Shiseido Company, Limited

Nof Corporation

Shiseido Research Center

Tohru Okamoto

Hideo Nakajima

Takashi Ohmori

Reiji Miyahara

Tomiyuki Nanba

Hiroyuki Kakoki

Haruhiko Inoue

Toshihiko Nakane

Eriko Takeoka

Yohei Hamano

Akira Ishikubo

Naotake Ozaki

Reji Miyahara

Akiko Takahashi

Mari Suda

Fumio Matsuno

The present invention is an oil-in-water emulsion composition containing a hydrophilic non-ionic surfactant or hydrophilic anionic surfactant, a higher aliphatic alcohol, water, and an oil ingredient which meets specific conditions. This is an oil-in-water emulsion composition with good high temperature stability and usability, and can be used as a cream-like endermic liniment such as a cosmetic.

Oil-in-water emulsion composition

A skin treatment composition of the present invention is an external composition for skin comprising an alkylene oxide derivative expressed by Formula (I):RO-[(AO)(EO)]&#x2014;R&#x2003;&#x2003;(I)wherein AO is an oxyalkylene group of Cor C; EO is an oxyethylene group; m and n are 1&#x2266;m&#x2266;70 and 1&#x2266;n&#x2266;70 respectively, wherein EO is 20&#x2dc;80% by weight with respect to a total of AO and EO; each of Rand Ris a hydrogen or a hydrocarbon group having C. The alkylene oxide derivative (I) has a moisturizing effect, a rough skin improving effect, a stickiness improving effect, and a transdermal absorption promoting effect. When a refreshing agent is used together therewith in the composition of the present invention, the refreshing effect lasts for a long time and it is excellent in feeling of use without skin stimulation.

Skin treatment composition

A skin treatment composition of the present invention is an external composition for skin comprising an alkylene oxide derivative expressed by Formula (I):RO&#x2014;[(AO)(EO)]&#x2014;R&#x2003;&#x2003;(I)wherein AO is an oxyalkylene group of Cor C; EO is an oxyethylene group; m and n are 1&#x2266;m&#x2266;70 and 1&#x2266;n&#x2266;70 respectively, wherein EO is 20&#x2dc;80% by weight with respect to a total of AO and EO; each of Rand Ris a hydrogen or a hydrocarbon group having C. The alkylene oxide derivative (I) has a moisturizing effect, a rough skin improving effect, a stickiness improving effect, and a transdermal absorption promoting effect. When a refreshing agent is used together therewith in the composition of the present invention, the refreshing effect lasts for a long time and it is excellent in feeling of use without skin stimulation.

A piezoelectric bimorph element two piezoelectric elements to produce an electromotive force by imparting a stress to respective piezoelectric elements. The piezoelectric bimorph element is arranged in an oscillator such that the piezoelectric bimorph element is deformed in the electromotive force generating direction. An electrode having a predetermined area connected with a good electric conductor which is connected to conduct a current generated from the piezoelectric bimorph element is arranged at a patting part interlocked with the oscillator to oscillate. An electrode of opposite pole is connected with the piezoelectric bimorph element through the good electric conductor and arranged at a handle to be coupled with the oscillator, and a rectifier for rectifying an AC electromotive force generated by oscillating the oscillator is arranged to connect the good electric conductors which are connected with both electrodes.

Ion introducer employing piezoelectric bimorph element

Artificial skin having a thickness of 100 to 1,000 &#x3bc;m, and prepared from a polymer which, when formed into a thin film having a thickness of 100&#x2013;1,000 &#x3bc;m, exhibits a percent transmission of light having a wavelength of 450&#x2013;280 nm of at least 10%. In the artificial skin of the present invention, grooves which imitate furrows are provided on one surface. Also disclosed is a method for evaluating UV screening agents making use of the artificial skin of the present invention, on the basis of the relation between UV shielding power of a UV screening agent and UV transmission through the artificial skin.

Artificial skin and method for evaluating UV screening agent by use of the same

An oil-in-water emulsion composition containing a vitamin A fatty acid ester, which further contains means for preventing oxidation of the vitamin A fatty acid ester and means for preventing hydrolysis of the vitamin A fatty acid ester. The vitamin A fatty acid ester is stabilized in the composition. The composition is particularly suitable for purposes of external-use.

Oil-in-water type emulsified composition

A humectant characteristically comprises a diol represented by the following general formula (I):

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Yokohama, Japan

Tohru Okamoto