Sunlight

Sunlight is one of the most well-known weaknesses of a vampire in the real world and in fiction.

Effects
If a vampire is in fact, exposed to sunlight, their skin will begin to burn severely, then slowly incinerate, and eventually disintegrate into ashes. This happens because the sun is one of the main things that symbolizes life and nature in the world, making it a true weakness to vampires, who are unnatural undead beings.

Immunity
Despite serving as a weakness to vampires, vampires are able to walk through the day unharmed by wearing sunlight rings. Sunlight rings are created by the use of magic, and it takes a skilled practitioner of magic to create a sunlight ring. Vampire lords are inherently immune to sunlight, as well as Dhampirs who possess none of the weaknesses of a vampire.