Is nail varnish safe on a light bulb?

No, applying nail varnish to a light bulb is not safe. Nail varnish is flammable and can pose a fire hazard when exposed to heat from the bulb. Additionally, it may cause the bulb to overheat or crack, leading to potential breakage and injury. It's best to keep nail varnish away from light bulbs and use appropriate materials for any modifications.