Razor blade having an asymmetrical edge

A razor blade comprising:

• a substrate including a substrate tip, and a first surface and a second surface extending from the substrate tip;
• and
• a coating, layered on the substrate, including an ultimate tip, and a first cutting surface and a second cutting surface extending from the ultimate tip and corresponding to the first surface and the second surface, respectively,
• wherein the first cutting surface includes a first facet extending from the ultimate tip and a second facet extending from the first facet,
• the second cutting surface includes a third facet extending from the ultimate tip and corresponding to the first facet and the second facet,
• a first line tangent to the first facet and a second line tangent to the second facet are not parallel, and
• the third facet has a flat profile.

The razor blade comprising:

• a substrate including a substrate tip, and a first surface and a second surface extending from the substrate tip;
• and
• a coating, layered on the substrate, including an ultimate tip, and a first cutting surface and a second cutting surface extending from the ultimate tip and corresponding to the first surface and the second surface, respectively,
• wherein the first cutting surface includes a first facet extending from the ultimate tip and a second facet extending from the first facet,
• the second cutting surface includes a third facet extending from the ultimate tip and corresponding to the first facet and the second facet,
• a first line tangent to the first facet and a second line tangent to the second facet are not parallel, and
• a third angle between the first line and a central line that divides the substrate in two and passes through the substrate tip is different from a fourth angle between a third line tangent to the third facet and the central line.