JP7406230B2 - Oil-in-water emulsion cosmetics for massage - Google Patents

Description

The present invention relates to an oil-in-water emulsion cosmetic for massage, and more specifically, a cosmetic that has a good base thickness and spreads during use, can continuously provide appropriate resistance to the skin, and has good washability. Regarding.

Massage is an action that is expected to have the effect of improving blood and lymph circulation by rubbing the skin with the palms and fingers. Massage cosmetics are cosmetics that can provide an appropriate amount of friction when applied to the skin during massage, providing a more effective and comfortable feel.

BACKGROUND ART Conventionally, massage cosmetics have been used that contain a large amount of oily ingredients such as liquid oil or solid balm for the purpose of reducing frictional force. However, such oil-based massage cosmetics have problems in that they feel sticky during and after use, and oil remains on the skin after use (Patent Document 1). As a method to solve this problem, it has been proposed to use a light oil such as silicone, but this has the problem of having a low viscosity and causing it to run or spread from the skin (Patent Document 2). Water-based massage cosmetics are also commonly used because they provide a fresh feel. These massage cosmetics include those in liquid form and those in gel form, but they have drawbacks such as insufficient reduction in frictional force during use and insufficient base thickness (Patent Document 3). In addition, there are also massage cosmetics containing a high content of polyhydric alcohol. These massage cosmetics can enhance the blood circulation promoting effect due to the warming effect due to the heat of hydration of polyhydric alcohol, but they have problems such as being difficult to spread, sticky, and dry (Patent Document 4).

On the other hand, cream-type massage cosmetics are easy to apply and can provide an appropriate moisturizing feeling after the treatment. However, if a large amount of oil is added in order to give the base enough thickness to provide appropriate friction and moisturizing feeling during use, it may spread too hard or leave a sticky feeling on the skin after use. There are cases. Furthermore, even if the base is sufficiently thick during application, the thickness may decrease during use, making it impossible to maintain an appropriate frictional force.

JP2005-82481 JP2001-261542 JP2001-122722 JP2010-37272

An object of the present invention is to provide an oil-in-water emulsion cosmetic for massage that has a good base thickness and spreadability during use, can continuously provide appropriate resistance to the skin, and has good washability. Take it as a challenge.

That is, the present invention provides (A) 1 to 5% by weight of sucrose fatty acid ester composed of linear saturated fatty acids having 12 to 18 carbon atoms, (B) glycosyl trehalose and hydrolyzed hydrogenated starch of 0.9 to 11% by weight. % by weight, (C) 5 to 30% by weight of polyhydric alcohol excluding (B), and (D) 30 to 50% by weight of an oil agent , and contains no surfactant other than (A). Provide cosmetics.

The oil-in-water emulsion cosmetic for massage of the present invention has a good base thickness and spreadability when used, can continuously provide appropriate resistance to the skin, and has good washability. It is a fee.

Examples of the sucrose fatty acid ester (A) of the present invention composed of a linear saturated fatty acid having 12 to 18 carbon atoms include sucrose laurate, sucrose myristate, sucrose palmitate, and sucrose stearate. These components may be used alone or in combination of two or more. From the viewpoint of smooth spread, sucrose stearate is preferred.

(A) The content of sucrose fatty acid ester composed of linear saturated fatty acids having 12 to 18 carbon atoms is preferably 1 to 5% by weight, more preferably 1 to 5% by weight, based on the oil-in-water emulsion cosmetic for massage. is 1.5 to 3% by weight. If it is less than 1% by weight, stability over time may be poor. On the other hand, if it exceeds 5% by weight, the oil-in-water emulsion cosmetic for massage may become hard and difficult to spread.

(B) Glycosyl trehalose of the present invention has a basic skeleton of α-D-glucopyranosyl-α-D-glucopyranoside (α,α-trehalose) in which two glucoses are bonded to each other at the α1-position, and the 4-position of one glucose It is an oligosaccharide bonded to the 1st position of α-glucose, and is a trisaccharide to heptasaccharide compound with a degree of glucose polymerization of 2 to 6. More specifically, α-maltosyl α-glucoside with a polymerization degree of 2, α-maltotriosyl α-glucoside with a polymerization degree of 3, α-maltotetraosyl α-glucoside with a polymerization degree of 4, and α-maltotriosyl α-glucoside with a polymerization degree of 5. α-maltopentaosyl α-glucoside, which has a polymerization degree of 6, and α-maltohexaosyl α-glucoside, which has a degree of polymerization of 6, are mentioned.

(B) Hydrolyzed hydrogenated starch is obtained by industrially decomposing starch with acids or enzymes and then hydrogenating it, and the origin of starch is not particularly limited, but for example Examples include potato tubers, sweet potato tubers, corn, wheat seeds, and cassava rhizomes.

(B) A specific product of glycosyl trehalose and hydrolyzed hydrogenated starch includes "Tornale" manufactured by Hayashibara Biochemical Research Institute.

