A Double Cleanse involves doing two cleanses of the face with your cleanser rather than simply doing once rinse.
A double cleanse is particularly important if you wear make-up, but is great practice for anyone. The first cleanse works to break down and remove your makeup or any pollutions or toxins from the day, however this cleanse is not enough to completely cleanse the face.
A second application of cleanser will work to penetrate deep into the pores and flush out any remaining bacteria, excess makeup build up, while also allowing the ingredients of the cleanser to absorb and treat the skin.
You can then follow with the rest of your skin care routine and sleep easy knowing you are going to bed with fully cleansed skin.