Comparative performance test between artificially aged and factory fresh shavers
Shave as closely as day one – 5 years on
Panasonic commissioned ipi Institute für Produkt-Markt-Forschung GmbH to conduct the objective measurements of the shaving quality with 3,5 and 5 years aged versus new shavers (tested model Panasonic ES-LV67). The study concluded that no differences can be found between the factory fresh and the artificially aged shavers in any of the conducted measurements: shaving time, closeness of shave, skin gentleness and skin irritation.
The results of the study are also applicable to ES-LV69, ES-LV97, ES-LV6U, ES-LV9U, ES-LS6A and ES-LS9A due to identical construction and materials (referencing to the shaver blades).
Aspects of the performance study
Ageing of the shavers' shearing foils, shaver heads and motors using ipi endurance test stand
Simulation of 3,5 years of daily use
Daily shaving time approx. 5 minutes x 360 days x 3,5 years
Overall usage hours = 105 hrs // equals 1.260 shaving cycles
Simulation of 5 years of daily use
Daily shaving time approx. 5 minutes x 360 days x 5 years
Overall usage hours = 150 hrs // equals 1.800 shaving cycles
Ageing of the shavers' plastic parts using a climatic chamber
Over a period of 100 hours, the shaver's plastic parts have been exposed to a constant temperature of 60°C.
Test set-up at the central location, ipi Institute
A panel of Panasonic and competitor brands premium electric foil shaver users (N = 28) shaved with both, artificially aged and factory fresh shavers, using the split face method.
Objective measurements of shaving time, (pre- and post shaving) closeness, skin gentleness and skin irritation on four designated spots: cheek, neck, chin, corner of the mouth.
All image rights belong to ipi Institute für Produkt-Markt-Forschung GmbH.
