NPR News: Cutting-Edge Research Shows How Hair Dulls Razor Blades

Cutting-Edge Research Shows How Hair Dulls Razor Blades
Hair is soft compared to steel, but shaving can dull a razor surprisingly quickly. A new study examines exactly how a strand of hair can chip and crack a sharp blade.

Read more on NPR
Làm đẹp Blog 247 August 7, 2020 at 01:00AM
Category Health & Science