JP2001302451A - Low-irritating cleansing cosmetics - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide low-irritating cleansing cosmetics capable of avoiding a stretching feeling after washing the face, giving low irritation to the skin when and after applied, especially giving low irritation to the eye, and therefore excellent in safety. SOLUTION: The low-irritating cleansing cosmetics contain (A) lecithin, (B) polyoxyethylene polyoxypropylene glycol, and (C) a liquid oil.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a hypoallergenic cleansing cosmetic. More specifically, the present invention relates to a low-irritant cleansing cosmetic which prevents a feeling of tension after washing a face, has low skin irritation during and after use, and particularly has excellent safety with low eye irritation.

[0002]

2. Description of the Related Art Conventionally, cleansing cosmetics for removing dirt, foundation and makeup cosmetics on the skin include oily, oil-in-water or water-in-oil emulsion creams and emulsions as wiping types.
In addition, as a washing type, cosmetics such as gelling of a surfactant-in-oil type emulsion, cleansing and massage using a liquid crystal structure composed of a hydrophilic nonionic surfactant (Japanese Patent Publication No. 1-53845), amphoteric surfactant And a cleansing composition (JP-A-6-16524).

[0003]

In these types of wipes of cosmetics, although dirt quickly solutes, the operation of wiping may cause damage to the skin. There was a problem with the cleansing charge itself, leaving it in the pores. Further, although the rinse-out type has excellent cleansing power, it has a strong feeling of tightness for people with sensitive skin, and is unfavorable because it causes skin irritation during and after use. 2. Description of the Related Art In recent years, foundations and make-up cosmetics are not only beautifully dressed, but also have a strong support from consumers for their ability to adhere to the skin without causing makeup loss due to sweat or sebum.
That is, from the viewpoint of the cleansing cosmetics, the foundation and makeup cosmetics are very difficult to remove, and a strong cleansing power for removing the cosmetics is required. The purpose of cleansing cosmetics is to remove airy foundations, makeup cosmetics, and dirt on the skin.However, while pursuing strong cleansing power, those that are insufficient from the viewpoint of tenderness to the skin are not sufficient. there were.

[0004] Therefore, the present invention solves the problems of the conventional cleansing cosmetics, has good elongation at the time of application to the skin, and does not impart resistance to the skin. Make-up cosmetics are easily lifted up, have excellent cleansing power, and can be used while protecting the keratin without dissolving the sebum more than necessary. An object of the present invention is to obtain a low-irritant cleansing cosmetic which has low skin irritation and excellent safety.

[0005]

As a result of intensive studies to achieve the above object, the present inventors have found that cleansing cosmetics containing lecithin, polyoxyethylene polyoxypropylene glycol, and liquid oil can be used as foundation and makeup cosmetics. After cleansing ingredients and skin stains, it prevents tactile sensation, found that it has low irritation during use and after use, and has particularly low hypoallergenicity with low eye irritation. The invention has been completed.

That is, (A) lecithin, (B) polyoxyethylene polyoxypropylene glycol,
(C) A hypoallergenic cleansing cosmetic characterized by being blended with a liquid oil. This will be described in detail below.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The lecithin (A) used in the present invention includes, for example, phosphatidylcholine, phosphatidylethanolamine, sphingomyelin, lysophosphatidylcholine, phosphatidylinositol, naturally occurring lecithin such as soybean and egg yolk, or a hydrogenated product thereof. And the like. These are used alone or in combination of two or more. Among them, hydrogenated soybean lecithin and hydrogenated egg yolk lecithin are particularly preferable.

The amount of lecithin used in the present invention is
Preferably it is 0.1 to 2.5% by weight, more preferably 0.5 to 1.5% by weight. If the amount is less than 0.1% by weight, a sufficient irritation-relieving effect cannot be obtained, while 2.
If the content is more than 5% by weight, the odor or coloring of lecithin itself is caused. In particular, the stress due to the odor increases, the feeling of use is inferior, and the stimulating effect is reduced.

