JP7491496B2 - 化粧水 - Google Patents
化粧水 Download PDFInfo
- Publication number
- JP7491496B2 JP7491496B2 JP2022058496A JP2022058496A JP7491496B2 JP 7491496 B2 JP7491496 B2 JP 7491496B2 JP 2022058496 A JP2022058496 A JP 2022058496A JP 2022058496 A JP2022058496 A JP 2022058496A JP 7491496 B2 JP7491496 B2 JP 7491496B2
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- JP
- Japan
- Prior art keywords
- oil
- lotion
- mass
- liquid
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000006210 lotion Substances 0.000 claims description 81
- 239000007788 liquid Substances 0.000 claims description 43
- 239000000203 mixture Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000002245 particle Substances 0.000 claims description 19
- 239000000839 emulsion Substances 0.000 claims description 16
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 10
- BXWNKGSJHAJOGX-UHFFFAOYSA-N hexadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCO BXWNKGSJHAJOGX-UHFFFAOYSA-N 0.000 claims description 9
- PRAKJMSDJKAYCZ-UHFFFAOYSA-N squalane Chemical compound CC(C)CCCC(C)CCCC(C)CCCCC(C)CCCC(C)CCCC(C)C PRAKJMSDJKAYCZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 6
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims description 6
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 6
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 claims description 5
- 229940043375 1,5-pentanediol Drugs 0.000 claims description 5
- 229960000541 cetyl alcohol Drugs 0.000 claims description 5
- 229940008099 dimethicone Drugs 0.000 claims description 5
- 235000011187 glycerol Nutrition 0.000 claims description 5
- WCVRQHFDJLLWFE-UHFFFAOYSA-N pentane-1,2-diol Chemical compound CCCC(O)CO WCVRQHFDJLLWFE-UHFFFAOYSA-N 0.000 claims description 5
- JXTPJDDICSTXJX-UHFFFAOYSA-N n-Triacontane Natural products CCCCCCCCCCCCCCCCCCCCCCCCCCCCCC JXTPJDDICSTXJX-UHFFFAOYSA-N 0.000 claims description 4
- 229940057874 phenyl trimethicone Drugs 0.000 claims description 4
- 229940032094 squalane Drugs 0.000 claims description 4
- LINXHFKHZLOLEI-UHFFFAOYSA-N trimethyl-[phenyl-bis(trimethylsilyloxy)silyl]oxysilane Chemical compound C[Si](C)(C)O[Si](O[Si](C)(C)C)(O[Si](C)(C)C)C1=CC=CC=C1 LINXHFKHZLOLEI-UHFFFAOYSA-N 0.000 claims description 4
- DGSZGZSCHSQXFV-UHFFFAOYSA-N 2,3-bis(2-ethylhexanoyloxy)propyl 2-ethylhexanoate Chemical compound CCCCC(CC)C(=O)OCC(OC(=O)C(CC)CCCC)COC(=O)C(CC)CCCC DGSZGZSCHSQXFV-UHFFFAOYSA-N 0.000 claims description 2
- 229940045898 sodium stearoyl glutamate Drugs 0.000 claims 2
- KDHFCTLPQJQDQI-BDQAORGHSA-M sodium;(4s)-4-amino-5-octadecanoyloxy-5-oxopentanoate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC(=O)OC(=O)[C@@H](N)CCC([O-])=O KDHFCTLPQJQDQI-BDQAORGHSA-M 0.000 claims 2
- 239000003921 oil Substances 0.000 description 99
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- 125000001931 aliphatic group Chemical group 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
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- -1 polyoxyethylene Polymers 0.000 description 11
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- 150000001335 aliphatic alkanes Chemical class 0.000 description 9
