Oil-in-water emulsion cosmetic for massage

Abstract

To provide an oil-in-water emulsion cosmetic for massage that maintains a consistent thickness during massage, allows for smooth finger gliding, and exhibits good long-term stability, leaving the skin plump and soft after use. [Solution] The following components (A) to (D) (A) Sucrose fatty acid ester (B) Fatty acid ester type oils with a melting point of 30°C or higher (C) Triethylhexanoin (D)PEG-150 The present invention provides an oil-in-water emulsion cosmetic for massage, comprising the following: component (B) content of 1.0 to 5.0% by weight, component (C) content of 2.0 to 15% by weight, component (D) content of 0.1 to 1.0% by weight, and the total amount of oils containing components (B) and (C) being 30 to 50% by weight.

Description

Technical Field

[0001] The present invention relates to an oil-in-water type emulsified cosmetic for massage. More specifically, it relates to an oil-in-water type emulsified cosmetic for massage that has a constant thickness during massage, good finger slipperiness, and good temporal stability such that the skin becomes plump and soft after use.

Background Art

[0002] Massage is an act expected to have effects such as relaxing the stiffness of muscles, promoting blood and lymph circulation, and improving metabolism by applying appropriate pressure and stimulation to the face. A massage cosmetic is a cosmetic that, when applied onto the skin during massage, not only reduces friction on the skin but also provides a more effective and comfortable feeling of use by incorporating beauty ingredients.

[0003] As massage cosmetics, various forms such as cream, lotion, oil, balm, aqueous liquid, and aqueous gel types are commercially available. Not only do they reduce friction on the skin, but they also allow for massage while holding the skin, so there are cases where thickness is given to the massage cosmetic. Particularly in the case of oil-in-water type emulsified cosmetics, in order to give the cosmetic sufficient thickness, a large amount of oil agent may be blended. However, it may become heavy in terms of elongation, have poor finger slipperiness, or the oil agent may remain on the skin after use, making it difficult to feel the softness of the skin, resulting in an unsatisfactory feeling of use. Also, in some cases, emulsification stability cannot be maintained by blending a large amount of oil agent.

[0004] To date, an emulsified cosmetic (Patent Document 1) has been developed that allows for stable, long-duration massage treatments without burdening the skin, characterized by containing N-acyl amino acids and / or their salts, water-soluble polymers, and linear saturated alcohols with 14 to 24 carbon atoms. However, there was room for improvement regarding finger glide during massage. In addition, oil-in-water emulsified cosmetic (Patent Document 2) characterized by containing dimethylpolysiloxane, vegetable oils with a melting point of 25 to 50°C, and / or fatty acid triglycerides with a melting point of 25 to 50°C, and oil-in-water emulsified composition (Patent Document 3) characterized by containing surfactants, oil-phase components, aqueous components, hydrophobic modified polyether urethanes, and / or polysaccharides in an amount of 30% or more by mass of the total composition, have been developed, but none of them have solved all of the above problems. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2012-36145 [Patent Document 2] Japanese Patent Publication No. 2024-136883 [Patent Document 3] Japanese Patent Publication No. 2021-116232 [Overview of the project] [Problems that the invention aims to solve]

[0006] Therefore, the object of the present invention is to provide an oil-in-water emulsion cosmetic for massage that has a consistent thickness during massage, allows for good finger glide, and has good long-term stability, leaving the skin plump and soft after use. [Means for solving the problem]

[0007] In other words, the present invention relates to the following components (A) to (D) (A) Sucrose fatty acid ester (B) Fatty acid ester type oils with a melting point of 30°C or higher (C) Triethylhexanoin (D)PEG-150 The present invention provides an oil-in-water emulsion cosmetic for massage, which contains the following: component (B) has a content of 1.0 to 5.0% by weight, component (C) has a content of 2.0 to 15% by weight, component (D) has a content of 0.1 to 1.0% by weight, and the total amount of oils containing components (B) and (C) is 30 to 50% by weight.

[0008] Furthermore, the present invention provides an oil-in-water emulsion cosmetic for massage in which component (A) is sucrose palmitate and its content is 1.5 to 5.0% by weight.

