Is it normal for my fingers to feel hot while the nail polish is curing?

Yes, a slight burning sensation is normal! This is because when ultraviolet (UV) or LED light is irradiated, the photosensitive components in the nail polish will react and generate heat. Especially when the nail polish is applied thicker or multiple layers are cured, the fingers will feel a little bit of heat or tingling. However, this burning sensation is generally mild and short-lived and will not cause harm to the skin. If you feel it is particularly obvious or lasts for a long time, it may be that the light exposure time is too long or the coating is too thick. It is recommended to: apply multiple layers of thin layers to avoid applying too thick a layer at a time; control the light exposure time according to the instructions and do not exceed the time limit; if your fingers are sensitive to light, you can choose a lamp with a slightly lower power or reduce the curing time.