This cleaning cartridge for the SmartClean system, helps you conveniently clean, lubricate and refresh your shaver, to keep it performing at it's very best. The SmartClean system is the first system that quickly and effectively cleans shavers that were used with foam and gel. The active lubricant reduces friction and wear on blades, keeping your shaver in top shape. Dual Filter system cleans hair, foam and gel The Dual Filter system cleans hair, foam and gel. The unique double filter prevents hair from clogging your shaving heads, ensuring your shaver always performs at its very best. The DualFiltration system cleans your shaver up to 10 times better than water. The cartridge's skin-friendly liquid hygienically cleans your shaver and keeps it smelling fresh ever day. The alcohol-free, skin-friendly formula is designed to deliver a fresh and hygienic shave, while protecting against skin irritation.