[0009] Furthermore, the present invention provides an oil-in-water emulsion cosmetic for massage in which component (B) is cetyl myristate. [Effects of the Invention]

[0010] The oil-in-water emulsion cosmetic for massage of the present invention is an oil-in-water emulsion cosmetic for massage that has a consistent thickness during massage, provides good finger glide, and exhibits good long-term stability, leaving the skin plump and soft after use. [Best Mode for Carrying Out the Invention]

[0011] The content of component (A) sucrose fatty acid ester of the present invention is not particularly limited for the oil-in-water emulsion cosmetic for massage, but is preferably 1.5 to 5.0% by weight. Within this range, an oil-in-water emulsion cosmetic for massage can be obtained that exhibits particularly excellent usability, such as a consistent thickness during massage, smooth finger glide, and softness of the skin after use, while ensuring sufficient stability over time.

[0012] The component (A) sucrose fatty acid ester of the present invention is not particularly limited, but examples include sucrose laurate, sucrose myristate, sucrose palmitate, and sucrose stearate. Among these, sucrose palmitate and sucrose stearate are preferred in that they provide a certain thickness during massage and allow for good finger glide, and sucrose palmitate is even more preferred in that it provides a certain thickness during massage.

[0013] In the present invention, component (A), sucrose fatty acid ester, functions as an emulsifier in the oil-in-water emulsion cosmetic for massage of the present invention, and any sucrose fatty acid ester commonly used in cosmetics can be used. Commercially available sucrose fatty acid esters can be used, and examples include Surfhope SE COSME C-1616 and Surfhope SE COSME C-1816 from Mitsubishi Chemical Corporation, and Cosmelike S-10 from Daiichi Kogyo Seiyaku Co., Ltd.

[0014] In this invention, the melting point is measured by the second or third method of melting point measurement, which are general test methods of the Quasi-Drug Raw Material Standards. Alternatively, the melting point value listed in catalogs, etc., may be used.

[0015] The content of component (B) of the present invention, a fatty acid ester type oil with a melting point of 30°C or higher, is 1.0 to 5.0% by weight, preferably 1.5 to 3.5% by weight, relative to the oil-in-water emulsion cosmetic for massage. Within this range, an oil-in-water emulsion cosmetic for massage can be obtained that offers excellent usability, such as a consistent thickness during massage, smooth finger glide, and softness of the skin after use, as well as good stability over time. If the content of component (B) of the present invention is less than 1.0% by weight, a consistent thickness during massage may not be felt, or the softness of the skin after use may not be felt, and if it is greater than 5.0% by weight, finger glide may be poor.

[0016] The component (B) of the present invention, a fatty acid ester type oil with a melting point of 30°C or higher, is not particularly limited, but examples include cetyl myristate, myristyl myristate, cetyl palmitate, and stearyl stearate. Among these, cetyl myristate and cetyl palmitate are preferred in that they provide a certain thickness during massage and leave the skin feeling soft after use, and cetyl myristate is even more preferred in that it provides a certain thickness during massage.

[0017] Component (B) of the present invention, any fatty acid ester type oil having a melting point of 30°C or higher, as long as it is commonly used in cosmetics, can be used. Commercial fatty acid ester type oils with a melting point of 30°C or higher can be used, and examples include Sperm Acetate manufactured by NOF Corporation, and NIKKOL N-SPV and NIKKOL MM manufactured by Nikko Chemicals Co., Ltd.

[0018] The content of component (C) triethylhexanoin of the present invention is 2.0 to 15% by weight, preferably 3.0 to 10% by weight, relative to the oil-in-water emulsion cosmetic for massage. Within this range, an oil-in-water emulsion cosmetic for massage can be obtained that offers excellent usability, such as a consistent thickness during massage, smooth finger glide, and softness of the skin after use, as well as good stability over time. If the content of component (C) of the present invention is less than 2.0% by weight, finger glide may be poor or the softness of the skin after use may not be felt, and if it is greater than 15% by weight, a consistent thickness during massage may not be felt.

[0019] Any triethylhexanoin (C) used in ordinary cosmetics can be used as component (C) of the present invention. Commercially available triethylhexanoin can be used, and NIKKOL Trifat S-308 manufactured by Nikko Chemicals Co., Ltd. is an example.

