Does the Infant-thingy have a date of expiration? Clek July 13, 2020 21:29 Updated Follow No, the Infant-thingy has no expiration date. Related articles How do I clean and care for my Infant-thingy insert? Do I need to replace the Infant-thingy if involved in a collision? When should I discontinue using the Infant-thingy? Can I use both the car seat headrest and Infant-thingy head support at the same time? Comments 0 comments Article is closed for comments.