I received that pink teardrop shaped sponge pictured above in my February Birchbox. It's called a Beauty Blender. It is used for applying liquid foundation.
It's been years since I've used any kind of sponge to apply my liquid foundation. I remember hearing that it can absorb the product and therefore "waste" some of it, and I'm sure I stopped using it shortly thereafter. I have no idea if it actually absorbs enough to waste the product, but nonetheless, I switched to brushes.
I really like brushes. I also really like to use my fingers.
but now. . .
I really like the Beauty Blender. I read somewhere that it makes your foundation "look like it's airbrushed". I think thats actually true. The foundation goes on smoothly and evenly. And I don't have use a lot!
I was using the beauty blender dry until I actually read the directions and saw that you should wet it (but then squeeze it out really good), and then use it. I tap about a quarter size amount of foundation on the top of my left hand, then dot the beauty blender on it and apply it to my face.
I've been using it for about a week and only really used one section of it. I'm hoping to slowly work my way around so I use a "fresh" section each day. I'm curious to see how long it lasts!
So if you were looking for a new application method, or also received the beauty blender in your February Birchbox (lucky you), I'd highly recommend it.