[0020] The content of component (D) PEG-150 in the present invention is 0.1 to 1.0% by weight, preferably 0.2 to 0.7% by weight, based on the oil-in-water type massage cosmetic. Within these ranges, an oil-in-water type massage cosmetic excellent in the feeling of use such as a certain thickness, finger slipperiness during massage, and softness of the skin after use, and having good stability over time can be obtained. When the content of component (D) in the present invention is less than 0.1% by weight, a certain thickness during massage may not be felt. When it is more than 1.0% by weight, the finger slipperiness may deteriorate or the stability over time may deteriorate.

[0021] Any component (D) PEG-150 of the present invention can be used as long as it is used in ordinary cosmetics. It is possible to use commercially available products, and PEG#6000 manufactured by NOF Corporation can be cited as an example.

[0022] The content of the oil agent used in the oil-in-water type massage cosmetic of the present invention is 30 to 50% by weight, preferably 35 to 45% by weight, based on the oil-in-water type massage cosmetic. Within these ranges, an oil-in-water type massage cosmetic excellent in the feeling of use such as a certain thickness, finger slipperiness during massage, and softness of the skin after use, and having good stability over time can be obtained. When the content of the oil agent in the present invention is less than 30% by weight, a certain thickness during massage may not be felt. When it is more than 50% by weight, the finger slipperiness may deteriorate or the stability over time may deteriorate.

[0023] Examples of oils used in the oil-in-water emulsion cosmetic for massage of the present invention include hydrocarbons, fats and oils, waxes, synthetic esters, silicones, fatty acids, and higher alcohols. Specifically, these include squalane, mineral oil, petrolatum, paraffin, microcrystalline wax, olive oil, almond oil, macadamia nut oil, meadowfoam oil, beeswax, carnauba wax, candelilla wax, jojoba seed oil, phytosteryl / octyldodecyl lauroyl glutamate, phytosteryl macadamia nut fatty acid, octyldodecyl myristate, 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, and the like.

[0024] In addition to the essential components mentioned above, the oil-in-water emulsion cosmetic composition for massage of the present invention may contain, in addition to the essential components mentioned above, other components commonly used in cosmetics, such as nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, aqueous components, water-soluble polymers, antioxidants, UV absorbers, powders, fragrances, chelating agents, colorants, and beauty ingredients, to the extent that they do not impair the effects of the present invention.

[0025] The dosage form of the oil-in-water emulsion cosmetic for massage of the present invention is not particularly limited, but examples include lotion, cream, etc. [Examples]

[0026] The present invention will be specifically described below with reference to examples, but the technical scope of the present invention is not limited to these examples. Unless otherwise specified, the content will be expressed in weight percent.

[0027] (Manufacturing method) The mixture of uniformly mixed components 1 and 2 and heated and dissolved components 3 to 7 was heated to 80°C to obtain the oil phase. Meanwhile, the mixture of uniformly mixed components 8 to 14 was heated to 80°C to obtain the aqueous phase. After mixing the oil phase and aqueous phase, the mixture was cooled to 35°C to obtain an oil-in-water emulsion cosmetic for massage.

[0028] Oil-in-water emulsion cosmetics for massage, having the compositions listed in Tables 1-5 below, were prepared, and their temporal stability and usability ("consistent thickness during massage," "smoothness of fingers during massage," and "plump, soft skin after massage") were evaluated using the following test methods. The results are shown in Tables 1-5.

[0029] (Evaluation method) Stability over time test After leaving the samples at 50°C for one month, their appearance was observed visually and under a microscope, and they were evaluated according to the following criteria. ○: No separation or coalescence / aggregation of emulsified particles was observed. ×: Separation or coalescence / aggregation of emulsified particles occurred.

[0030] Usability (consistent thickness during massage) A user test was conducted by a panel of experts (15 people), who evaluated the perceived thickness during massage on a two-point scale: "feelable" and "not felt," according to the following criteria. ◎: More than 12 people rated it as having a certain thickness. ○: 8 to 11 people rated it as having a certain thickness. △: 4 to 7 people rated it as having a certain thickness. ×: Three or fewer people rated it as having a certain thickness.

