rhizome, the seeds are edible, and only the flowers are used for appreciation.
As a herbal medicine, it has the effects of diuresis, antipyretic, antidiarrheal, Ikutsu, etc. under the name of a leaf, but it is currently used only for a part. In addition, it has been known that the leaf has an action of suppressing Salmonella typhi and Shigella, but is not used as a cosmetic at all.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to consider the fact that some synthetic products have harmful side effects or sensitization to the human body, and are considered to be safe products of natural products. It is an object of the present invention to search for cosmetics that are easily available and have a skin whitening effect and other effectiveness on the skin, and to provide cosmetics containing the cosmetics.

[0004]

In order to solve the above-mentioned problems, the present inventor has searched for natural products which are easily available and secure to some extent, and which are effective and safe. As a result of researching various materials that meet this condition, lotus leaves produce lotus roots, so there is a lot of production and it is easy to secure raw materials. It turned out that there was no problem with safety.

Therefore, as a result of studying the effectiveness of lotus leaves as a cosmetic material, it was confirmed that the production of melanin was suppressed and that it was effective for whitening. Based on this finding, the present invention was completed. That is, the present invention is a cosmetic containing a lotus leaf extract.

The method of extracting the active ingredient from the lotus leaf includes a water-soluble organic solvent such as ethanol, methanol, butanol, and acetone. Water is added to this as needed, and the proportion varies depending on the type of the water-soluble organic solvent, but is suitably in the range of 0 to 80%. The blending amount in the cosmetic is preferably from 0.01 to 5% by weight as an extract and dried product.
2% by weight is preferred.

Further, other oils to be blended as cosmetics,
There are no restrictions on surfactants and drugs, and there is no problem in combination with other crude drugs if necessary.

[0008]

[Production Example] 5 g of dried lotus leaf was added to 50% ethanol 10
The mixture was stirred and extracted with 0 ml for 24 hours. Thereafter, this was freeze-dried and dissolved in 10 ml of 50% ethanol. Hereinafter, the present invention will be described more specifically with reference to Examples, but the present invention is not limited to these Examples.

(Example 1) lotion of lotion lotus leaf extract of production example 10.0 glycerin 10.0 ethanol 5.0 purified water 75.0

(Example 2) Cream parts by weight Squalane 25.0 Macadamia oil 5.0 Stearyl alcohol 3.0 Glycerin monostearate 2.0 Polyoxyethylene (60E.O.) hydrogenated castor oil 1.0 Purified water 53 1.0 1,3 butylene glycol 7.0 Lotus leaf extract of Production Example 10.0

Comparative Example 1 = Excluding the lotus leaf extract of Example 1 from Example 1.

Comparative Example 2 = Excluding the lotus leaf extract of Production Example from Example 2.

Tyrosinase activity inhibition (Test method) Mcllvaln buffer 0.9 ml, 1.66 mM Tyrosin
e 1.0 ml of the solution and 1.0 ml of the sample solution were placed in a screw vial and heated in a constant temperature water bath at 37 ° C. for 5 minutes or more. Tyrosinase solution (Sigma, from mushrooms, 9
(14 units / ml), and the mixture was kept warm in a constant temperature water bath at 37 ° C., and the absorbance was measured at 475 nm after 10 minutes. As a control, pure water was added instead of the sample solution, and the measurement was performed in the same manner.

(Calculation formula) Tyrosinase activity inhibition rate (%) = {B- (AP)} / B × 100 where A: absorbance of sample specimen B: absorbance of control P: absorbance of sample specimen by coloring (3 Double dilution)

When conducting the experiment, the experiment was carried out with the exception that ethanol was removed and water was added accordingly. Result Production Example 87% Example 1 64%

(Usage Test) Twenty women were divided into two groups, one group divided into two faces, and the other group used Example 1 and Comparative Example 1, and another group used Example 2 and Comparative Example 2 for 3 months. The effect, the rough skin, were compared.

(Evaluation Criteria) Evaluation The example is much better than the comparative example 4 The example is better than the comparative example 3 The example is slightly better than the comparative example 2 Example is slightly better than Comparative Example 1 There is no difference between Comparative Example and Example 0 Comparative Example is slightly better than Example -1 Comparative Example compared to Example Is slightly better -2 The comparative example is better than the example -3 The comparative example is much better than the example -4

(Whitening effect)

[Table 1] In addition, there was no evaluation of -2-4.

[Skin]

[Table 2] In addition, there was no evaluation of -3 to -4.

[0020]

As is clear from the examples and comparative examples,
The cosmetic containing the extract of lotus leaf of the present invention is excellent in skin whitening action and skin roughness prevention action, and is safe to use as a cosmetic because of its track record of being used as a Chinese herbal medicine for internal use. And it is easy to obtain raw materials, which is an excellent cosmetic.

Claims (1)

(57) [Claims] 1. A cosmetic comprising a lotus leaf extract.