The polyoxyethylene polyoxypropylene glycol (B) used in the present invention is a nonionic surfactant having polypropylene glycol as a hydrophobic group and imparting hydrophilicity by adding ethylene oxide, and having a molecular weight of 2
900 to 15500, for example, polyoxyethylene (26) polyoxypropylene glycol (3
0), polyoxyethylene (30) polyoxypropylene glycol (35), polyoxyethylene (30) polyoxypropylene glycol (55), polyoxyethylene (35) polyoxypropylene glycol (4)
0), polyoxyethylene (50) polyoxypropylene glycol (40), polyoxyethylene (200)
And polyoxypropylene glycol (70). One or two or more of these can be used in combination. Among them, polyoxyethylene (30)
Polyoxypropylene glycol (55), polyoxyethylene (35) polyoxypropylene glycol (4
0), one or more selected from polyoxyethylene (200) and polyoxypropylene glycol (70).

The blending amount of polyoxyethylene polyoxypropylene glycol is preferably 0.5 to 5% by weight, and more preferably 1.0 to 3.5% by weight. If the amount is less than 0.5% by weight, the washing property and the water-washing property become insufficient, so that the effect as a cleansing agent cannot be exhibited. If the amount exceeds 5% by weight, a feeling of tightness after use may undesirably occur.

The liquid oil used in the present invention includes silicone oils such as dialkyl carbonate, isocetyl octoate, neopentyl glycol dicaprate, isocetyl isostearate, dimethylpolysiloxane, methylhydrogenpolysiloxane and methylphenylpolysiloxane.
One or more selected from natural animal and vegetable oils such as olive oil and jojoba oil, and hydrocarbons such as liquid paraffin and squalane. Of these, particularly preferred are dialkyl carbonate, isocetyl octoate, and neopentyl glycol dicaprate.

The compounding amount of the liquid oil used in the present invention is preferably 65 to 82% by weight, more preferably,
70 to 80% by weight. 65% by weight of liquid oil
When the amount is less than 80%, the feeling of application becomes heavy and a burden is imposed on the skin, which is not preferable. When the amount is more than 82% by weight, the stability over time is inferior.

In the present invention, in addition to the above essential components,
Commonly used cosmetics, pharmaceuticals, and quasi-drug components can be appropriately compounded within a range that does not impair the effects of the present invention. For example,
Purified water, concentrated glycerin, diglycerin, 1,3-butylene glycol, humectants such as propylene glycol, dipropylene glycol, maltitol, sorbitol, polyglycerin fatty acid esters such as decaglyceryl monomyristate and decaglyceryl monostearate , Copper chlorophyllin sodium, copper chlorophyll, vitamin A and derivatives, vitamin B, ascorbyl phosphate (salt), vitamin E, vitamin D, ceramide, fermented ceramide, yeast extract, allantoin, dextrin, glycyrrhizinate (salt) ), Glycyrrhetinic acid and its derivatives, placenta extract, ogre, comfrey, linden, buttons, chamomile, gentian, etc., natural extracts extracted with water, water-soluble polymers, silicic acid anhydride, benga , Yellow iron oxide, black iron oxide, organic pigments lithium cobalt titanate, lavender, essential oil such as chamomile, perfumes, antioxidants, antimicrobial preservatives,
A sequestering agent or the like can be appropriately compounded.

[0014]

EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the technical scope of the present invention is not limited to these examples. In addition, the unit of the compounding amount in the following examples is weight% with respect to the total amount.
It is.

Example 1 and Comparative Example 1 Hypoallergenic cleansing cosmetics were prepared according to the formulations shown in Table 1 below and the methods described below, and the feeling of use was evaluated by the methods described below. Table 2 shows the results.

(1) Production method Production method of Example 1 Polyglyceryl monostearate, polyoxyethylene (30) polyoxypropylene glycol (55), polyoxyethylene (35) polyoxypropylene glycol (40), polyoxyethylene (200) ) Polyoxypropylene glycol (70), hydroxylated soybean phospholipid, concentrated glycerin and dipropylene glycol were sequentially added and dissolved by heating at 70 ° C to prepare a surfactant phase. Further, liquid paraffin, neopentyl glycol dicaprate, isocetyl octoate, dialkyl carbonate, and natural vitamin E were sequentially added and dissolved by heating to 70 ° C. to prepare an oil phase. Add oil phase to surfactant phase and homogenize 5
The mixture is cooled to 0 ° C., and a solution obtained by uniformly dissolving dipotassium glycyrrhizinate and sodium copper chlorophyllin in purified water is added. Further, copper chlorophyll and lavender oil were added, followed by stirring and cooling to obtain a hypoallergenic cleansing cosmetic of the present invention.

