In our twenties, most people have combination skin, most likely with an oily T-zone and drier cheeks. It's important to hydrate, but don't forget that the T-zone needs special care, so Julie recommends a purifying mask once a week on this area only.
After cleansing (morning and evening), make sure you use a good, non-comedogenic moisturiser. Knowing your skin type is really important when it comes to choosing foundation. "Too many young women don't understand what kind of skin they have and use the wrong products," says Julie.