The absolute best vitamin c on this planet. C Esta has a more watery consistency and one pump will be plenty of product. It smells like orange Julius and I’m dying to have it in a perfume too. This scent comes from kiwi fruit extract, which is an antioxidant! I love that this vitamin c is the most potent form, ascorbyl palmitate, but it is non irritating! A common issue with vitamin c’s is they can irritate the skin. But this one doesn’t! C esta face serum also has a unique ingredients, DMAE that lifts and contours the face. It’s like a face lift in a bottle! Make sure you apply in upwards motions to get that face lift effect.