シャーロット・ケンプ・ミュールのインスタグラム(charlottekempmuhl) - 5月6日 03時43分

Lemon-juice invisible ink helped defeat Napoleon, and was the go-to for spies in the American Revolution, the Civil War, and World Wars I and II. British counterespionage agents apprehended a cadre of undercover German “lemon juice spies” funneling information to the Fatherland “in lemon. Its acid essentially weakens the fibers of paper so when held over a flame- those areas would turn brown first. Wearing @For Love & Lemons 🍋

[BIHAKUEN]UVシールド(UVShield)

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