Coloplast Micro-Guard - Antifungal Powder is a non caking corn starch based powder.Micro-Guard powder treats fungal skin infections caused by yeast (Candidiasis), jock itch, ringworm, and athlete's foot. This antifungal powder can be easier than cream to apply and does not leave behind a mess. Active ingredient: 2% Miconazole Nitrate. Size: 3 oz bottle.