Preserve razor blades are made from titanium-coated stainless steel in the case of the Shave 3 blade, and ceramic coated stainless steel in the case of the Shave 5 and POPi Shave 5 blades. The clip wires (on the ends of the cartridge) are manufactured using rolled aluminum. The aluminum is then coated with plastic so as not to come into contact with skin.