How do you make snaps last longer in Snapchat?

Snapchat now lets you set your snaps to last longer or indefinitely on the recipient's side; how do you change the setting?

You can change how long a snap lasts by tapping on the timer after taking a snap. Scroll down and choose from 1 to 10 seconds or choose the infinity symbol for you snap to last forever (until dismissed by the recipient).

How to make Snapchat snaps last longer.
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