It is well known in pop culture that vampires are unable to go in the sun. The sun burns their skin and can completely kill them if they are exposed enough. What We Do in the Shadows has gone to great lengths to show the dangers of the sun and to construct stories about the main cast that only take place at night. Yet, in Season 5, Episode 3 "Pride Parade," What We Do in the Shadows' Laszlo has finally uncovered a way that he can enjoy a day outside.
Source:https://www.cbr.com/what-we-do-in-the-shadows-sunscreen/