公开(公告)号：US20220202667A1

公开(公告)日：2022-06-30

申请号：US17601704

申请日：2020-04-03

Applicant: Shiseido Company, Ltd.

Inventor： Ryoya ITO ,  Kouichi NAGAI ,  Renaud GILLET ,  Shiho IWAMI ,  Kazuyuki MIYAZAWA ,  Tetsuya KANEMARU ,  Bianca MCCARTHY

IPC: A61K8/27 ,  A61K8/29 ,  A61Q17/04 ,  A61Q19/08 ,  A61K8/99 ,  A61K8/49

Abstract: There is provided a novel composition containing a UV wavelength conversion substance, a dispersant, a UV absorber and/or a UV scattering agent, and an oil content, wherein the blending amount of the dispersant is 1% by weight or more.

公开(公告)号：US20210228471A1

公开(公告)日：2021-07-29

申请号：US17267328

申请日：2019-08-09

Applicant: Shiseido Company, Ltd.

Inventor： Ryoya ITO ,  Kouichi NAGAI ,  Kei UJIMOTO ,  Yuko NAGARE

IPC: A61K8/86 ,  A61K8/73 ,  A61K8/25 ,  A61K8/60 ,  A61K8/31 ,  A61Q17/04 ,  A61K8/37 ,  A61K8/27 ,  A61K8/29

Abstract: The present invention relates to a cosmetic having the innovative, unprecedented property in which the ultraviolet protection effects do not decrease, but conversely increase, due to coming into contact with moisture such as water or perspiration, and due to heat applied in the usage environment. The cosmetic of the present invention contains (A) an ultraviolet protectant; (B) at least one compound that is water-soluble and that has an IOB of 5.0 or lower, selected from among (i) alkylene oxide derivatives and (ii) polyhydric alcohols; and (C) an oil phase thickener; wherein the mass ratio of component (A)/component (B) is 20 or lower; and the (B) (i) alkylene oxide derivatives are polyoxyalkylene/polyoxyethylene copolymer dialkyl ethers represented by the following formula (I): R1O-[(AO)m(EO)n]-R2   (I) wherein R1 and R2, each independently, denote a hydrogen atom or a hydrocarbon group having one to four carbon atoms, AO denotes an oxyalkylene group having three or four carbon atoms, EO denotes an oxyethylene group, 1≤m≤70, 1≤n≤70 and m+n≤40.

公开(公告)号：US20220160605A1

公开(公告)日：2022-05-26

申请号：US17601317

申请日：2020-04-03

Applicant: Shiseido Company, Ltd.

Inventor： Ryoya ITO ,  Kouichi NAGAI ,  Shiho IWAMI ,  Kazuyuki MIYAZAWA ,  Tetsuya KANEMARU ,  Renaud GILLET ,  Bianca MCCARTHY

IPC: A61K8/49 ,  A61K8/06 ,  A61K8/37 ,  A61K8/44 ,  A61K8/27 ,  A61K8/29 ,  A61K8/64 ,  A61K8/67 ,  A61Q17/04

Abstract: To provide a novel oil-in-water type emulsified composition, comprising a UV wavelength conversion substance and a water-soluble alkyl-substituted polysaccharide derivative.

公开(公告)号：US20210338551A1

公开(公告)日：2021-11-04

申请号：US17267325

申请日：2019-08-09

Applicant: Shiseido Company, Ltd.

Inventor： Kouichi NAGAI ,  Kei UJIMOTO ,  Yuko NAGARE ,  Ryoya ITO ,  Marianne Ayaka TOUATI ,  Satoshi YAMAKI

IPC: A61K8/35 ,  A61K8/86 ,  A61Q17/04 ,  G01N21/33

Abstract: The present invention relates to a cosmetic in which the ultraviolet protection effects are increased by heat, and a method for manufacture thereof. The manufacturing method of the present invention includes
(1) a step of preparing a sample composition containing (A) an ultraviolet protectant and (B) one or more humectants that have an IOB of 5.0 or lower and that are selected from among alkylene oxide derivatives and polyhydric alcohols; and
(2) a step of selecting a sample composition in which ultraviolet protection effects are increased after heat treatment in comparison to before heat treatment, in accordance with an evaluation method including the following steps (i) to (iv): (i) a step of forming a coating film of the sample composition on a substrate, (ii) a step of heat-treating the coating film of the sample composition, (iii) a step of measuring ultraviolet protection effects of the coating film of the sample composition that has not been heat-treated and of the coating film of the sample composition that has been heat-treated, and (iv) a step of comparing the measured ultraviolet protection effects.

公开(公告)号：US20200371027A1

公开(公告)日：2020-11-26

申请号：US16966276

申请日：2019-01-31

Applicant: Shiseido Company, Ltd.

Inventor： Kouichi NAGAI ,  Kei UJIMOTO ,  Marianne Ayaka TOUATI ,  Yuko NAGARE ,  Satoshi YAMAKI

IPC: G01N21/59 ,  G01N33/15

Abstract: The purpose of the present invention is to newly provide a method with which it is possible to appropriately evaluate the protective effect of an external preparation for skin such as a sunscreen cosmetic, particularly to evaluate how a UV-ray protective effect is affected by heat. This evaluation method is characterized by including (1) a step for forming a coating film of an external preparation for skin on a substrate, (2) a step for heat-treating the coating film of the external preparation for skin, and (3) a step for measuring the UV-ray protective effect of the heat-treated coating film of the external preparation for skin. The heat treatment is preferably carried out for at least one minute at a temperature of 30-70° C. The step for measuring the UV-ray protective effect preferably includes at least one selected from testing methods that involve comparing some kind of UV-ray protective effect with SPF measurement, UVAPF or PFA measurement, critical wavelength measurement, absorbance measurement, and transmittance measurement. This evaluation method can also be performed in vivo or in vitro.