Blade Advertising

Where can I find the Razors that are advertised that don’t need blades changed?

Silly question I suppose BUT recently on T.V. I saw one of those ads for Men’s Razors that claimed one need NEVER change the blades. I can’t seem to find it now AND of course since I’m looking It hasn’t been on T.V. again. They look like the typical Gillette Razors BUT require NO blade changes…?????

Blades operate via friction; as the blade cuts through a material, the blade itself dulls due to the friction from slicing through the material being cut. Better-made blades made from strong materials will minimize the dulling, but no material blade is capable of cutting through any material without some loss to the blade’s sharpness – it’s not physically possible.

I suppose one could have a theoretical blade made of energy, but such a blade would require a power source, and it would be ill-suited for shaving as it would bring a new dimension to the expression “razor burn.”

TV ad – Barclays Bank – 1980s SF Blade Runner (Stracey)