CX Antiseptic Dusting Powder 15g CX Antiseptic Dusting Powder is for general skin disinfection & antiseptic use. Dust the affected part lightly up to 3 times a day.CX Antiseptic Dusting Powder kills a wide range of bacteria & yeasts & some fungi & viruses. It binds strongly to skin, mucosa & other tissues & is therefore poorly absorbed into the skin. It is used to kill micro-organisms that are found on the skin & thus prevent them from causing infection.