If the noise is lower, the AC service may be the cause. Magnetic fields from transformers can cause humming. Mains transformers typically cause an AC magnetic field around them. This magnetic field can be copled to wiring, electronics or signal transformers and cause humming.
Baby oil can be used for removing makeup. Pour a few drops of it on a cotton ball and gently wipe the makeup off your face. Rinse your hands, face with cold water, and dry the skin using a soft towel. Baby oil removes all of the makeup without harming your skin.
If your newborn is circumcised, gently clean the area with warm water, and if your baby's doctor recommends it, put a dab of petroleum jelly on the penis or on the front of the diaper for a few days to ease discomfort from friction against the diaper. You might also be advised to apply a new bandage on the penis during diaper changes for a few days.