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Thus, haint blue was used with the intention of confusing these spirits and keeping people safe from any kind of harm. And how exactly would it do this? Well, It is a combination of the reasons previously discussed, specifically that blue is a symbol and resemblance of water and the sky.
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Boo Hags
The shade of blue was a potent protector as boo hags were believed to be unable to travel through water. On top of that, the boo hags would not go near the sky as their prey was on ground level. By painting the cleanings, shutters as well as glass bottles in haint blue- the residents and community at large thought they were protected.
Boo Hags
