14 BaByliss Pro Titanium Foil Shaver Foil shavers are electric razors that use oscillating blades shielded beneath a thin, perforated metal foil to provide a close, precise, and gentle shave, ideal for daily use and sensitive skin. These shavers typically feature straight heads with high-speed, back-and-forth cutting actions that capture hair through the mesh screen, and they are often preferred for shaving in straight lines, such as for sideburns or facial hair.