cleanse, tone, moisturize.
exfoliating is also important, it takes off all the dead cells.
i also like to, once a week, do a mask. i go for a cheap and effective one : just clay !
avoid green clay as it is harsh and more recommended for oily skins, try pink or white clays. they're more gentle. i just mix a tablespoon of clay with some water, apply and take it off after 10-15 minutes. you can also add some essential oils if you feel like it.
and if your skin's really dry, La Roche Posay has made individual masks (sold by two doses) in the hydraphase range. it is more for dehydrated than dry skins, but if your face really need moisture, go for it. each dose contains enough for your face and neck, and all you have to do is wait for 10 minutes, then take off some excess that hasn't been absorbed by the skin. they're also pretty cheap, 3-4$.