[0031] Usability (finger glide during massage) A user test was conducted by a panel of 15 experts, who evaluated the finger glide during massage on a two-point scale: "good" and "bad," according to the following criteria. ◎: More than 12 people rated it as having good finger glide. ○: 8 to 11 people rated it as having good finger glide. △: 4 to 7 people rated it as having good finger glide. ×: Fewer than 3 people rated it as having good finger glide.

[0032] Ease of use (softness and plumpness of the skin after massage) A user test was conducted by a panel of experts (15 people), who evaluated the plumpness and softness of the skin after massage on a two-point scale: "feel" and "do not feel," according to the following criteria. ◎: More than 12 people rated it as having a plump and soft texture. ○: 8 to 11 people rated it as having a plump, soft texture. △: 4-7 people rated it as having a plump and soft texture. ×: Fewer than 3 people rated it as having a plump, soft texture.

[0033] [Table 1] *1 Surfhope SE COSME C-1216 (manufactured by Mitsubishi Chemical Corporation) *2 Surfhope SE COSME C-1416 (manufactured by Mitsubishi Chemical Corporation) *3 Surfhope SE COSME C-1616 (manufactured by Mitsubishi Chemical Corporation) *4 Surf Hope SE COSME C-1816 (manufactured by Mitsubishi Chemical Corporation) *5 NIKKOL Decaglyn 1-M (manufactured by Nikko Chemicals Co., Ltd.) *6 NIKKOL MYS-25V (manufactured by Nikko Chemicals Co., Ltd.) *7 Carnation (manufactured by Sonneborn) *8 NIKKOL Trifat S-308 (manufactured by Nikko Chemicals Co., Ltd.) *9 Chloratum V (manufactured by Croda Japan Co., Ltd.) *10 Sperm Acetate (manufactured by NOF Corporation) *11 Behenyl alcohol (manufactured by Higher Alcohol Industry Co., Ltd.) *12 Diglycerin S (manufactured by Sakamoto Pharmaceutical Co., Ltd.) *13 PEG #6000 (manufactured by NOF Corporation)

[0034] As shown in Examples 1-8 of Table 1, when sucrose fatty acid esters were included, satisfactory results were obtained in all evaluated items. Among these, Examples 2-4, which contained sucrose palmitate in a content of 1.5-5.0% by weight, yielded particularly satisfactory results. On the other hand, as shown in Comparative Examples 1 and 2, when polyglyceryl-10 myristate or PEG-25 stearate were included as emulsifiers instead of sucrose fatty acid esters, satisfactory results were not obtained in terms of long-term stability or consistent thickness during massage.

[0035] [Table 2] *14 NIKKOL N-SPV (manufactured by Nikko Chemicals Co., Ltd.) *15 NIKKOL MM (manufactured by Nikko Chemicals Co., Ltd.) *16 Amlepus SS (manufactured by Higher Alcohol Industry Co., Ltd.) *17 Esterol DISM (manufactured by National Mimatsu Co., Ltd.) *18 Pearl Ream 46 (manufactured by NOF Corporation) *19 Multiwax W-445 (manufactured by Sonneborn)

[0036] As shown in Examples 9-16 of Table 2, when a fatty acid ester type oil with a melting point of 30°C or higher was contained in an amount of 1.0-5.0% by weight, satisfactory results were obtained in all evaluated items. Among these, Examples 10-12, which contained cetyl myristate in an amount of 1.5-3.5% by weight, yielded particularly satisfactory results. On the other hand, as shown in Comparative Examples 3-5, when a fatty acid ester type oil with a melting point of 30°C or higher was not contained, or when it was contained in an amount less than 1.0% by weight or more than 5.0% by weight, satisfactory results were not obtained in terms of consistent thickness during massage or finger glide during massage. Furthermore, as shown in Comparative Examples 6-8, when diisostearyl malate, hydrogenated polyisobutene, or microcrystalline wax were contained instead of a fatty acid ester type oil with a melting point of 30°C or higher, satisfactory results were not obtained in terms of consistent thickness during massage or the plumpness and softness of the skin after massage.

[0037] [Table 3] *20 Saracos 99 (manufactured by Nisshin Oillio Co., Ltd.) *21 Saracos 5408 (manufactured by Nisshin Oillio Co., Ltd.)

