The cleaning cartridge for SmartClean systems helps you conveniently clean, lubricate and refresh your shaver, to keep it performing at its very best. The DualFiltration system cleans your shaver up to 10 times better than water. The Dual Filter system cleans hair, foam and gel. The unique double filter prevents hair from clogging your shaving heads. The alcohol-free, skin-friendly formula is designed to deliver a fresh and hygienic shave, while protecting against skin irritation. Includes two (2) cartridges, for up to 4 months of convenient cleaning and care.