this review title is: fast acting the cooling lasted about mins before room temperature was achieved and the content is: hola due to the salicylic acid there is a limit as to how many times to apply each hours i would take two acetaminophen apply kens best sportarub and sleep hard for minutes i will purchase again cuidate cl.there are other information for this review, one is this reviewer did purchase it and the other is 0 people think this review is helpful.