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.