Abstract: Razor blade assembly (100), comprising in sequence an upper plate (110) with a radius of curvature RU; a first razor blade (120) of the thickness T1; a curved spacer member (130) with a radius of curvature RS; a second razor blade (140) of the thickness T2; and a lower plate (150) having a radius of curvature RL, wherein these elements can be reversibly assembled and mounted vertically in height on a razor handle (160); the first razor blade (120) and the second razor blade (140) have a generally rectangular shape and comprise a front cutting edge (121a, 141a) and a rear cutting edge (121b, 141b) running lengthwise; the first and second razor blades (120,140) in its unloaded state are curved in a cross-sectional plane orthogonal to the cutting edges; and the thickness T1 and T2 of the first and second razor blades (120,140) is at least 0.45 mm, and preferably at least 0.50 mm.