Tag: invisible ink

Books Written With Disappearing Ink Self Destruct After 2 Months

Books Written With Disappearing Ink Self Destruct After 2 Months

These days when we write about traditional books, it's usually to showcase a way to recycle or reuse them. In a world where libraries are closing thei ...
How To Make Invisible Ink For Secret Notes [Chart]

How To Make Invisible Ink For Secret Notes [Chart]

When I was in high school, my friends and I used to pass notes during class all the time. They were usually about something silly like which boys we h ...
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