Oily cosmetic

• US 10,639,268 B2
• Filed: 07/28/2015
• Issued: 05/05/2020
• Est. Priority Date: 07/28/2014
• Status: Active Grant

• Current Assignee: Shiseido Company Limited
• Original Assignee: Shiseido Company Limited
• Inventors: Fujiyama, Nozomi, Yoda, Yukie, Miyazawa, Kazuyuki, Ide, Nobuyuki
• Primary Examiner(s): Lazaro, Dominic
• Application Number:
  US15/329,081
• Publication Number:
  US 20170224608A1
• Time in Patent Office: 1,743 Days
• Field of Search: None
• CPC Class Codes: A61K 2800/31 Anhydrous
• CPC Class Codes: A61K 8/73 Polysaccharides
• CPC Class Codes: A61K 8/86 Polyethers
• CPC Class Codes: A61K 8/90 Block copolymers A61K8/89 takes precedence
• CPC Class Codes: A61Q 1/10 for eyes, e.g. eyeliner, mascara

Abstract

The present invention provides an oil-based cosmetic that can easily be washed out with warm water and is excellent in water resistance. The oil-based cosmetic of the present invention is characterized by comprising (a) to (c):

• • (a) 1 to 25 mass % of a block-type alkylene oxide derivative represented by the below-described formula (I)
  • (b) 1 to 15 mass % of a siliconized pullulan and/or trimethylsiloxysilicic acid
  • (c) 10 mass % or less of water
    R¹O—[(EO)_p(PO)_q(EO)_r]—R²  (I)

(In the above formula, EO is an oxyethylene group and PO is an oxypropylene group. The symbols p, q, and r are the average addition mole numbers, and they are p≥1, r≥1, 10≤p+r≤70, and 10≤q≤60. R¹ and R² are either identical or different and they are either a hydrogen atom or a hydrocarbon group having 1 to 3 carbon atoms.)

Claims

1. An oil-based cosmetic, comprising:

(a) 1 to 25 mass % of a block-type alkylene oxide derivative having a chemical formula (I)

R¹O—

[(EO)_p(PO)_q(EO)_r]—

R² 

 

(I)

wherein EO is an oxyethylene group and PO is an oxypropylene group;

p, q, and r are average addition mole numbers;

wherein p≥

1, r≥

1, 10≤

p+r≤

70, and 14≤

q≤

60 ;

R¹ and R² are methyl;

(b) 1 to 15 mass % of tri(trimethylsiloxy)silylpropylcarbamyl pullulan and trimethylsiloxysilicic acid;

(c) at most 10% by mass of water;

(d) 10 to 80% by mass of at least one volatile oil;

(e) 1 to 20% by mass of at least one wax;

(f) 1 to 15% by mass of at least one dextrin fatty acid ester; and

(g) 1 to 10% by mass of at least one organic-modified clay mineral;

wherein the cosmetic is removable from skin by washing out with water having a temperature in the range of 35°

C. to 45°

C.

2. The oil-based cosmetic according to claim 1, further comprising trimethylsiloxysilicic acid.

3. An oil-based eyelash cosmetic comprising:

a cosmetic according to claim 1.

4. An oil-based eyelash cosmetic comprising:

a cosmetic according to claim 2.

5. A makeup method comprising:

a step of applying a cosmetic according to claim 1 on a skin, and

a step of removing said cosmetic by washing out with water;

wherein the temperature of said water is in a range of 35°

C. to 45°

C.

6. A makeup method comprising:

a step of applying a cosmetic according to claim 2 on a skin, and

a step of removing said cosmetic by washing out with water;

wherein the temperature of said water is in a range of 35°

C. to 45°

C.

7. A makeup method comprising:

a step of applying an oil-based eyelash cosmetic according to claim 3 on an eyelash, and

a step of removing said cosmetic by washing out with water;

wherein the temperature of said water is in a range of 35°

C. to 45°

C.

8. A makeup method comprising:

a step of applying an oil-based eyelash cosmetic according to claim 4 on an eyelash, and

a step of removing said cosmetic by washing out with water;

wherein the temperature of said water is in a range of 35°

C. to 45°

C.