Is the nail lamp not turning on, flickering, or stopping during use? To optimize the nail lamps performance, please kindly use the original adaptor to charge the nail lamp. Improper use of the power cord may result in product damage that leads to not working or flickering. Is the light dim during use? Check if all the light beads are working and check if the battery is low or drained. And dust or gel residue can also reduce the light intensity. Is the nail lamp not curing perfectly? For long-lasting results, it is normal to feel slight stickiness after curing the base coat and color gel. It will be sealed in with top coat. Please make sure each layer is fully cured before applying additional layer.