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Thesedays, Many people use eye drops because have dry eyes and eye disease.
They are lack of awareness about eye drops direction
and expiration date instead of the amount increase
So , They use eye drops of over date or pollution.
This sticker which is visual to look expiration date was make to reduce these problem.
Ink which disapear contacted air be used in sticker that show
how left expiration date is and be passed.
Therefore, It is reminded to using eye drops people
Expiration date be showed that use Image of bar code, and Film was bear the sticker.
When start to use eye drops, remove the film.
And then people are checked oneself.
Hwaseong-si Gyeonggi-do, South Korea