[0038] As shown in Examples 17-21 of Table 3, when triethylhexanoin was contained at a concentration of 2.0-15% by weight, satisfactory results were obtained in all evaluated items, with particularly satisfactory results obtained in Examples 18-20, where the triethylhexanoin content was 3.0-10% by weight. On the other hand, as shown in Comparative Examples 9-11, when triethylhexanoin was not contained, or when it was contained at a concentration of less than 2.0% by weight or more than 15% by weight, satisfactory results were not obtained in terms of consistent thickness during massage, finger glide during massage, and plump, soft skin after massage. Furthermore, as shown in Comparative Examples 12 and 13, when isononyl isononanoate or pentaerythrityl tetraethylhexanoate were used instead of triethylhexanoin, satisfactory results were not obtained in terms of consistent thickness during massage or finger glide during massage.

[0039] [Table 4] *22 PEG #400 (manufactured by NOF Corporation) *23 PEO-18P (manufactured by Sumitomo Seika Co., Ltd.)

[0040] As shown in Examples 22-26 of Table 4, when PEG-150 was included at a concentration of 0.1-1.0% by weight, satisfactory results were obtained in all evaluated items, with particularly satisfactory results obtained in Examples 23-25, where the PEG-150 content was 0.2-0.7% by weight. On the other hand, as shown in Comparative Examples 14-16, when PEG-150 was not included, or when it was included at a concentration of less than 0.1% by weight or more than 1.0% by weight, satisfactory results were not obtained in terms of consistent thickness during massage or finger glide during massage. Furthermore, as shown in Comparative Examples 17 and 18, when PEG-8 or PEG-115M was included instead of PEG-150, satisfactory results were not obtained in terms of consistent thickness during massage or finger glide during massage.

[0041] [Table 5]

[0042] As shown in Examples 27-35 of Table 5, when the total amount of the oil containing components (B) and (C) was 30-50% by weight, satisfactory results were obtained in all evaluated items. Among these, Examples 28-30 and 33, 34, where the total amount of the oil containing components (B) and (C) was 35-45% by weight, yielded particularly satisfactory results. On the other hand, as shown in Comparative Examples 19-22, when the total amount of the oil containing components (B) and (C) was less than 30% by weight or more than 50% by weight, satisfactory results were not obtained in terms of consistent thickness during massage, finger glide during massage, and stability over time.

[0043] Next, other embodiments of the present invention are shown. In all of Examples 36 to 38, satisfactory results were obtained for all evaluated items.

[0044] (Example 36: Creamy cosmetic) (Ingredients) (Weight%) 1. Glycerin 5.0 2. Sucrose palmitate *3 3.0 3. Sucrose polystearate *24 0.5 4. Mineral oil *7 20.0 5. Jojoba seed oil *25 5.0 6. Triethylhexanoin *8 5.0 7. Vaseline *9 5.0 8. Cetyl myristate *10 2.0 9. Hydrogenated rapeseed alcohol *26 0.5 10.Purified water remainder 11. Carbomer 0.3 12. Sodium hyaluronate *27 0.05 13. Glycerin 5.0 14. PEG-150 *13 0.3 15. Preservative (appropriate amount) 16. Neutralizing agent (appropriate amount) 17. Plant extract (appropriate amount) *24 CosmeLike S-10 (manufactured by Daiichi Kogyo Seiyaku Co., Ltd.) *25 NIKKOL Jojoba Oil E (manufactured by Nikko Chemicals Co., Ltd.) *26 Alcohol No. 20-B (manufactured by Higher Alcohol Industry Co., Ltd.) *27 Peems-HY (manufactured by Technoble Co., Ltd.) (Manufacturing method) The oil phase was obtained by mixing components 1-3, which were uniformly mixed, with components 4-9, which were heated and dissolved, and then heating the mixture to 80°C. On the other hand, the aqueous phase was obtained by uniformly mixing components 10-16 and heating the mixture to 80°C. After mixing the oil phase and the aqueous phase, component 17 was added at 40°C and cooled to 35°C to obtain an oil-in-water emulsion cosmetic for massage.

