Wake up skin's radiance with the vitamin C of 30 oranges in 1 bottle! This incredible serum delivers concentrated vitamin C, a powerful antioxidant, straight onto your skin for a boost of radiance instantly. In 1 week, skin looks and feels healthier*. In 2 weeks, skin looks smoother and more even*. After 5 weeks, an independent dermatologist study showed an improvement in overall photo damage, and an improvement in skin sagging and sallowness**. *Based on a consumer study with 135 participants. **Based on a clinical study with 20 participants.30ml How to use me: Apply 2-3 drops of this lightweight serum daily, before your day and night cream.