5 Pairs of Hyaluronic acid needle patch for wirnkles, fine lines, dark circle, and puffiness. To get the best result, recommend to apply at lest 2 hours overnight time. After each treatment, let your skin to rest for about 1~2 weeks. Then repeat the treatment for continuous improvement and prevention of further wrinkle. Since the skin cell cycle is 28days, wrinkle can reform when the resting phase is more than a month. Use the patches properly considering your personal skin condition.