Cosmetic applicator
A cosmetic applicator may be capable of stably applying an application liquid without clogging the application member composed of a brush tip with particles contained in the application liquid. The front barrel may be made of a transparent material and the tip of the brush tip may be arranged to protrude from the front barrel through the front end opening of the front barrel while the brush tip is mounted inside the front barrel. A clearance may be formed between the front end opening of the front barrel and the brush tip, which allows the brush tip in the front barrel to also be deflected and deformed along with the deflection and deformation of the brush tip based on the application operation of the application liquid by the brush tip.
1 . A cosmetic applicator, comprising:
a barrel comprising a front barrel and a rear barrel;
an application member comprising a brush tip comprising a bundle of fibers on a front barrel side of the barrel;
an application liquid as a liquid cosmetic; and
an application liquid reservoir comprising the application liquid, disposed at a rear barrel of the barrel, and configured to supply the application liquid in the application liquid reservoir to the brush tip,
wherein the front barrel is made of a transparent material
wherein the brush tip is mounted within the front barrel, a tip portion of the brush tip being arranged to protrude from the front barrel through a front end opening of the front barrel,
wherein a clearance is formed between the front end opening of the front barrel and the brush tip, allowing the brush tip in the front barrel to also be deflected and deformed together with the deflection deformation of the brush tip due to the application operation of the application liquid with the brush tip, and
wherein the cosmetic applicator satisfies:
1
mm
≤
D
2
<
D
1
≤
3
mm
,
(
1
)
0.25
≤
D
3
,
(
2
)
D 1 being an inner diameter of the front end opening of the front barrel, D 2 being an outer diameter of the brush tip located at the front end opening of the brush tip, and D 3 =(D 1 −D 2 )/D 2 , and
(3) a ratio of areas, Sr=Sb/Sa, is 40%<Sr<95%. Sa being a cross-sectional area surrounded by the outer circumference of the brush tip at the outer diameter D 2 of the brush tip located at the front end opening of the front barrel, and Sb is the cross-sectional area of the hollow portion formed at the brush tip.
2 . The cosmetic applicator of claim 1 , satisfying:
0.27
≤
D
3.
(
2
)
3 . The cosmetic applicator of claim 1 , comprising a cosmetic comprising:
pearl pigment having an average diameter of 20 μm, in 4 wt. %;
glass flake having an average diameter of 30 μm, in 1 wt. %; and
glass flake having an average diameter of 20 μm, in 0.5 wt. %; and
a brown aqueous cosmetic having a viscosity of 5 mPa's at 50 rpm and a surface tension of 37 mN/m.
4 . The cosmetic applicator of claim 1 , comprising a black aqueous eyeliner cosmetic comprising
carbon black having an average diameter of 1,000 nm, a viscosity of 5 mPa's at 50 rpm, and a surface tension of 35 mN/m, in 8 wt. %.
5 . The cosmetic applicator of claim 1 , satisfying:
0.43
≤
D
3.
(
2
)
6 . The cosmetic applicator of claim 1 , wherein the brush tip has a hollow portion formed on a rear half side of the brush tip.
7 . The cosmetic applicator of claim 1 , comprising a liquid cosmetic.
8 . The cosmetic applicator of claim 1 , comprising a cosmetic comprising first brilliant particles having a major axial length in a range of from 10 to 50 μm.
9 . The cosmetic applicator of claim 8 , wherein the cosmetic further comprises second brilliant particles having a major axial length in a range of from 50 to 100 μm.
10 . The cosmetic applicator of claim 9 , wherein the cosmetic is a liquid cosmetic.
11 . The cosmetic applicator of claim 1 , comprising a liquid cosmetic comprising first brilliant particles having a major axial length in a range of from 10 to 50 μm, second brilliant particles having a major axial length in a range of from 50 to 100 μm, and water.
12 . The cosmetic applicator of claim 8 , wherein the first brilliant particles are present in a range of from 0.5 to 5 wt. %, based on a total cosmetic weight.
13 . The cosmetic applicator of claim 9 , wherein the second brilliant particles are present in a range of from 0.2 to 5 wt. %, based on a total cosmetic weight.
14 . The cosmetic applicator of claim 11 , wherein, based on a total liquid cosmetic weight,
the first brilliant particles are present in a range of from 0.5 to 5 wt. %, and
the second brilliant particles are present in a range of from 0.2 to 5 wt. %.
15 . The cosmetic applicator of claim 8 , wherein the first brilliant particles comprise pearl pigment.
16 . The cosmetic applicator of claim 1 , wherein the first brilliant particles comprise aluminum pigment.
17 . The cosmetic applicator of claim 1 , wherein the first brilliant particles comprise metal-coated glass.
18 . The cosmetic applicator of claim 1 , wherein the first brilliant particles comprise metal-oxide-coated glass.
19 . The cosmetic applicator of claim 1 , satisfying:
≤
D
2
<
D
1
,
(
1
)
wherein
D 1 is in a range of from 1.75 to 2.8 mm, and
D 2 is in a range of from 1.4 to 2.2 mm.
20 . The cosmetic applicator of claim 19 , wherein D 3 is in a range of from 0.25 to 0.40.