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- 238000000926 separation method Methods 0.000 description 9
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- 150000002430 hydrocarbons Chemical class 0.000 description 7
- 239000010696 ester oil Substances 0.000 description 6
- 229920001296 polysiloxane Polymers 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 125000004432 carbon atom Chemical group C* 0.000 description 5
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- 239000002562 thickening agent Substances 0.000 description 5
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- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 4
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- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
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- 230000000996 additive effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
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- 235000021317 phosphate Nutrition 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- BANXPJUEBPWEOT-UHFFFAOYSA-N 2-methyl-Pentadecane Chemical compound CCCCCCCCCCCCCC(C)C BANXPJUEBPWEOT-UHFFFAOYSA-N 0.000 description 2
- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 2
- GTJOHISYCKPIMT-UHFFFAOYSA-N 2-methylundecane Chemical compound CCCCCCCCCC(C)C GTJOHISYCKPIMT-UHFFFAOYSA-N 0.000 description 2
- QCDWFXQBSFUVSP-UHFFFAOYSA-N 2-phenoxyethanol Chemical compound OCCOC1=CC=CC=C1 QCDWFXQBSFUVSP-UHFFFAOYSA-N 0.000 description 2
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 description 2
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- SGVYKUFIHHTIFL-UHFFFAOYSA-N Isobutylhexyl Natural products CCCCCCCC(C)C SGVYKUFIHHTIFL-UHFFFAOYSA-N 0.000 description 2
- 239000004166 Lanolin Substances 0.000 description 2
- 235000001014 amino acid Nutrition 0.000 description 2
- 150000001413 amino acids Chemical group 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- NOPFSRXAKWQILS-UHFFFAOYSA-N docosan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCCCCCO NOPFSRXAKWQILS-UHFFFAOYSA-N 0.000 description 2
- UKMSUNONTOPOIO-UHFFFAOYSA-N docosanoic acid Chemical compound CCCCCCCCCCCCCCCCCCCCCC(O)=O UKMSUNONTOPOIO-UHFFFAOYSA-N 0.000 description 2
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
- 238000002296 dynamic light scattering Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003349 gelling agent Substances 0.000 description 2
- 229930195712 glutamate Natural products 0.000 description 2
- DCAYPVUWAIABOU-UHFFFAOYSA-N hexadecane Chemical compound CCCCCCCCCCCCCCCC DCAYPVUWAIABOU-UHFFFAOYSA-N 0.000 description 2
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- VKPSKYDESGTTFR-UHFFFAOYSA-N isododecane Natural products CC(C)(C)CC(C)CC(C)(C)C VKPSKYDESGTTFR-UHFFFAOYSA-N 0.000 description 2
- CJBFZKZYIPBBTO-UHFFFAOYSA-N isotetradecane Natural products CCCCCCCCCCCC(C)C CJBFZKZYIPBBTO-UHFFFAOYSA-N 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 235000019388 lanolin Nutrition 0.000 description 2
- 229940039717 lanolin Drugs 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
