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.
Oil has helped make many fond childhood memories of drawing inside a classroom or a home. Each and every crayon in a child's Crayola box consists of paraffin wax, a waxy solid made from petroleum. Paraffin wax also happens to help make candles, and may even provide the polish on an apple or the glossiness of chocolate.