Set the timer to 155 seconds

Online timer for 155 seconds

Back for a second round of sunscreen, you have 155 seconds to cover the places that were easy to miss the first time. A high NIWA UV index can turn a quick top-up into a practical pause before gardening, walking to the dairy, or heading back onto the beach. Use the repeat to check ears, the back of the neck, hands, and any skin newly exposed after changing layers.

While you smooth out the second application, a silent device keeps the moment discreet around sleeping children, shared offices, or a quiet changing room. Keep the screen where its movement remains visible, because muted alerts may not be obvious when your hands are occupied. A vibration setting can provide a physical cue without adding noise, though the phone should stay clear of lotion and damp towels.

For this second pass, a phone usually suits the job when you are outside or moving between the bathroom and the door; it can remain close enough to glance at without interrupting the application. A laptop is more useful when it is already open on a kitchen bench and its larger display can be seen from across the room. Whichever screen is used, let the interval mark a careful check rather than rushing to fill every remaining moment.