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- 229920006395 saturated elastomer Polymers 0.000 description 2
- 230000001953 sensory effect Effects 0.000 description 2
- QKHBMQWPOUUMQZ-BDQAORGHSA-M sodium;hydron;(2s)-2-(octadecanoylamino)pentanedioate Chemical compound [Na+].CCCCCCCCCCCCCCCCCC(=O)N[C@H](C(O)=O)CCC([O-])=O QKHBMQWPOUUMQZ-BDQAORGHSA-M 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- HLZKNKRTKFSKGZ-UHFFFAOYSA-N tetradecan-1-ol Chemical compound CCCCCCCCCCCCCCO HLZKNKRTKFSKGZ-UHFFFAOYSA-N 0.000 description 2
- BGHCVCJVXZWKCC-UHFFFAOYSA-N tetradecane Chemical compound CCCCCCCCCCCCCC BGHCVCJVXZWKCC-UHFFFAOYSA-N 0.000 description 2
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 1
- WFXHUBZUIFLWCV-UHFFFAOYSA-N (2,2-dimethyl-3-octanoyloxypropyl) octanoate Chemical compound CCCCCCCC(=O)OCC(C)(C)COC(=O)CCCCCCC WFXHUBZUIFLWCV-UHFFFAOYSA-N 0.000 description 1
- BJDAUCLANVMIOB-UHFFFAOYSA-N (3-decanoyloxy-2,2-dimethylpropyl) decanoate Chemical compound CCCCCCCCCC(=O)OCC(C)(C)COC(=O)CCCCCCCCC BJDAUCLANVMIOB-UHFFFAOYSA-N 0.000 description 1
- ALSTYHKOOCGGFT-KTKRTIGZSA-N (9Z)-octadecen-1-ol Chemical compound CCCCCCCC\C=C/CCCCCCCCO ALSTYHKOOCGGFT-KTKRTIGZSA-N 0.000 description 1
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 1
- DMBUODUULYCPAK-UHFFFAOYSA-N 1,3-bis(docosanoyloxy)propan-2-yl docosanoate Chemical compound CCCCCCCCCCCCCCCCCCCCCC(=O)OCC(OC(=O)CCCCCCCCCCCCCCCCCCCCC)COC(=O)CCCCCCCCCCCCCCCCCCCCC DMBUODUULYCPAK-UHFFFAOYSA-N 0.000 description 1
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 1
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- JPWUIQIFCDAWQX-UHFFFAOYSA-N 2,3-dihydroxypropyl 2-ethylhexanoate Chemical compound CCCCC(CC)C(=O)OCC(O)CO JPWUIQIFCDAWQX-UHFFFAOYSA-N 0.000 description 1
- CHHHXKFHOYLYRE-UHFFFAOYSA-M 2,4-Hexadienoic acid, potassium salt (1:1), (2E,4E)- Chemical compound [K+].CC=CC=CC([O-])=O CHHHXKFHOYLYRE-UHFFFAOYSA-M 0.000 description 1
- DBHODFSFBXJZNY-UHFFFAOYSA-N 2,4-dichlorobenzyl alcohol Chemical compound OCC1=CC=C(Cl)C=C1Cl DBHODFSFBXJZNY-UHFFFAOYSA-N 0.000 description 1
- LEEDMQGKBNGPDN-UHFFFAOYSA-N 2-methylnonadecane Chemical compound CCCCCCCCCCCCCCCCCC(C)C LEEDMQGKBNGPDN-UHFFFAOYSA-N 0.000 description 1
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- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
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Description
本発明の他の目的は、以下の特徴の少なくとも1つ:高い含有量の水と高い含有量の液状油成分を含むこと、経時的に安定であること、少量の界面活性剤を含むこと、非常に軽い触感を有すること、及び低粘性であること、を示す化粧料組成物を提案することにある。
エマルジョン型の化粧水は、少なくとも2つの相、すなわち1つの油相と1つの水相とを含んでもよい。一実施形態によれば、油相は水相に分散されており、化粧水は水中油型エマルジョンである。油相は、好ましくは1重量%未満、好ましくは0.5重量%未満の固形油成分を含み、更に好ましくは固形油成分を全く含まない。化粧水が、化粧水の質量基準で、0.1質量%未満、好ましくは0.01質量%未満の水用の増粘剤又はゲル化剤を含むことも好ましい。公知の増粘剤は、例えば、カルボマー、カルボキシメチルセルロース又はキサンタンガムである。実際、本発明は、安定していると同時に非常に流動性のある化粧水を提供する。本発明者らは、驚くべきことに、化粧水の安定性を保証するために増粘剤又はゲル化剤が必要とされないことを見出した。
本化粧水は、アニオン界面活性剤と非イオン界面活性剤との混合物からなる界面活性剤を含有することが好ましい。この実施形態では、非イオン界面活性剤は、前述のように脂肪族モノアルコールであり得る。非イオン界面活性剤は、代替的に8~18、好ましくは14~16のHLBを有する非イオン界面活性剤であり得る。アニオン界面活性剤と非イオン界面活性剤の組み合わせは、使用中に良好な感覚を与える安定なエマルジョン化粧水を得るために好ましい。
一実施形態によれば、液状炭化水素油は、液状アルカン油(炭素原子及び水素原子からなる)、液状エステル油(炭素原子、水素原子及び酸素原子からなり、少なくとも1つのエステル基を有する)、及びそれらの混合物からなる群より選択される。
