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    Transparent composition and transparent cosmetic
    1.
    发明授权
    Transparent composition and transparent cosmetic 有权

    公开(公告)号：US11413234B2

    公开(公告)日：2022-08-16

    申请号：US16606802

    申请日：2018-04-12

    Applicant: SHISEIDO COMPANY, LTD.

    Inventor： Kayoko Naoi ,  Kouichi Nagai

    IPC: A61K8/81 ,  A61K8/02 ,  A61K8/25 ,  A61K8/37 ,  A61K8/44 ,  A61K8/73 ,  A61K8/88 ,  A61Q17/04

    Abstract: A transparent composition having UV protection effect is provided, wherein the UV protection effect is improved after the composition is contacted with moisture, such as water or sweat, more than that immediately after the composition is applied, while maintaining high transparency. The transparent composition contains (a) a UV absorbent, (b) an oil component having a refractive index in the range from 1.5 to 1.7, (c) an oil component having a refractive index of not less than 1.3 and less than 1.5, and (d) a powder having a refractive index in the range from 1.45 to 1.55, wherein a mixed oil component obtained by mixing the (b) oil component having a refractive index in the range from 1.5 to 1.7 and the (C) oil component having a refractive index of not less than 1.3 and less than 1.5 has a refractive index in the range from 1.44 to 1.56.

    Cosmetic preparation
    2.
    发明授权
    Cosmetic preparation 有权

    公开(公告)号：US11638686B2

    公开(公告)日：2023-05-02

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

    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.

    Cosmetic product
    3.
    发明授权
    Cosmetic product 有权

    公开(公告)号：US12161740B2

    公开(公告)日：2024-12-10

    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.

    Method for evaluating protective effect against external damage to skin
    5.
    发明授权
    Method for evaluating protective effect against external damage to skin 有权

    公开(公告)号：US11474038B2

    公开(公告)日：2022-10-18

    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: G01J3/00 ,  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.

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