Dr Plant Alpine Black Tea Firming & Wrinkle Relieving Series - "The Dual Resistant Secret" This series features Yunnan Alpine Black Tea as its core ingredient, which promotes collagen synthesis in the skin, firms contours, and reduces wrinkles. It repairs damaged skin barriers and stabilizes the skin's condition. Additionally, it contains dual resistance factor and carnosine, which can block the glycation of collagen, firming and rejuvenating the skin, and improving dullness, roughness, and lack of radiance. Furthermore, it includes niacinamide, which is key to brightening the skin and reducing pigmentation.