Dry or Sun-Damaged Skin:
You should use products that moisturize or contain hyaluronic acid, a natural sugar that draws moisture into the skin. Try any of the DERMAL masks, but I recommend the DERMAL Hyalourate Collagen Essence Mask Sheet! Remember to apply sunscreen before you go out!
Regular, Sensitive or Combination (part oily, part dry) Skin:
You should not use a cleanser because it can dry out your skin; however, if you do use one, make sure it's very mild. Make sure to apply a sunscreen before going out, I suggest at least SPF30.
Before going to bed, you can apply a gentle moisturizing face mask sheet that does not contain alcohol. For regular or combination skin, I recommend any of the CLEARDERM Essence Mask Sheets.
For sensitive skin, I recommend the 12 precious herbal face mask sheets, Bidanpo Mediental or the dermatologist tested Beauty Clinic masks. People with sensitive skin seem to always have to pay a bit more for their skin care products.
I know I would buy the dermatologist tested products if my skin needed it! (^_^)
You should have a good cleanser that you use often, maybe 3-5 times a week. Look for cleansers that have glycolic or salicylic acid. Make sure you use an "oil-free" type of sunscreen.
Night time cleansing is a must because your skin has been exposed all day and has probably gotten more oily. For oily skin, I recommend exfoliating by using peel-off masks like the Cucumber Deep Cleansing Peel-Off Mask or the Green Tea Deep Cleansing Peel-Off Mask.
Your nighttime regime should include a wash-off mask at least 3-4 times a week like the Skin Brightening Natural Pearl Mask, Anti-Stress Heat Therapy Oatmeal Mask, Strawberry Skin Softening Yogurt Mask or the Hydro Soothing Aloe Wash-Off Mask.