Zinc oxide and dimethicone combine to provide a moisture barrier to protect the skin from external moisture, while miconazole nitrate treats fungal infection.. Can be used to treat such conditions as superficial yeast infections (candidiasis), athlete's foot (tinea pedis), ringworm (tinea corporis) and most jock itch (tinea cruris).. There is 113.4 grams of antifungal cream in a tube..