One must-use beauty product: The beauty product you should be using

We're guessing you've passed up an eye cream or two, browsing the beauty aisle for the next best thing, thinking, eh, I don't need that yet. If that's the case, we highly suggest you head to the closest drugstore, pick up an anti-aging formula, and start applying it religiously (aka every morning and night). 

Why? "The skin of the eye area is very different from most of the skin of the rest of the face," says Neal Schultz, M.D., a dermatologist in NYC and author of It's Not Just About Wrinkles: A Park Avenue Dermatologist's Program for Beautiful Skin—in Just Four Minutes a Day.
"It’s thinner, more sensitive, and has fewer oil and water glands, so it needs more moisturization. And while you can use your facial moisturizer there, it may not be rich enough."
Two more reasons to use an eye cream: to prevent and treat wrinkles.
Since we're constantly smiling (because we're happy), it causes the skin to crease repetitively, which eventually leads to wrinkles (ahem, crow's feet) over time. So, the earlier you start using an eye cream (20-year-olds, listen up!), the less fine lines you'll notice later on down the road.
If you're already starting to see the side effects of smiling or squinting (wear those sunglasses, girls!), these same preventative formulas can help diffuse some of the fine lines and even help decrease any crepey-looking skin around the eye (which can make you appear older than you are).
To find an eye cream that will: A. help prevent wrinkles, B. treat any you may already have, and C. moisturize the fragile eye area, Schultz suggests reading the ingredient label to see if the product contains the following:
- A less potent percentage (one percent) of glycolic acid, which promotes cell turnover, than what you'd use on the rest of your face.
- Peptides, which stimulate collagen production.
- Moisturizers like glycerin, urea, or hyaluronic acid, which help plump up fine lines temporarily.
Now, for a few formulas worth trying: 
- RoC Retinol Correxion Sensitive Eye Cream, $21, drugstore.com
- Philosophy Eye Hope Advanced Anti-Aging Eye Cream, starting at $40, Yahoo! Shopping
- Beauty Rx Skin Care by Dr. Schultz Gentle Exfoliating Eye Therapy Cream, $50, beautyrx.com
Use your ring fingertip to apply (since it's the least strongest finger), and pat a few dots of eye cream from the outer corner of your eye to right below your tear duct. Then, gently rub it into your skin using gentle inward sweeping motions, again only using your ring finger.
Will you be incorporating an eye cream into your beauty regimen stat?