Breaking the nail polish lamp may pose certain risks and impacts.

Firstly, the exposure temperature of nail polish lamps is relatively high. If a hand is broken and still subjected to exposure, it may stimulate the wound, causing adverse reactions such as pain, infection, and inflammation.

Secondly, ultraviolet radiation from nail lamps may accelerate skin aging, leading to problems such as dryness, roughness, and discoloration. Long term exposure may also increase the risk of skin cancer.

Therefore, it is recommended not to use a nail polish lamp for illumination when the hand is broken. If disinfection and sterilization are required, medical disinfectant alcohol or iodine can be used to wipe the wound. Meanwhile, if nail enhancement is required, it is also recommended to wait until the wound is completely healed before proceeding to avoid unnecessary damage to the skin.

In short, a broken hand using a nail polish lamp may have adverse effects on the wound and skin, so it is not recommended to use a nail polish lamp for irradiation when the hand is broken. If nail enhancement is required, it is recommended to wait until the wound is completely healed before proceeding.