Cutting blade with a concave bevel and hair removal device

A hair removal device comprising a cutting blade, the cutting blade comprising:

• a blade body comprising or consisting of a first material and a second material joined with the first material, the cutting blade having a first face, a second face opposed to the first face, and a cutting edge, wherein:
• the first face comprises a first surface
• the second face comprises a primary bevel having a convex or straight cross-sectional shape and a secondary bevel having a concave cross-sectional shape with
• a first line connecting the primary bevel and the secondary bevel
• the primary bevel extending from the cutting edge to the first line,
• the cutting edge and the primary bevel are shaped in the second material
• a first wedge angle θ1 between the first surface and the primary bevel or the tangent of the primary bevel through the cutting edge,
• a second wedge angle θ2 between the first surface and the tangent of the secondary bevel, and wherein θ1>θ2.