Cosmetic's companies lead us all to believe that we need a closet full of products to turn back the clock. Reality tells us however that the clock is ticking, and you can do your best to take care of your skin, but don't waste your money on products that aren't necessary. A night face cream are a good example.
We've all heard commercials tell us that night face creams are formulated to penetrate your skin while it's regenerating itself during sleep. Night cream are usually more hydrating and a bit thicker in consistency than day facial moisturizers, and they do not contain SPF like many day creams do. But as long as you are applying a moisturizer at night, it doesn't matter if it's a day or a night cream.
If you wake up feeling a bit dry or you don't mind spending extra money, feel free to splurge on a night cream, but it is not necessary. If you're happy with your day cream, go ahead and use it at night.