Quench thirsty skin with the Pai Skincare Back to Life Hydration Serum. Ideal for dull, dehydrated skin, the best-selling serum is like a glass of water for the complexion. At the core, hyaluronic acid, jojoba and antioxidant-rich berries deliver a burst of moisture, supporting a smoother, more supple appearance. Its gentle composition makes the serum suitable for sensitive skin.