Flame time of a cigarette lighter to achieve temperature capable of inflicting a burn

Cigarette lighter burns are often blamed on non-intentional occurrences. At least 50 s of sustained flame is needed to heat typical cigarette lighter tops to temperatures capable of inflicting clinically visible skin burns. This time is longer than the time required to light a cigarette. Therefore, for a cigarette lighter to inflict a contact burn injury, there needs to be intent and preparation, making accidental cigarette lighter burns unlikely.