Banila Co. Dewy Puff

When you look at powders or pressed powders, you end up using a puff, right?

As many of you may already know,

They say it's good to change this puff often, too, haha.

There is only one puff included in each product, you know.

So I buy some refills in advance.

I've noticed that some people replace it periodically or wash it before using it.