apropos by Bruno Cabral from portugal

“Apropos” is a adhesive film that changes it color. Contains 5 levels of times and it only begins its activity after glued on the product.
How many of us had already ate or drank something expired?
“Apropos” came to anticipate that problem. When a product is opened, it will be marked with this adhesive film, and according to the time of expiration of the product after it’s opening, it will change its color and indicate if the product is good for consumption or not.