Coloplast Micro-Guard Antifungal Powder is an antifungal powder with 2% Miconazole Nitrate. Micro-Guard is made with a smooth, corn starch formula that is intended to treat fungal skin infections caused by yeast (Candidiasis), jock itch, ringworm and athlete's foot. Micro Guard powder is easier to apply than creams and it doesn't leave any oily residues behind.