A razor with a shaving aid, comprising a blade body assembling portion provided with a blade support, which supports a blade body, and a shaving aid, wherein the blade support has an attachment portion, to which the shaving aid is attached, the shaving aid is protruded from the attachment portion in a protruding direction as a vertical direction, wherein the protruding direction of the shaving aid is orthogonal to a thickness direction of the shaving aid, which is a front-back direction, and is along an extending direction of a cutting edge of the blade body as a left-right direction of the cutting edge or a direction orthogonal to the extending direction of the cutting edge, the shaving aid itself is provided with a deformable portion, which is deformable along with contact with a skin surface during use, and the deformable portion has a protruding edge portion, which is exposed to the outside in the protruding direction of the shaving aid, wherein in the deformable portion of the shaving aid, front and back surfaces (26, 27) are exposed in the thickness direction and the front surface is continuous with the protruding edge portion on a front side of the razor, and the cutting edge of the blade body is exposed in the blade support on the front surface in the thickness direction, and the back surface is continuous with the protruding edge portion on a back side, which is opposite to the front side, and is exposed in the thickness direction, wherein the blade body assembling portion includes a placement portion, the placement portion supports the back surface of the deformable portion, and the placement portion is protruded from the attachment portion of the blade support, wherein the placement portion is integrally protruded from attachment portion and the placement portion is provided with a band portion extended from the attachment portion on either side in the extending direction of the cutting edges, and a retaining hole is formed along the band portion between the band portion and the attachment portion, and a protrusion inserted and attached in the retaining hole is molded to the deformable portion, and an end face of the protrusion is exposed to the back side of the placement portion, wherein a holder has a grip portion and a top portion located at an upper end of the grip portion, the blade body assembling portion is attached pivotally to the top portion, and of a front side of the top portion facing the back side of the blade support, which is opposite to the front side of the blade support, and a back side of the top portion, which is opposite to the front side of the top portion, the top portion is curved from the front side to the back side with respect to the grip portion, characterized in that a radius of curvature of the front surface of the deformable portion is set to range from 5 to 20 mm. the blade support has an attachment portion, to which the shaving aid is attached, the shaving aid is protruded from the attachment portion in a protruding direction as a vertical direction, wherein the protruding direction of the shaving aid is orthogonal to a thickness direction of the shaving aid, which is a front-back direction, and is along an extending direction of a cutting edge of the blade body as a left-right direction of the cutting edge or a direction orthogonal to the extending direction of the cutting edge, the shaving aid itself is provided with a deformable portion, which is deformable along with contact with a skin surface during use, and the deformable portion has a protruding edge portion, which is exposed to the outside in the protruding direction of the shaving aid, wherein in the deformable portion of the shaving aid, front and back surfaces (26, 27) are exposed in the thickness direction and the front surface is continuous with the protruding edge portion on a front side of the razor, and the cutting edge of the blade body is exposed in the blade support on the front surface in the thickness direction, and the back surface is continuous with the protruding edge portion on a back side, which is opposite to the front side, and is exposed in the thickness direction, wherein the blade body assembling portion includes a placement portion, the placement portion supports the back surface of the deformable portion, and the placement portion is protruded from the attachment portion of the blade support, wherein the placement portion is integrally protruded from attachment portion and the placement portion is provided with a band portion extended from the attachment portion on either side in the extending direction of the cutting edges, and a retaining hole is formed along the band portion between the band portion and the attachment portion, and a protrusion inserted and attached in the retaining hole is molded to the deformable portion, and an end face of the protrusion is exposed to the back side of the placement portion, wherein a holder has a grip portion and a top portion located at an upper end of the grip portion, the blade body assembling portion is attached pivotally to the top portion, and of a front side of the top portion facing the back side of the blade support, which is opposite to the front side of the blade support, and a back side of the top portion, which is opposite to the front side of the top portion, the top portion is curved from the front side to the back side with respect to the grip portion, characterized in that a radius of curvature of the front surface of the deformable portion is set to range from 5 to 20 mm.