Your Apple Watch can detect when you start washing and encourage you to keep going for 20 seconds, the time recommended by global health organizations. Your Apple Watch can also notify you if you haven’t washed your hands within a few minutes of returning home.
Turn on Handwashing
Open the Settings app on your Apple Watch.
Tap Handwashing, then turn on Handwashing Timer.
When Apple Watch detects that you’ve started washing your hands, it starts a 20-second timer. If you stop washing in fewer than 20 seconds, you’re encouraged to finish the job.
Receive Handwashing notifications
Apple Watch can remind you to wash your hands shortly after returning home.
Open the Apple Watch app on your iPhone.
Tap My Watch, tap Handwashing, then turn on Handwashing Reminders.