	US 12,156,926 B2
	Topical composition for nanobubble cosmetic
Hideki Kato, Kashiwara (JP); Takeo Yoneda, Kashiwara (JP); Seiki Hori, Kashiwara (JP); Hideki Nishiura, Osaka (JP); and Takahito Nakai, Osaka (JP)
Assigned to TOA Inc., Osaka (JP)
Appl. No. 18/029,864
Filed by TOA Inc., Osaka (JP)
PCT Filed Nov. 5, 2021, PCT No. PCT/JP2021/040809 § 371(c)(1), (2) Date Mar. 31, 2023, PCT Pub. No. WO2022/010000, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 2021-145577 (JP), filed on Sep. 7, 2021.
Prior Publication US 2023/0293394 A1, Sep. 21, 2023
Int. Cl. A61K 8/02 (2006.01); A61K 8/04 (2006.01); A61K 8/34 (2006.01); A61K 8/35 (2006.01); A61K 8/37 (2006.01); A61K 8/49 (2006.01); A61K 8/55 (2006.01); A61K 8/63 (2006.01); A61Q 1/14 (2006.01); A61Q 11/00 (2006.01); A61Q 19/10 (2006.01)

CPC A61K 8/0291 (2013.01) [A61K 8/046 (2013.01); A61K 8/34 (2013.01); A61K 8/345 (2013.01); A61K 8/35 (2013.01); A61K 8/37 (2013.01); A61K 8/4973 (2013.01); A61K 8/553 (2013.01); A61K 8/63 (2013.01); A61Q 1/14 (2013.01); A61Q 11/00 (2013.01); A61Q 19/10 (2013.01)]

1 Claim

1. A method for preparing a cleansing agent as a nanobubble cosmetic, the method comprising the steps of:

filling, with a topical composition, a container equipped with a device mechanism for generating nanobubbles, wherein the device mechanism includes:

a piston;

a piston guide;

a discharge port; and

a gap provided in the middle of a passage that communicates with the discharge port, arranged between the piston and the piston guide, wherein the topical composition passes through the gap between the piston and the piston guide and is discharged from the discharge port, wherein the gap provided in the middle of the passage that communicates with the discharge port causes the topical composition to undergo a shear crushing action to generate nanobubbles, and wherein the topical composition contains polyoxypropylene diglyceryl ether and ethoxydiglycol; and

generating nanobubbles in the topical composition with the device mechanism.