It is perfectly normal for some warmth to be felt during the curing process, as this in indicative of the Gel Nail Polish turning from liquid form to solid form. Our Gel Nail Lamp’s have a low heat mode, specifically for sensitive hands. To use the low heat mode, press the ON / OFF button to switch the power from 48W to the 24W low-heat mode. You can then use for 0-99 seconds.Please make sure the Gel Nail Polish is applied in thin coats and is not on your skin, you are only using Gelous brand products, the nail plate is not damaged (from buffing too much, using chemicals without gloves, removing Gel Nail Polish incorrectly, not having a break between manicures, etc), your nails are in good condition.