Meet your newest glow-booster -- an oil-free, concentrated vitamin c treatment for skin that targets dull complexions. Skin drinks up the lightweight formula immediately so you can layer on your favorite moisturizer and makeup without having to worry about pilling. The oil-free formula is a godsend for those who suffer from oily skin or frequent breakouts.

While most vitamin C face serums are applied in the morning (to protect skin throughout the day), this formula is best used at night. Containing a higher concentration of vitamin C than many other products -- 18 percent to be exact --this serum helps build collagen while you sleep while also repairing the skin from the damaging exposure it received during the day.

If fine lines and discoloration are messing with your complexion, add this vitamin C serum to your skin-care arsenal. InstaNatural Vitamin C Serum uses both hyaluronic acid and vitamin C to dually fight wrinkles and age spots in order to improve skin's overall tone and texture.

Patented Japanese seaweed encapsulation technology protects the vitamin C in this serum from exposure to light or oxygen -- both known to decrease efficacy --until it's applied directly to skin. Once applied, the tiny capsules burst open to drench your skin in good-for-you antioxidants. Definitely a more exciting way to apply vitamin C to your face.

If you're an urban dweller, you need some extra defense in the form of vitamin C for your skin. Pollution, cigarette smoke and other impurities can dull the complexion, but this serum is packed with valuable ingredients to fight off aggressors. Other than the obvious vitamin C serum benefits, this formula contains an exclusive skincare complex called EUK-134, fluid 02 which helps to carry much-needed oxygen into the skin, as well as soy proteins which can actually help convert those damaging free radicals into healthy oxygen.