With watchOS seven Apple has introduced the hand washing feature which tracks how long you are washing your hands to ensure that you are getting the recommended 20 seconds minimum. Unfortunately for Apple Watch owners of the series 1, 2 and 3, The hand washing feature is not available.
Thankfully a third party application called wash stuff is available for all Apple Watch’s running watchOS 6. Wash stuff helps you improve your hygiene habits using the voice activated timer using Siri or by adding it as a watch complication for quick access. Users can play your favourite song while you wash.
This application not only tracks your hand washing but also brushing your teeth and shower length times as well. The application has a customisable duration and Siri Shortcuts. You can download wash stuff free from here.