It's too late to warm it up without the powder right? Just don't overheat it, it may damage the compound. Put a pan of water on the stove, heat it until litle bubbles begin to form on the bottom of the pan, but don't let it get to a full boil, remove the pan from the burner, then put your bottle of carrier in the water for about 10 minutes. Then try the marble/ball-bearing trick, or the hand mixer. Do you have one of those long, single high-speed bladed, hand mixers? I think that would do it.
dd