Prevention magazine put the leading anti-aging beauty products to the test again this year and found seven products deserving of the “Defy Your Age” seal, including Olay ProX Age Repair Lotion, Neutrogena Norwegian Formula Age Shield Hand Cream and Estée Lauder Idealist Dual-Action Refinishing Treatment.

To determine the winners, Prevention enlisted seven leading dermatologists to test the claims of the 35 most promising products of the year on a group of 175 women, ages 40-plus, for a period of up to eight weeks. The doctors then employed state-of-the-art equipment to measure which products best delivered on their claims using before and after skin analysis. The teams investigated seven categories of products including hand, eye and night creams; lip, adult acne and microdermabrasion treatments; and day lotions with . This year’s winners are all available for less than $50.

Said Liz Vaccariello, SVP/editor-in-chief of Prevention, “A staggering number of beauty products are launched every year making it increasingly difficult for women to determine which ones they should invest in. We are proud to say that we put product claims to the test and found seven that truly deliver visible improvements—we saw wrinkles, brown spots and other over 40 skin issues disappear.”

Here is the complete list of Prevention’s “Defy-Your-Age” Beauty Award winners for 2009. A feature on the award winners, why they work and how to use them for best results can be found in the current issue of Prevention, on sale August 4th, or at http://www.prevention.com/beautyawards2009:

Best Day Lotion with SPF: Olay ProX Age Repair Lotion SPF 30: This lotion contains two powerful peptides that work to smooth fine lines and firm skin by speeding the production of new collagen. ($42; drugstores)

Best Night Cream: Roc Multi-Correxion Night Treatment: Includes multitasking ingredients like retinol and vitamin C, which smooth and firm skin and lighten discoloration. ($25; drugstores)

Best Lip Treatment: Lancôme L’Absolu Rouge La Base Revitalizing Lip Treatment SPF 10: Contains Pro-Xylane, a sugar molecule that boosts production of collagen and skin’s built-in moisturizers to plump lips and diminish fine lines. ($29; lancome-usa.com)

Best Microdermabrasion Treatment: Estée Lauder Idealist Dual-Action Refinishing Treatment: This skin polisher instantly boosts brightness, decreases pore size and smoothes skin thanks to salicylic acid, glucosamine and a blend of spherical beads. ($49.50; esteelauder.com)

Adult Acne Treatment: Avon Clearskin Professional Acne Treatment System: Unlike teenagers’ treatments, this trio of products—a scrub, a toner, and an oil-free lotion—contains humectants that soften and smooth. ($34; avon.com)

Hand Cream: Neutrogena Norwegian Formula Age Shield Hand Cream SPF 30: This cream smoothes fine lines and keeps hands soft with heavy-duty humectants and emollients; potent UV protection helps stave off future damage. ($6; drugstores)

Eye Cream: Skin Effects by Dr. Jeffrey Dover Cell 2 Cell Anti-Aging Eye Treatment: Made with hyaluronic acid, peptides and dermaxyl (a nonirritating synthetic retinoid), this cream decreases wrinkles, brown spots, and under eye darkness. ($15; CVS pharmacy)

You can log on to http://www.prevention.com/winbeauty  for a chance to receive all seven products—a $200 value.

Prevention’s Defy Your Age Beauty Awards Judges: Macrene Alexiades-Armenakas, MD, assistant clinical professor at Yale University School of Medicine; practices in New York City; Tina Alster, MD, clinical professor at Georgetown University; practices in Washington, DC; David Bank, MD, associate professor at Columbia University/Presbyterian Hospital; practices in Mt. Kisco, NY; David Goldberg, MD, clinical professor at Mount Sinai School of Medicine; practices in New York, New Jersey, and Florida; Ranella Hirsch, MD, past president of the American Society of Cosmetic Dermatology & Aesthetic Surgery; practices in Cambridge, MA; Mary Lupo, MD, clinical professor at Tulane University School of Medicine; practices in New Orleans; and Susan Weinkle, MD, assistant clinical professor at the University of South Florida; practices in Bradenton, FL.