A must-have addition to your overnight skincare routine if you're prone to sensitive skin. The high caffeine content in Black Tea works to gently firm skin whilst also helping fade blemishes, reduce pigmentation, and soothe irritation.. The Science. • Black Tea Extract is known to be loaded with antioxidants that help protect skin from UV damage and environmental pollutants. Its higher content of caffeine means it's an excellent ingredient for tightening and toning the skin.. • Hyaluronic Acid aims to penetrate deep into the skin to nourish and instantly help improve the appearance of fine lines and wrinkles.. • Shea Butter is rich in antioxidants, high in Vitamins A and E, and works as an emollient to keep your skin young and supple.