Tata Harper Bio-Barrier Serum is an anti-aging facial serum for sensitive skin. This incredibly silky all-in-one anti-aging serum smoothes, firms, and brightens skin to restore a healthy, radiant appearance. This repairing serum ultra delicate is perfect for reactive, stressed, sensitive or dry skin. The Bio-Barrier serum by Tata Harper It is hypoallergenic, dermatologically tested and vegan.