How to erase writing on paper without leaving traces

Toothpaste removes writing; squeeze a little toothpaste onto the writing, wait for a while and then wipe off the toothpaste with paper (or other things). You will be surprised to find that annoying handwriting disappears.

Remove the wording of toilet water; a bottle of toilet water, a tube of toothpaste, water, towels, and three express delivery receipts.

Steps

Step one: Pour water on the recipient’s name and address fonts on the first express delivery document, and wipe with a towel without any change.

Step 2: Apply an appropriate amount of toothpaste to the same position on the second express delivery receipt and wipe it gently with a towel. After a minute, the writing faded slightly but was still clearly visible.

Step 3: Pour an appropriate amount of toilet water on the same position on the third express delivery receipt and wipe it with a towel. A miracle happened. In 20 seconds, the writing on the receipt disappeared.

Conclusion

Toilet water is the best "artifact" to remove the fonts on express delivery documents. In a private experiment, the reporter did not use a towel, and the fonts on the documents would gradually fade away in about half a minute. Water and toothpaste can hardly make the writing fade away. AC

Answering doubts

Why does the font of toilet water disappear when it encounters express delivery documents? Chen Bin, a chemistry teacher at a middle school in Henan Province, explained that toilet water contains alcohol, which is an organic solvent, and the font code on the express delivery receipt is an organic matter. When the two come together, a chemical reaction occurs. "It can also be used to clean residual nail polish." Chen Bin added. However, Chen Bin also pointed out that the alcohol content of toilet water is not high, and it will not work if the alcohol content is high in liquor.

After dripping toilet water, the handwriting begins to become blurry

Wipe it slightly with a towel, and the handwriting disappears completely

There is also a simple and crude method I just put a small circle of transparent tape on it and then carefully peel off the words to print them, but it will damage the paper.