For graffiti that needs to withstand the elements and last longer, artists often choose markers that have waterproof and fade-resistant ink. Sharpie permanent markers, paint markers, and marker pens with waterproof and fade-resistant ink are all options that can provide longer-lasting marks that don't wash off easily. It's important to note that no marker is completely immune to fading or washing off, and the durability of the mark will also depend on the surface being marked and the environmental conditions it's exposed to. However, markers with waterproof and fade-resistant ink are a good choice for graffiti that needs to endure over time.