液状アルカン油の具体例としては、流動パラフィン、軽質流動イソパラフィン、ドデカン、イソドデカン、テトラデカン、イソテトラデカン、ヘキサデカン、イソヘキサデカン、スクワラン、植物性スクワラン、ワセリン、ポリイソブチレン、ポリブテン、水添ポリイソブテン等が挙げられる。不揮発性の液状アルカン油が好ましい。
油剤は、ジメチコン、フェニルトリメチコン、アルカン、エステル、及びそれらの混合物からなる群より選択される、25℃かつ大気圧で5~120mPa・sの粘度を有する液状油であることが好ましい。いくつかの異なる実施形態によれば、油剤は、液状シリコーン油、液状アルカン油、液状シリコーン油と液状エステル油との混合物、又は液状アルカン油と液状エステル油との混合物からなる。例えば、上述のように、液状油剤はスクワランからなり、液状油剤はジメチコンからなり、液体油剤はフェニルトリメチコンからなり、又は液体油剤はジメチコン及び液状エステル油からなる。
本発明の特定の態様は、0.5~1.5質量%のアミノ酸系界面活性剤、0.5~1.5質量%の12~24の炭素数を有する飽和モノアルコール、10~15重量%のポリオールの少なくとも1種(好ましくはグリセリン、ブチレングリコール及びペンチレングリコールの混合物)、15~25重量%の、液状シリコーン油、液状アルカン油、液状非ヒドロキシル化エステル油及びそれらの混合物からなる群より選択される液状油成分、及び50~90重量%の水を含有する水中油型エマルジョンに関し、百分率はエマルジョンの重量に基づく。液状油成分は不揮発性であることが好ましい。液状油は、好ましくは水中で液滴を形成し、該液滴は70~160nmの平均サイズを有する。エマルジョンは、好ましくは6~60mPa・sの粘度を有する。上記の第1の実施形態に関して説明したすべての特徴は、この第2の実施形態にも適用することができる。
1)アニオン界面活性剤、ポリオール、水、及び必要に応じて水系の上記添加成分を混合し、全体が均一になるまで加熱攪拌し、水系混合物を得る。
2)脂肪族モノアルコール、油剤、並びに必要に応じて電解質及び油系の上記添加成分を混合し、全体が均一になるまで加熱攪拌して、油系混合物を得る。
3)上記1)で得られた水系混合物をホモジナイザーにて攪拌し、これに2)で得られた油系混合物を添加してさらに攪拌する。
4)上記3)で得られた混合物を、高圧乳化機(例えば、Star Burst:スギノマシン社製)を用いて、高圧(好ましくは、200MPa以上)で複数回処理する。
本発明はまた、上記のようなエマルジョンを調製するための方法を述べる。この方法は、アニオン界面活性剤、ポリオール及び水を含む水相を70~80℃の温度で調製する工程と、非イオン界面活性剤及び油成分を含む油相を70~80℃の温度で調製する工程、70~80℃の温度で水相と油相とを混合し、10,000rpmより高い回転速度で撹拌しながら混合する工程、10,000rpmより高い回転速度でさらに攪拌しながら25℃に冷却する工程、及び高圧乳化装置中で200MPaより高い圧力で混合物を乳化する工程を含む。高圧乳化工程は、水中に安定に分散した平均粒径30~200nmの油滴を得る観点から好ましい。
本発明の意味において、「安定性」又は「安定な化粧水」は、以下の化粧水保管条件で観察することができる:50℃及び4℃で1か月間保管、-18℃で1週間保管、及び/又は温度変動サイクルを伴う保管(例えば、40℃で12時間及び-10℃で12時間のサイクルが1か月間繰り返される)。
表1~3に示すアニオン界面活性剤、ポリオール、水、電解質及びフェノキシエタノールを混合し、75℃で全体が均一になるまで攪拌し、水系混合物を得た。また、表1~3に示す脂肪族モノアルコール及び油剤を混合し、75℃で全体が均一になるまで攪拌し、油系混合物を得た。上記得られた水系混合物をホモジナイザー(T25 digital ULTRA-TURRAX:IKA社製;回転速度:12,000rpm)にて5分間攪拌し、これに上記得られた油系混合物を添加してさらに5分間攪拌した。得られた混合物を室温に冷却した後、高圧乳化機(Star Burst:スギノマシン社製)を用いて、200MPaの圧力で3回処理することで、各実施例及び比較例の化粧水を調製した。各成分の配合割合(質量%)は表1~3に示す通りである。なお、比較例1及び2は、それぞれ実施例2及び3において高圧乳化機による処理を行っていない化粧水である。
上記調製した各化粧水におけるエマルジョン粒子の平均粒径を、粒子径測定装置(DelsaMax CORE;Beckman Coulter社製)を用い、動的光散乱法により測定した。
上記調製した各化粧水の25℃における粘度を、回転粘度計(Rheolab QC:Anton Paar社製;スピンドル:CC27;回転速度:200rpm)を用いて測定した。
(4-1:50℃及び4℃での1か月間保管)
透明容器に上記調製した各化粧水を収容し、蓋をして密閉したうえで、50℃又は4℃で1か月保管した。保管後、油相と水相の分離の有無を観察した。50℃及び4℃のいずれでも油相と水相の分離が観察されなかったものをY、50℃又は4℃のいずれかで油相と水相の分離が観察されたものをNと評価した。
(4-2:-18℃での1週間保管)
透明容器に上記調製した各化粧水を収容し、蓋をして密閉したうえで、-18℃で1週間保管した。保管後、油相と水相の分離の有無を観察した。油相と水相の分離が観察されなかったものをY、油相と水相の分離が観察されたものをNと評価した。
(4-3:40℃及び-10℃でのサイクル試験)
透明容器に上記調製した各化粧水を収容し、蓋をして密閉したうえで、40℃で12時間の保管、-10℃で12時間の保管を交互に繰り返して、合計1か月保管した。油相と水相の分離が観察されなかったものをY、油相と水相の分離が観察されたものをNと評価した。
上記調製した各化粧水の水感、速やかな浸透感及びクリームを使ったかのような仕上がり感について、本発明者らが所属する組織の化粧品専門評価パネル10名(25~55歳)による肌への単回使用試験において、以下の基準にて評価した。
A:顕著に認められる
B:認められる
C:十分には認められない
D:認められない
Claims (2)
- 全質量基準で0.5~1.5質量%であるステアロイルグルタミン酸ナトリウム、全質量基準で0.5~1.5質量%であるセチルアルコール、全質量基準で10~15質量%であるグリセリン、ペンチレングリコール及びブチレングリコールの混合物、全質量基準で10~25質量%である、ジメチコン、スクワラン、フェニルトリメチコン、トリエチルヘキサノイン及びそれらの混合物からなる群より選択される液状油剤、及び全質量基準で50~70質量%の水を含有し、前記ステアロイルグルタミン酸ナトリウムに対する前記液状油剤の比率は20~30であり、エマルジョン粒子の平均粒径は30~200nmである、エマルジョン型の化粧水。
- 25℃における粘度が1~400mPa・sである、請求項1に記載の化粧水。
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