Designed for Gel Polish: This UV lamp is specifically engineered for curing gel nail polish. It is not suitable for traditional nail polish Smart Sensor & Adjustable Timers: The built-in smart sensor activates the lamp automatically when your hand is placed inside, no manual operations needed. Choose from 8s, 30s, 60s, or the 120s automated setting for different curing needs Optimal Curing Results: Apply gel polish in thin layers to allow even UV light penetration and ensure full curing. It's normal for the base coat and color gel to remain slightly tacky after curing. This tackiness will disappear once the top coat is applied and cured Curing Time Guidance: Standard gel polish usually cures within 30 to 60 seconds, but darker colors, like black, may require a longer curing time Customer Service: If you encounter any issues while using the product, please don’t hesitate to reach out to us. We’re here to help GAOY Fast Curing Nail Lamp Professional Salon-Graded UV LED Nail Curing Light with Powerful 30 LED Beads and Automatic Infrared Sensor 3 Timers for Gel Nail Polish Acrylic Gel Nail Dryer