Daktarin dual action cream powder and spray powder all contain the active ingredient miconazole miconazole is an antifungal medicine used to treat infections with fungi and yeasts daktarin dual action spray powder is useful for ensuring treatment gets right between the toes as well as for treating the whole foot it can also be sprayed inside shoes and socks the spray powder can also be used regularly on the feet and inside shoes and socks to help prevent athlete39s foot coming back