I don't understand why you can't just use a normal beauty sponge. It is the same thing and does the same job. I found myself using this as a less expensive beauty blender and didn't see the reason why you needed a separate sponge for blush.
I love all of these beauty blenders, especially this one, it makes my blush look more even and natural.
How did I not have one of these it's amazing and I'm so happy I got it