Oval frame razor

A blade unit housing for use in a safety shaving assembly, comprising:

• a frame defining an aperture configured to receive and support a razor blade carrier;
• and
• a skin contacting surface surrounding the aperture and including skin-engaging forward and rearward surfaces, the skin-engaging forward surface being in front and the skin-engaging rearward surface being at the rear of the frame, and the aperture located between the forward surface and the rearward surface,
• the aspect ratio of the length to width of the skin contacting surface being in the range of from 1:1 to 2.8:1, said shaving assembly during shaving being substantially inflexible over a major longitudinal dimension,
• the skin contacting surface having a circumscribing perimeter confining a footprint area of at least 450 mm2, the forward surface having an area of at least 140 mm2 within the footprint area and being at least about 18.6% of said footprint area, and
• the circumscribing perimeter being so shaped that the footprint area confined by said perimeter has a circularity, wherein circularity (C) is a ratio between the area (A) of a shape enclosed by its perimeter (P) to the length of the perimeter as defined by the relation C=A/P2×4 π×100, not less than 70%.