A vanity case, comprising: a case body for containing a cosmetic material; a lid for opening and closing an upper surface of the case body; a first hinge piece and a second hinge piece, each of the first hinge piece and the second hinge piece being formed in one of the case body and the lid; a hinge block formed in the other one of the case body and the lid and arranged between the first and the second hinge pieces; and a hinge pin inserted through the hinge block and the hinge piece to pivotably couple the lid with the case body, wherein a torsion spring is provided at the first hinge piece side for urging the lid so as to rotate in an opening direction by engaging the torsion spring with the case body and the lid; wherein a convex portion is formed in one of the second hinge piece and the hinge block facing to the second hinge piece, wherein a concave portion is formed in the other of the second hinge piece and the hinge block facing to the second hinge piece so that the convex portion can be inserted therein; wherein a friction member comprising an O-ring made of a rubber material or synthetic resin material, which is elastically deformable, is provided in the concave portion to brake the rotational speed of the lid due to the torsion spring by holding the friction member under pressure between the concave portion and the convex portion; wherein a protrusion is provided on one of an outer circumference of the convex portion and an inner circumference of the concave portion for braking the rotational speed of the lid by sliding contact with the other one of the outer circumference of the convex portion and the inner circumference of the concave portion; and wherein a recessed circumferential portion is formed between the outer circumference of the convex portion and the inner circumference of the concave portion so as to release the sliding contact of the braking protrusion at least at the closed position of the lid. a case body for containing a cosmetic material; a lid for opening and closing an upper surface of the case body; a first hinge piece and a second hinge piece, each of the first hinge piece and the second hinge piece being formed in one of the case body and the lid; a hinge block formed in the other one of the case body and the lid and arranged between the first and the second hinge pieces; and a hinge pin inserted through the hinge block and the hinge piece to pivotably couple the lid with the case body, wherein a torsion spring is provided at the first hinge piece side for urging the lid so as to rotate in an opening direction by engaging the torsion spring with the case body and the lid; wherein a convex portion is formed in one of the second hinge piece and the hinge block facing to the second hinge piece, wherein a concave portion is formed in the other of the second hinge piece and the hinge block facing to the second hinge piece so that the convex portion can be inserted therein; wherein a friction member comprising an O-ring made of a rubber material or synthetic resin material, which is elastically deformable, is provided in the concave portion to brake the rotational speed of the lid due to the torsion spring by holding the friction member under pressure between the concave portion and the convex portion; wherein a protrusion is provided on one of an outer circumference of the convex portion and an inner circumference of the concave portion for braking the rotational speed of the lid by sliding contact with the other one of the outer circumference of the convex portion and the inner circumference of the concave portion; and wherein a recessed circumferential portion is formed between the outer circumference of the convex portion and the inner circumference of the concave portion so as to release the sliding contact of the braking protrusion at least at the closed position of the lid.