This sponge has charcoal infused in it, to keep it more anti-bacterial. The charcoal also allows for the sponge to last longer and all around to just be better for your skin. Which is the part of this sponge i love, besides the fact that it doesn't suck up product!
Here's why it gets 2 stars. Like every sponge i've tried, including this one, it never fully dries! You are supposed to wash your sponge every use or ever other use to avoid acne, and to be sanitary (on clients - every use or prefereably a new sponge for each application.) I'd leave mine out 10 to 15 hours and it still wouldnt fully be dry! So what then happens is it causes mold. I did completely wring out the sponge and didnt leave it in a moist place. It feels dry, but when your sponge breaks, youll notice the inside is damp. Im not about that life. I prefer brushes for this reason. Plus the sponges say they last 3 months.. It doesn't, mine lasted a week before it broke and i was gentle with it! I dont get it..