The best overall blade edge for a hair stylist is _____, because it will give you the smoothest cut and is the sharpest edge possible.

• A. Concave
• B. Hollow-ground
• C. Convex
• D. Beveled

Answer: (C)

Edge geometry determines how cleanly a blade cuts and how long it stays sharp. A convex edge is formed by grinding on both faces to create a gently curved outer surface, which makes the edge very strong and durable. That strength translates into a consistently sharp cut that glides through hair with minimal snagging, giving the smoothest result. Hollow-ground or concave edges, while initially razor-sharp, have a thinner apex and can dull or chip more quickly with daily salon use, and they’re harder to maintain. Beveled edges introduce a different profile that can grab hair or leave a rough feel. For everyday hairstyling, the convex edge provides the best combination of sharpness, resilience, and smooth cutting, which is why it’s the best overall option.