Production method of Comparative Example 1 Polyglyceryl monostearate, polyoxyethylene (30) polyoxypropylene glycol (55), polyoxyethylene (35) polyoxypropylene glycol (40), polyoxyethylene (200) polyoxypropylene Glycol (70), concentrated glycerin and dipropylene glycol were sequentially added and dissolved by heating at 70 ° C. to prepare a surfactant phase. Also, liquid paraffin, neopentyl glycol dicaprate, dialkyl carbonate,
Natural vitamin E was sequentially added and dissolved by heating to 70 ° C. to prepare an oil phase. The oil phase is added to a surfactant, homogenized, cooled to 50 ° C., and a solution obtained by uniformly dissolving dipotassium glycyrrhizinate and sodium copper chlorophyllin in purified water is added. Further, copper chlorophyll and lavender oil were added, followed by stirring and cooling to obtain a cleansing cosmetic composition of Comparative Example 1.

(2) Evaluation Method and Evaluation Criteria A sample of each of Examples and Comparative Examples was used twice a day for 4 weeks in the morning and at night by 25 female panels who are likely to have rough skin to obtain a feeling of use and cleansing ability. Tightness after washing your face,
Skin irritation during and after cleansing and eye irritation during and after cleansing were compared.

It was judged that each of the items of use and cleansing power, tightness after cleansing, skin irritation during and after cleansing, and eye irritation during and after cleansing was good among n = 25. Evaluation was made according to the following evaluation criteria according to the number of people. Evaluation criteria of feeling of use and cleansing power ：: At least 20 out of 25 persons have good feeling of use and evaluated as having high cleansing power. Δ: At least 10 out of 25 persons have good feeling of use and less than 20 persons have good feeling of cleansing. Evaluation ×: Less than 10 out of 25 people felt good in use and evaluated as having high cleansing power. Evaluation criteria for feeling of tightness after face washing ○: Evaluated when not more than 20 out of 25 people were unsatisfied △: 10 or more out of 25 people Evaluated when less than 20 people did not stick. ×: Evaluated when less than 10 people were not stuck. Evaluation criteria for skin irritation during and after cleansing. 10 to less than 20 out of 25 evaluated that there was no skin irritation ×: Less than 10 out of 25 evaluated that there was no skin irritation Evaluation criteria of eye irritation during and after cleansing ○: Out of 25 20 or more evaluated that there was no eye irritation △: 10 or more and less than 20 out of 25 evaluated that there was no eye irritation ×: Less than 10 out of 25 evaluated that there was no eye irritation

[0020]

[Table 1]

[0021]

[Table 2]

As can be seen from the results in Table 2, the hypoallergenic cleansing cosmetic composition of Example 1 according to the present invention was compared with Comparative Example 1
Compared with, it was confirmed that the usability was reduced with less feeling of tightness, skin irritation and eye irritation.

Examples 2-3, Comparative Examples 2-3 Preparations having the compositions shown in Table 3 were prepared, and their use feeling and cleansing power, tightness after face washing, skin irritation during and after cleansing, and during cleansing And eye irritation after cleansing was evaluated. The evaluation method is the same as that of the first embodiment. Table 3 also shows the evaluation results. The preparation method of each preparation was manufactured according to the manufacturing method of Example 1.

[0024]

[Table 3]

From the above results, the hypoallergenic cleansing cosmetic containing 0.1 to 2.5% by weight of the hydroxylated soybean phospholipid has usability with reduced feeling of tightness, skin irritation and eye irritation. You can see that. On the other hand, it is understood that when the blending amount of the hydroxylated soybean phospholipid is small as in Comparative Example 2, the stimulus relaxation effect is low. Further, when the amount of the hydroxylated soybean phospholipid was too large as in Comparative Example 3, stress due to the smell of the hydrogenated soybean phospholipid was increased, and the evaluation of usability and irritation was further inferior to Comparative Example 2.

