Creme-Based Cosmetics, how are they effectively used?

I don't understand his. Sponge wouldn't work unless the consistency of what you're using is very hard. If that's the case, I would try to warm it or make it softer by taking your index finger and swirling it into the product with the part that makes a finger print. You can also take a little glob and swirl it on the back of your hand. If a sponge doesn't work, your hand should work just fine and then you can go back over with a sponge to soften lines and blend everything. As any cream or wet product, I would set it with a powder.