Mascara comb

A mascara comb for applying mascara liquid to user's eyelashes and combing the eyelashes, comprising

• a comb portion having an upper surface formed as a convex-shaped curved surface having a first curvature radius, a first curvature edge and a second curvature edge, and a lower surface having a second curvature radius smaller than the first curvature radius of the upper surface, a third curvature edge and a fourth curvature edge, the first curvature edge contacting the third curvature edge and the second curvature edge contacting the fourth curvature edge;
• wherein
• on the upper surface a plurality of protrusion elements are disposed so as to form multiple rhombus structures;
• when a deviation distance from the upper surface is given as a height, a cross-section of each of the protrusion elements in a direction orthogonal to the height direction forms a circle;
• each of the rhombus structures is configured so as to form a rhombus with a diagonal line in an axial direction of the comb portion longer than a diagonal line in an orthogonal direction orthogonal thereto, and a linear gap extending in the orthogonal direction, for applying the mascara liquid to the eyelashes while combing the eyelashes;
• further, the rhombus structures are a velocity adjustment portion functioning as a velocity adjustment mechanism for making the velocity with which mascara liquid flows in the axial direction slower than the velocity with which the mascara liquid flows in the orthogonal direction;
• and
• in the upper surface, the inside of the rhombus structures is a holding portion having a function of holding the mascara liquid;
• an open region where none of the protrusion elements are disposed is formed on the upper surface, includes a center position in the orthogonal direction, has boundaries in the axial direction and the orthogonal direction defined by a plurality of the protrusion elements, and encompasses an area larger than the area encompassed on the upper surface by at least one of the rhombus structures;
• and
• the linear gap for applying the mascara liquid to the eyelashes while combing the eyelashes is formed by the protrusion elements defining the boundaries, and
• the eyelashes is capable to come into contact with the open region pass through the linear gap;
• the open region is configured from a plurality of portion regions;
• the portion regions have disposed alternatingly a region with a relatively wide width in the orthogonal direction and a region with a relatively narrow width;
• and
• a linear segment connecting center portion vicinity locations in the orthogonal direction bends.