If you're a lazy girl like I am, but still want beautiful skin with the help of masks, here is one good alternative: The Face Shop Aqua Drop Pack. The Face Shop is a korean brand that is internationally known. This product is essentially a sleeping mask (meaning you put it on before you sleep and you remove it once you wake up). It is a cheaper alternative for Laneige's Water Sleeping Pack Ex. which is quite pricey indeed.

From the brand's international website, here is a description of the mask:
An oil-free type of sleeping mask that gives instant moisture to skin with aqua drop massage which features
Aqua Drop Massage
- Moisture shine Improves blood circulation
Moisture Ingredients (Hyaluronic Acid / Mannitol)
- Provides moisture and anti-oxidant effects
Lavender
- Calms nerves, induces sleep

I highly recommend this product because especially during winter, cold weathers make me skin dry so this gives back the skin's lack of moisture :D