The first dupe I tried was the Sonya Kashuk Blending Sponge from Target. It retails for just over $10 and it looks like this:
The problem is that when you get it wet, it still looks like that:
It does get a little bigger, mostly just wider. But for the most part, it doesn't really change size and it doesn't really change texture. The sponge is very dense and rubbery. The end result is that you're trying to apply product with what feels like a giant pencil eraser.
This product was a complete waste of money for me.
Sonya Kashuk Blending Sponge Overall 0/10.
Next up, I decided to try the CVS Essence of Beauty Precision Blender Sponge. It retails for $4.99.
Dry, it looks like this:
For comparison, here is it wet next to one that's still in the package:
I really prefer applying my foundation with a buffing brush, but if I had to use a sponge, it would be the Essence of Beauty Precision Blender Sponge.
CVS Essence of Beauty Precision Blender Sponge Overall: 10/10