# US 8,539,962 B2 · Cosmetic for eyelashes > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,539,962 B2 - Document ID: US8539962B2 - Status: Granted - Kind: B2 - Application number: 12/851,635 - Filed: 2010-08-06 - Published: 2010-12-16 - Granted: 2013-09-24 - Earliest claimed: 2010-01-21 - Assignees: Shiseido Company, Ltd. - Applicants: Takuma Kurahashi; Katsuyuki Kaneko - Inventors: Takuma Kurahashi; Katsuyuki Kaneko - Web page: https://patentgrep.com/patent/US8539962B2 ## CPC - A61K 8/027: {Fibers; Fibrils} - A61K 8/0279: {Porous; Hollow} - A61K 8/88: Polyamides - A61Q 1/10: for eyes, e.g. eyeliner, mascara - A61K 2800/41: Particular ingredients further characterized by their size - C08L 2203/12: used for fibers - A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D) - A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract The present invention is a cosmetic for eyelashes characteristically comprising modified cross-section hollow fibers. What is preferable is a cosmetic for eyelashes characteristically containing said modified cross-section hollow fibers that are polygonal cross-section hollow fibers having depressions so they can orient along the eyelashes wherein the length of the hollow fibers is 0.5-4 mm and the size is 20-50 μm. The object of the present invention is to provide a cosmetic for eyelashes that exhibits a superior curling effect and long lash effect and allows a beautiful finish. ## Claims ### Claim 1 A mascara cosmetic composition for application to eyelashes, said mascara cosmetic composition comprising: 0.5-8 wt % of hollow fibers having a length of from 0.5-4 mm and a diameter of 20-50 μm, said fibers having a modified pentagonal cross-section represented by a pentagon that allow the hollow fibers to be oriented along an eyelash with each side of said pentagon having an arch shaped depression along each side of the pentagon, wherein the mascara cosmetic composition suppresses transverse orientation of said hollow fibers to the eyelashes and facilitates orientation of the hollow fibers along a length of the eyelashes, thereby improving a long lash effect. ### Claim 2 (depends on 1) The mascara cosmetic composition for application to eyelashes of claim 1, wherein said hollow fiber is formed from a synthetic fiber that can be made hollow. ### Claim 3 (depends on 1) The mascara cosmetic composition for application to the eyelashes of claim 1, further comprising 1-30 wt % of a wax. ### Claim 4 (depends on 1) The mascara cosmetic composition for application to the eyelashes of claim 1, further comprising 1-25.0 wt % of a film forming resin. ### Claim 5 (depends on 1) The mascara cosmetic composition for application to the eyelashes of claim 1, further comprising 0.1-30 wt % of a thickener. ### Claim 6 A mascara cosmetic composition comprising: 0.5-8 wt % of hollow fibers having a length of from 0.5-4 mm and a diameter of 20-50 μm, said fibers having a modified pentagonal cross-section represented by a pentagon that allow the hollow fibers to be oriented along an eyelash, having an arch-shaped depression along each side thereof; 1-30 wt % of a wax; 1-25.0 wt % of a film forming resin; and 0.1-30 wt % of a thickener, wherein said mascara cosmetic composition suppresses transverse orientation of said hollow fibers to the eyelashes when applied thereto, and facilitates orientation of the hollow fibers along a length of the eyelashes, thereby improving a long lash effect. ### Claim 7 A mascara cosmetic composition for application to eyelashes, said mascara cosmetic composition consisting essentially of: 0.5-8 wt % of hollow fibers having a length of from 0.5-4 mm and a diameter of 20-50 μm, said fibers having a modified pentagonal cross-section represented by a pentagon that allow the hollow fibers to be oriented along an eyelash, having an arch-shaped depression along each side thereof, wherein said mascara cosmetic suppresses transverse orientation of said hollow fibers to the eyelashes, and facilitates orientation of the hollow fibers along a length of the eyelashes, thereby improving a long lash effect. ### Claim 8 (depends on 1) The mascara cosmetic composition of claim 1, wherein the length of the modified cross-section hollow fibers is 2-3 mm. ### Claim 9 (depends on 6) The mascara cosmetic composition of claim 6, wherein the length of the modified cross-section hollow fibers is 2-3 mm. ### Claim 10 (depends on 7) The mascara cosmetic composition of claim 7, wherein the length of the modified cross-section hollow fibers is 2-3 mm. ### Claim 11 (depends on 1) The mascara cosmetic composition of claim 1, wherein the hollow fibers have a diameter of 30-40 μm. ### Claim 12 (depends on 6) The mascara cosmetic composition of claim 6, wherein the hollow fibers have a diameter of 30-40 μm. ### Claim 13 (depends on 7) The mascara cosmetic composition of claim 7, wherein the hollow fibers have a diameter of 30-40 μm. ### Claim 14 (depends on 1) The mascara cosmetic composition of claim 1, further comprising 0.1-30 wt % of a coloring material. ### Claim 15 (depends on 6) The mascara cosmetic composition of claim 6, further comprising 0.1-30 wt % of a coloring material. ### Claim 16 (depends on 7) The mascara cosmetic composition of claim 7, further comprising 0.1-30 wt % of a coloring material. ### Claim 17 A mascara cosmetic composition comprising: 3.0-6.0 wt % of hollow fibers having a length of from 2.0-3.0 mm and a diameter of 20-30 μm, said fibers having a pentagonal cross-section represented by a pentagon having an arch shaped depression along each side thereof; wherein said mascara cosmetic composition suppresses transverse orientation of said hollow fibers to the eyelashes when applied thereto, and facilitates orientation of the hollow fibers along a length of the eyelashes, thereby improving a long lash effect. ### Claim 18 (depends on 17) The mascara cosmetic composition of claim 17, further comprising: 1-30 wt % of a wax; 1-25.0 wt % of a film forming resin; 0.1-30 wt % of a thickener; and 0.1-30 wt % of a coloring material.