Braun has the most advanced and convenient cleaning center on the market. As the inventor of the cleaning center, Braun has more than 10 years of experience in the area. This is why Braun is the only brand using alcohol-based cleaning fluid which eliminates 99.999 percent of all germs and bacteria in every cleaning process. Tests have shown that using the cleaning center is ten times more hygienic than simply rinsing it under tap water. A clean and renew refill cartridge needs replacing around 4 to 6 times a year and makes your shaver feel like new every day.