The size is huge, so it will last a long time.
I use it to clean my make up (rub it around your face for a normal amount of time) and it works.
If I want to do a really deep pore cleansing routine, I would rub it around my face for a minimum of 5 minutes and you can literally see the dirt coming out. And my pores doesnt feel clogged after (I used this method with other brands, they did not do this).