[0045] (Example 37: Creamy cosmetic) (Ingredients) (Weight%) 1. Glycerin 5.0 2. Sucrose palmitate *3 1.5 3. Sucrose stearate *4 1.5 4. Mineral oil *7 20.0 5. Meadowfoam oil *28 5.0 6. Triethylhexanoin *8 8.0 7. Diisostearyl malate *17 5.0 8. Cetyl palmitate *14 1.0 9. Cetyl myristate *15 1.5 10. Behenyl alcohol *11 0.5 11.Purified water remainder 12. Carbomer 0.2 13. Xanthan gum *29 0.05 14.1,3-Butylene glycol 5.0 15. Diglycerin *12 5.0 16. PEG-150 *13 0.5 17. Preservative (appropriate amount) 18. Neutralizing agent (appropriate amount) 19. Water-soluble collagen *30 0.1 20.Fragrance (appropriate amount) *28 Clopure Medform (manufactured by Croda Japan Co., Ltd.) *29 Echo Gum (manufactured by MP Gokyo Food & Chemical Co., Ltd.) *30 Alfomarine-CL (manufactured by Technoble Co., Ltd.) (Manufacturing method) The oil phase was obtained by mixing components 1-3, which were uniformly mixed, with components 4-10, which were heated and dissolved, and then heating the mixture to 80°C. Meanwhile, the aqueous phase was obtained by uniformly mixing components 11-18 and heating the mixture to 80°C. After mixing the oil phase and the aqueous phase, components 19 and 20 were mixed at 60°C and cooled to 35°C to obtain an oil-in-water emulsion cosmetic for massage.

[0046] (Example 38: Emulsion-type cosmetic) (Ingredients) (Weight%) 1. Glycerin 3.0 2. Sucrose palmitate *3 2.0 3. Hydrogenated polyisobutene *31 10.0 4. Isostearyl isostearate *32 10.0 5. Triethylhexanoin *8 8.0 6. Diisostearyl malate *17 5.0 7. Cetyl palmitate *14 1.0 8. Cetyl myristate *15 1.5 9.Purified water remainder 10. (Acrylates / C10-30 Alkyl Acrylate) Crosspolymer *33 0.15 11.1,3-Butylene glycol 5.0 12. Diglycerin *12 5.0 13. PEG-150 *13 0.2 14. Preservative (appropriate amount) 15. Neutralizing agent (appropriate amount) 16. Water-soluble collagen *30 0.1 17.Fragrance (appropriate amount) *31 Pearl Ream EX (manufactured by NOF Corporation) *32 Kurodamol ISIS (manufactured by Croda Japan Co., Ltd.) *33 Pemulen TR-1 (manufactured by Lubrizol) (Manufacturing method) The oil phase was obtained by mixing components 1 and 2, which were uniformly mixed, with components 3 to 8, which were heated and dissolved, and then heating the mixture to 80°C. On the other hand, the aqueous phase was obtained by uniformly mixing components 9 to 15 and heating the mixture to 80°C. After mixing the oil phase and the aqueous phase, components 16 and 17 were mixed at 60°C and cooled to 35°C to obtain an oil-in-water emulsion cosmetic for massage. [Industrial applicability]

[0047] The present invention provides an oil-in-water emulsion cosmetic for massage, and more specifically, an oil-in-water emulsion cosmetic for massage that has a consistent thickness during massage, good finger glide, and good long-term stability that leaves the skin plump and soft after use.

Claims

1. The following components (A) to (D) (A) Sucrose fatty acid ester (B) Fatty acid ester type oil with a melting point of 30°C or higher (C) Triethylhexanoin (D) PEG-150 An oil-in-water emulsion cosmetic for massage, characterized in that it contains 1.0 to 5.0% by weight of component (B), 2.0 to 15% by weight of component (C), 0.1 to 1.0% by weight of component (D), and the total amount of oil containing components (B) and (C) is 30 to 50% by weight.

2. The oil-in-water emulsion cosmetic for massage according to claim 1, characterized in that component (A) is sucrose palmitate and its content is 1.5 to 5.0% by weight.

3. The oil-in-water emulsion cosmetic for massage according to claim 1 or 2, characterized in that component (B) is cetyl myristate.

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