A razor cartridge comprises a first blade support and a second blade support. Each of the first and second blade supports include a flat portion having an inner surface which faces away from a shaving surface S. A first blade is attached to the inner surface of the flat portion of the first blade support, the first blade includes a first cutting edge. A second blade attached to the inner surface of the flat portion of the second blade support, the second blade includes a second cutting edge. A distance between the first and second cutting edges is within a range of 1.6 mm to 2.2 mm.

A razor blade having a substrate with a cutting edge being defined by a sharpened tip is provided where the substrate is comprised of a molybdenum (Mo) content of about 1.6% to about 5% by weight of composition and thicknesses of 1.60-1.75 μm and 9.25-10.00 μm measured at a distance of 4 and 40 μm from the blade tip, respectively. This thickness ratio is between 0.165-0.185. The substrate thickness is about 2.70-3.00 μm at 8 μm from the blade tip, about 4.44-5.00 μm at 16 μm from the blade tip with a thickness ratio measured at 4 μm and 8 μm between 0.56-0.62, and a thickness ratio measured at 4 μm and 16 μm between 0.32-0.40. The edge shape may be defined by equation w=ad.sup.n with “a” between 0.50-0.62 and “n” between 0.76-0.80. A semi-included angle less than 7° is measured at a distance of 40 μm or greater from the blade tip. This substrate will have substantially no cracks.

One embodiment of a dual sided razor comprises a handle and a cartridge attached to the handle, the cartridge further comprising a first shaving side and a second shaving side, the cartridge being switchable relative to the handle between the first and second shaving sides.

A razor blade is provided comprising a substrate comprising a first portion and a second portion. The first portion may comprise first and second generally parallel outer surfaces. The second portion may comprise first and second sections separated by a split line. The first section may comprise a first facet extending directly from the first outer surface of the first portion and an end facet extending directly from the first facet. The second section may comprise an end facet. The end facets of the first and second sections may converge at a tip to define a cutting edge. The split line may pass through the tip and is generally parallel with and extends between the first and second outer surfaces of the first portion.

Methods and apparatuses for an intelligent shaving system is disclosed herein. An example intelligent shaving system includes a handle, at least one blade connected to the handle, a microcontroller attached to the handle, a wireless communication unit configured to send and receive data from microcontroller to an external device, a memory configured to store data applicable to the at least one blade, and one or more sensors configured to send sensory data from the one or more sensors to microcontroller. The one of the one or more sensors is a proximity sensor or a camera having image sensor configured to capture video and/or still images. The shaving system assists in determining blade attrition and provides indicators to assist in shaving techniques. The shaving system further may include at least one blade slightly curved to follow a tangent of the skin. The at least one blade may have a nanolattice structure.

A razor blade cartridge includes: a housing: a razor blade fixedly mounted in the housing including: an edge that is elongated in a direction orthogonal to shaving direction, the edge includes a cutting edge formed in a single arch and opposing rear and front faces, wherein the cutting edge extends along a longitudinal direction which is orthogonal to shaving direction; a connection portion extended and bent from the edge toward a direction orthogonal to the longitudinal direction and orthogonal to the shaving direction, the connection portion having faces continuous with the front and rear faces of the edge respectively; and a support portion extending from the connection portion in the direction orthogonal to both the longitudinal direction and the shaving direction, the support portion supporting the edge and the connection portion, the connection portion and the support portion are a single body.

One embodiment of a dual sided razor comprises a handle and a cartridge attached to the handle, the cartridge further comprising a first shaving side and a second shaving side, the cartridge being switchable relative to the handle between the first and second shaving sides.

A hair cutting tool includes a shaped supporting body for a handle and having a gripping element for laminar bodies; a cutting blade having a laminar body provided with a single bevel and a cutting edge defining a concave development line toward the inside of the laminar body.

Disclosed here are shaving razor systems and methods including razor cartridges with a unitary frame having a length and width, a topside and an underside, wherein the unitary frame includes angled joints or bends connecting at least three guards running lengthwise on the unitary frame, the guards separated by at least three gaps in the frame, and at least three blades, affixed to the underside of the guards of the unitary frame, wherein the at least three blades include edges, and wherein the blade edges extend into the gaps in the frame when affixed to the underside of the guards of the unitary frame.

Replaceable shaving assemblies are disclosed that include a razor cartridge having a blade geometry that is designed to provide a close, comfortable shave. Shaving systems including such shaving assemblies are also disclosed, as are methods of using such shaving systems and methods of manufacturing these cartridges.