Ever since the firstGrand Theft Auto 6trailer released last month, fans have spent almost every waking minute tearing it to pieces for new info. That’s how we know most of it ismade up of real-life events, and how we have theories such asthe balcony girl in the bikini being the main character in disguise, and the inclusion ofan ankle monitor that could potentially limit early game exploration.

Now that the bones of the trailer have been well and truly picked clean, fans are turning their attention to more ridiculous discoveries to pass the time until 2025. For example, one fan recently set about proving what SPF sunscreen is being used by a certain NPC on the beach in the opening 20 seconds of the trailer. First reported byPC Gamer, a fan by the name of Ficerc posted their giant essay about this topic to the GTA subreddit, complete with graphs and mathematical equations.

The Vice City Beach and City in GTA 6

To start with, Ficerc set about determining the skin tone of the woman using the sunscreen, as the color of a person determines what SPF sunscreen you need for protection. To do this, they bust out the Fitzpatrick Skin Score table and figured out a series of mathematical equations to make it fit an information table about SPF by sunscreen brand Banana Boat.

After determining the woman’s skin tone, Ficerc then went about figuring out the time of day in the trailer, as the length of time you spend in the sun determines the strength of sunscreen that you need. to figure this out, Ficern used the length and location of the shadows that beach goers are casting, along with a map of the real-life Miami Beach and a sun path diagram to determine the location of the sun.

With this info, they figure out that the sun is setting, as well as the angle of the sun with trigonometry. They then cross-reference this information with a sun path diagram and the average UV dosage of the sun at certain times, to finally determine that the SPF sunscreen the lady on the beach should be using is 8-14 SPF. Truly astonishing.

It’s worth noting that this is an extremely trimmed down version of what Ficern put together, and you should check out the full Reddit post to see all of their workings, because it’s a level of commitment to a bit that you can only sit back and respect. All I know is that if you want to avoid sunburn on your next trip to the beach, Ficern’s definitely the person to go to.