Do not wash the treated area for at least 1 hour after applying Retin-A. Avoid the use of other skin products on the treated area for at least 1 hour following application of Retin-A. Keep the medication away from the corners of the nose, mouth, eyes and open wounds.
Definition of water closet. 1  1 : a compartment or room with a toilet. 2  2 : a toilet bowl and its accessories.
Water closet is a more precise term if you thing about it. It is a small room, closet-like. Not all have bathes in them, so bathroom is not that accurate. Nor is that the room you would go to rest, ruling out the term restroom. I once asked to use a friend' bathroom while visiting in Europe.