Beauty blender is a sponge make up applicator that is basically used instead of a brush. I use it to apply my foundation and concealer. This is a great product for contouring as well since it does an amazing job blending the different shades.
They are a bit pricey however trust me that it is nothing like the $2 dupes in drug stores.
They last about 3-4 months depending on how often you use it and how well you will take care of it!
There is a beauty blender cleanser however I choose to wash it with dish soap because it really cleans well and smells great 🙂
Before using the sponge, make sure to squeeze it about 10 times under running water (it will get bigger) then squeeze out the water and dab it a few times on a dry towel and begin the magic!