Example 4, Comparative Examples 4 to 6 Formulations having the compositions shown in Table 4 were prepared and their use feeling and cleansing power, tightness after face washing, skin irritation during and after cleansing, and during and after cleansing The subsequent eye irritation was evaluated. The evaluation method is the same as that of the first embodiment. The evaluation results are also shown in Table 4. The preparation method of each preparation was manufactured according to the manufacturing method of Example 1.

[0027]

[Table 4]

As is clear from the results in Table 4, Example 4
It can be seen that in the case of, a feeling of tightness after washing the face was prevented, and a very good cosmetic having low skin irritation and eye irritation during and after use was obtained. On the other hand, as in Comparative Example 4 and Comparative Example 6, polyoxyethylene polyoxypropylene glycol was not blended, or if too small, the elongation during application / massage and the familiarity with makeup cosmetics were poor. It is hard to remove dirt and resistance to the skin, and the irritation evaluation during and after use is extremely poor. Also, as in Comparative Example 5, even when the blending amount of polyoxyethylene polyoxypropylene glycol is too large, the evaluation of tightness, skin irritation, and eye irritation after face washing is extremely poor.

Examples 5 to 7, Comparative Examples 7 to 10 Preparations having the compositions shown in Tables 5 and 6 were prepared, and their use feeling and cleansing power, tightness after cleansing, skin irritation during and after cleansing, Eye irritation during and after cleansing was evaluated. The evaluation method is the same as that of the first embodiment. Table 5 shows the evaluation results.
To 6 The preparation method of each preparation is described in Example 1.
It was manufactured according to the manufacturing method.

[0030]

[Table 5]

[0031]

[Table 6]

As is evident from the evaluation results in Tables 5 and 6, in Examples 5 to 7, the feeling of tightness after washing the face was prevented, and the skin irritation and eye irritation during and after use were extremely low. It is clear that good cosmetics can be obtained. On the other hand, when the amount of the liquid oil was too large as in Comparative Example 7, the evaluation of the usability and cleansing power was low because the oil remained on the skin after washing the face. Also, as in Comparative Example 8,
If the amount of the liquid oil was too small, the feeling of use of application / massage became heavy, and the skin was burdened, and the feeling of use, cleansing power, and evaluation of skin irritation were low. Furthermore, it can be seen that the addition of a liquid oil other than the liquid oil used in the present invention is not preferable as a cosmetic.

[0033]

As can be seen from Tables 2 to 6, according to the present invention, a low-irritant cleansing makeup having no feeling of tension after washing the face, skin irritation during and after cleansing, and eye irritation during and after cleansing. Charge can be provided.

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Toshiharu Mori 65-1 Irino, Okabe-cho, Shita-gun, Shizuoka Prefecture F-term in Okabe Plant of Nikko Pharmaceutical Co., Ltd. 4C083 AA122 AC022 AC122 AC351 AC352 AC372 AC391 AC392 AC422 AC852 AC042 AD052 AD052 AD052 AD532 AD571 AD572 AD662 BB13 CC23 DD23 EE06 EE10 EE11 FF05

Claims (3)

[Claims] 1. A hypoallergenic cleansing cosmetic comprising (A) lecithin, (B) polyoxyethylene polyoxypropylene glycol, and (C) a liquid oil. 2. The polyoxyethylene polyoxypropylene glycol (B) is polyoxyethylene (30) polyoxypropylene glycol (55), polyoxyethylene (35) polyoxypropylene glycol (4).
0), one or more selected from polyoxyethylene (200) and polyoxypropylene glycol (70), the hypoallergenic cleansing cosmetic according to claim 1. 3. The hypoallergenic cleansing cosmetic according to claim 1, wherein (C) the liquid oil is one or more selected from neopentyl glycol dicaprate, isocetyl octoate, and dialkyl carbonate.