IP Library › Granted Patent US 12678382
Granted Patent B2
US 12678382 · App. 18/563,721 · Granted Jul 14, 2026

Water-in-oil type emulsified solid cosmetic material

Inventor: Rina Yoshida (Tokyo, JP)
Assignee: SHISEIDO COMPANY, LTD.
A61K8/064A61Q1/02A61Q17/04A61K2800/592
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12678382
App. No.
18/563,721
Granted
Jul 14, 2026
Kind
B2
Abstract

The present invention provides a water-in-oil type emulsified solid cosmetic material excellent in stability and usability. The water-in-oil type emulsified solid cosmetic material according to the present invention comprises an oily component (A), an aqueous component (B), and a powder component (C). Then, the oily component comprises a polar oil component and a wax component, the wax component comprises an ester wax, a ratio of a total mass of the polar oil component to a total mass of the ester wax is 20 to 70, and a content of the polar oil component with respect to a total mass of the water-in-oil type emulsified solid cosmetic material is 9 to 30 mass %.

Claims (15)

1 . A cosmetic material which is a water-in-oil type emulsified solid cosmetic material comprising:

an oily component (A);

an aqueous component (B); and

a powder component (C),

wherein the oily component contains a polar oil component and a wax component,

the wax component contains an ester wax, a ratio of a total mass of the polar oil component to a total mass of the ester wax is 20 to 70,

a content of the polar oil component with respect to a total mass of the water-in-oil type emulsified solid cosmetic material is 9 to 30 mass %, and

a content of water with respect to the total mass of the water-in-oil type emulsified solid cosmetic material is 10 to 25 mass %.

2 . The cosmetic material according to claim 1 , wherein a content of the wax component with respect to the total mass of the water-in-oil type emulsified solid cosmetic material is 3 to 10 mass %.

3 . The cosmetic material according to claim 1 , wherein a content of the ester wax with respect to the total mass of the water-in-oil type emulsified solid cosmetic material is 0.1 to 1.8 mass %.

4 . The cosmetic material according to claim 1 , wherein a content of the ester wax with respect to a total mass of the wax component is 2 to 40 mass %.

5 . The cosmetic material according to claim 1 , wherein the ester wax is a plant-derived wax.

6 . The cosmetic material according to claim 1 , wherein a melting point of the ester wax is 50° C. to 100° C.

7 . The cosmetic material according to claim 1 , wherein the ester wax is carnauba wax.

8 . The cosmetic material according to claim 1 , wherein a rheometer hardness γ at 37° C. is 100 or less.