It will get as dirty as anything else exposed to dirt, but white obviously shows it more easily than anything else. Read How to clean and use your Apple Watch - Apple Support and scroll down to For all other straps, buckles and clasps Leads have been great. I think I washed it maybe once to sweat a bit and it's still nice and white. Dirt will get as dirty as anything else, but white shows it clearly more easily than anything else.
The cleaning process is simple, which is good news. How to clean and use your Apple Watch: Apple Support scroll down to “For all other bands, buckles, and clasps. When you use a leather Apple Watch band regularly, it can get damaged and dirty over time. Using a cloth and soapy water is an easy way to clean the skin.
However, you should be careful not to cause any water damage. It's also essential to allow the skin to air dry overnight. All Apple Watch bands will get dirty over time. Dust, food, sweat, lotions and more can affect the look of your watch band.
How often an Apple Watch band needs to be cleaned depends on your situation. We recommend cleaning as needed, but at least once every 2 weeks. Leather is another seemingly difficult material to see, but keep in mind that many traditional watches have similar straps. If you're wondering how to clean a white Apple Watch band and make it look like new, there's one trick that isn't approved by Apple.
The texture of the band makes it easy to get dirty over time, especially if you're wearing it during Apple workouts. When deciding how to clean your Apple Watch band, consider following Apple's official instructions. While many Apple Watch users use them for swimming, it's not recommended since woven nylon isn't water resistant. This is true for cleaning any Apple device, including a MacBook and iPhone, as well as other accessories such as transparent phone cases.
It is possible to place the belt in an ultrasonic cleaner, but it is important to research which solvent is safe for stainless steel. If you bought your band from someone else, you may need a different care (not all watch bands are the same).