Marisa Berenson's Magic Potion
W's features editor swears by this beauty oil.
The 68-year-old golden goddess Marisa Berenson has tapped into the elixir of eternal youth—prickly pear oil. It forms the basis for her skincare line, which, until recently, was available only at far-flung Sofitel spas. Not that a trip to Marrakech sounds so bad.