How long a razor cartridge lasts varies from person to person, as it is dependent on many variables such as beard toughness and thickness, beard preparation, shaving habits, and skin sensitivity. The Gillette Fusion ProGlide Power's reformulated Indicator® lubricating strip will provide you with a visual cue - it fades to white - when optimal shave conditions have been reduced. When this happens, you may want to change your cartridge for a more comfortable shave. Gillette's research has demonstrated that single blade technology, which has been applied since 1901, is demonstrably inferior to twin blade shaving systems such as SensorExcel®, and even more so to 5-blade systems such as Gillette® Fusion® ProGlide™. But the number of blades alone does not ensure a superior shave. The 5-blade s.
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