A nail gel curing device can include an outer housing, a base, a dome and a detachable tray. The housing, base, dome and tray define an irradiation chamber, an opening to said chamber for inserting a hand or foot of a user, and a space between the dome and housing. The irradiation chamber suitable for curing five nails of a user's hand or foot and the dome including a plurality of light emitting diodes for curing nails positioned in the irradiation chamber, and the space being sufficient to accommodate electronic or electric circuitry to operate the plurality of light emitting diodes in the curing device. A shield can be slidably attached to the device and the shield can be capable of reducing the opening's size by sliding from an open to a more closed position, said closing diminishing a user's secondary exposure to UV light exiting the device.