As someone who's been making Her Majesties, moguls and mega-models look younger for longer than some of us have been wearing makeup, Dr. Sebagh knows how to make the most of anything. Case in point: vitamin C in its freshest, finest, most absorbable and potent form — so your skin gets the strongest dose of free-radical protection possible. Mix this pure C powder with Dr. Sebagh Crème Vital or your own moisturizer and watch your skin brighten and tighten.