(B) The content of glycosyl trehalose and hydrolyzed hydrogenated starch is preferably 0.9 to 11% by weight, more preferably 2.5 to 9% by weight, based on the oil-in-water emulsion cosmetic for massage. . If it is less than 0.9% by weight, it may not be possible to obtain a sufficient base thickness, adequate finger slippage, or appropriate spreadability. On the other hand, if it exceeds 11% by weight, the base may become too thick and spread difficult.

Polyhydric alcohols other than (C) and (B) used in the present invention refer to water-soluble alcohols having 3 to 6 carbon atoms and two or more hydroxyl groups, and specifically include 1,2-propanediol, 1, Examples include 3-propanediol, 1,3-butylene glycol, 1,2-pentanediol, dipropylene glycol, glycerin, diglycerin, and sorbitol. Among them, glycerin and diglycerin are preferred in terms of ease of spreading and thickness during massage.

(C) The content of polyhydric alcohols other than (B) is preferably 5 to 30% by weight, more preferably 10 to 20% by weight, based on the oil-in-water emulsion cosmetic for massage. If it is less than 5% by weight, it may not be possible to obtain a sufficient thickness of the base and to maintain appropriate finger slippage. On the other hand, if it exceeds 30% by weight, the base may become too thick and spread difficult.

The oil agent (D) used in the present invention is not particularly limited, and includes hydrocarbons, oils and fats, waxes, synthetic esters, silicones, fatty acids, higher alcohols, and the like. For example, squalane, mineral oil, petrolatum, paraffin, microcrystalline wax, olive oil, almond oil, macadamia nut oil, meadowfoam oil, triethylhexanoin, beeswax, lanolin, carnauba wax, candelilla wax, jojoba seed oil, cetyl palmitate, myristicin. Octyldodecyl acid, neopentyl glycol diisononanoate, cetyl ethylhexanoate, isononyl isononanoate, dimethicone, phenyl trimethicone, cyclomethicone, stearic acid, isostearic acid, myristic acid, cetanol, stearyl alcohol, behenyl alcohol, cetostearyl alcohol, cholesterol, etc. can be mentioned.

The content of the oil agent (D) is preferably 30 to 50% by weight, more preferably 35 to 45% by weight, based on the oil-in-water emulsion cosmetic for massage. If it is less than 30% by weight, the thickness of the base during use may be insufficient. On the other hand, if it exceeds 50% by weight, an oil film may remain during rinsing or the stability over time may become poor.

The oil-in-water emulsion cosmetic for massage of the present invention is an oil-in-water type cream-like cosmetic for massage. Regarding the application, there is no restriction on the site of use, and it can be used as a massage cosmetic for the face or body, but from the viewpoint of usability, the application for the face is preferable.

The present invention will be specifically explained below with reference to Examples, but the technical scope of the present invention is not limited thereto. Note that the content is expressed in weight % unless otherwise specified.

Oil-in-water emulsion cosmetics for massage shown in Tables 1 to 3 were prepared by the method shown below.
(Preparation method)
Add component B part warmed to 70 to 75°C little by little to component a part while stirring, then add component c part heated to 80 to 85°C to emulsify, then add component d part, It was prepared by cooling to 30°C.

(Evaluation method)
A panel of 20 experts evaluated each type of oil-in-water emulsion cosmetic for massage to achieve ``appropriate base thickness during massage,'' ``appropriate finger slippage during massage,'' and ``appropriate spreadability during massage.'' An evaluation was made regarding "no oil film remaining after rinsing". There were two grades of evaluation: ``Good'' and ``Poor'' for ``Appropriate base thickness during massage'', ``Appropriate finger slippage during massage'', and ``Appropriate spread during massage'', and ``Good'' and ``Poor''. Regarding the "absence of oil film residue", evaluation was carried out in two stages: "absent" and "presence", and the evaluation criteria were as follows.
[Evaluation of appropriate base thickness during massage]
◎: 16 or more people evaluated the base thickness as being good.
○: 11 to 15 people evaluated the base thickness as being good.
△: 6 to 10 people evaluated the base thickness as being good.
×: Five or fewer people rated the base thickness as good.
[Evaluation of sustained finger slippage during massage]
◎: 16 or more people evaluated that the finger slip was good.
○: 11 to 15 people evaluated that the finger slip was good.
△: 6 to 10 people evaluated that the finger slip was good.
×: Five or fewer people rated the finger slippage as good.
[Evaluation of appropriate spread during massage]
◎: 16 or more people evaluated it as having good spreadability.
○: 11 to 15 people rated it as having good spreadability.
△: 6 to 10 people evaluated it as having good spreadability.
×: 5 or less people rated it as being easy to spread.
[Evaluation of no oil film remaining after rinsing]
◎: 16 or more people evaluated that there was no oil film left after rinsing.
○: 11 to 15 people evaluated that there was no oil film left after rinsing.
Δ: 6 to 10 people evaluated that no oil film remained after rinsing.
×: 5 or less people evaluated that there was no oil film left after rinsing.

