Do i need to apply moisterizer on my face after putting cetaphil oily skin cleanser on?

Yes: You should apply a toner and a moisturizer every time you wash your face. If your face is oily, you should use a thin moisturizer (more of a lotion than a cream). Not using a moisturizer can cause your face to produce more oil in an attempt to keep your skin from being too dry. The toner helps to restore pH balance after washing so that the moisturizer can be absorbed.