Time circle / Cap

The shelf life of eye drop for contact lens is pretty short which has only 3 months left after opening. Usually people can know the expiry date after it is made once easily, however it is hard for most people to know the expiry date after it is opened once and people often forget the opening time. It may cause adverse effect on our eyes directly if using the overdue drops.
Time circle provide a new effective solution which have several month marks on the cap. Users can strip the mark that stand for each month and tear off the notes as a record of the month when opening the cap.