*1 Tornale: manufactured by Hayashibara Biochemical Research Institute Co., Ltd. (glycosyl trehalose: 47%, hydrolyzed hydrogenated starch: 27%, purified water: 26%)

From the results in Table 1, when sucrose laurate, sucrose palmitate, and sucrose stearate were contained in the amounts shown in each example, satisfactory results were obtained in all evaluated items. Furthermore, from the results of Examples 2, 4, and 5, among sucrose fatty acid esters composed of linear saturated fatty acids with the same content of 12 to 18 carbon atoms, sucrose stearate was highly evaluated. was gotten. On the other hand, as shown in Comparative Examples 1 to 3, sucrose oleate, polyglyceryl-10 stearate, and PEG-10 phytosterol were used instead of sucrose fatty acid ester composed of linear saturated fatty acids having 12 to 18 carbon atoms. When used, satisfactory results were not obtained regarding the thickness of the base during massage and the duration of appropriate finger sliding.

From the results in Table 2, when containing (B) glycosyl trehalose and hydrolyzed hydrogenated starch in the amounts shown in each example, and (C) polyhydric alcohols other than (B), all the evaluated items were Satisfactory results were obtained. On the other hand, as shown in Comparative Examples 4 to 7, when the specified amount was not included, satisfactory results were not obtained in terms of base thickness during massage, appropriate finger sliding duration, and appropriate spreadability. .

From the results in Table 3, when the amounts of oil agents shown in each example were used, satisfactory results were obtained in all the evaluated items. On the other hand, as shown in Comparative Examples 8 and 9, when the predetermined amount was not included, satisfactory results were not obtained in terms of the thickness of the base during massage and the absence of an oil film remaining after rinsing.

Examples of the oil-in-water emulsion cosmetic for massage according to the present invention are shown below.

(Example 20; Massage cream)
(Ingredients) (Weight%)
1. Glycerin 5.0
2. Sucrose stearate 3.0
3. Purified water 2.0
4. Mineral oil 20.0
5. Macadamia nut oil 5.0
6. Vaseline 5.0
7. Behenyl alcohol 0.5
8. Setanol 0.3
9. Purified water remaining 10. Edetate disodium dihydrate 0.1
11. Carbomer 0.1
12. Xanthan gum 0.1
13. Glycosyltrehalose *1 0.94
14. Hydrolyzed hydrogenated starch *1 0.54
15. Purified water *1 0.52
16. Dipropylene glycol 7.0
17. BG5.0
18. Methylparaben 0.2
19. Purified water 1.0
20. Arginine 0.1
21. Plant extract appropriate amount 22. Fragrance Appropriate amount (preparation method)
A mixture of components 4 to 8 heated at 70 to 75°C is added to the mixture of components 1 to 3 with stirring, and then components 9 to 18 heated to 80 to 85°C are added with stirring and emulsified. Thereafter, a mixture of components 19 and 20 is added to components 1 to 18, followed by components 21 and 22, and the mixture is cooled to 30°C.

(Example 21; Massage cream)
(Ingredients) (Weight%)
1. Glycerin 5.0
2. Sucrose stearate 1.0
3. Sucrose laurate 0.5
4. Purified water 2.0
5. Mineral oil 20.0
6. Olive oil 5.0
7. Octyldodecyl myristate 5.0
8. Microcrystalline wax 5.0
9. Behenyl alcohol 0.5
10. Setanol 0.3
11. Purified water remainder 12. Edetate disodium dihydrate 0.1
13. Carbomer 0.4
14. Glycosyltrehalose *1 3.76
15. Hydrolyzed hydrogenated starch *1 2.16
16. Purified water *1 2.08
17. Diglycerin 10.0
18. BG5.0
19. Methylparaben 0.2
20. Purified water 1.0
21. AMPD 0.2
22. Plant extract appropriate amount 23. Fragrance Appropriate amount (preparation method)
A mixture of components 5 to 10 heated at 70 to 75°C is added to the mixture of components 1 to 4 with stirring, and then components 11 to 19 heated to 80 to 85°C are added with stirring and emulsified. Thereafter, a mixture of components 20 and 21 is added to components 1 to 19, followed by components 22 and 23, and the mixture is cooled to 30°C.

Examples 20 and 21 were evaluated in the same way as the evaluation method described above, and the results showed that the thickness of the base during massage, the duration of appropriate finger sliding during massage, the appropriate spread during massage, and the amount of oil film remaining after rinsing. An oil-in-water emulsified cosmetic for massage which is excellent in freeness was obtained.

According to the present invention, the oil-in-water emulsion cosmetic for massage has good base thickness and spreadability during use, can continuously provide appropriate resistance to the skin, and has good washability for massage. It is possible to provide an oil-in-water emulsion cosmetic for use.

Claims (2)

(A) 1 to 5% by weight of sucrose fatty acid ester composed of linear saturated fatty acids having 12 to 18 carbon atoms;
(B) glycosyl trehalose and hydrolyzed hydrogenated starch 0.9 to 11% by weight,
(C) Polyhydric alcohol excluding (B) 5-30% by weight, and (D) Oil agent 30-50% by weight
An oil-in-water emulsion cosmetic for massage , which contains no surfactant other than (A) . 2. The oil-in-water emulsion cosmetic for massage according to claim 1, wherein (A) the sucrose fatty acid ester composed of a linear saturated fatty acid having 12 to 18 carbon atoms is sucrose stearate.