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Even shallow paper cuts hurt intensely due to several biological and physical factors:

: At a microscopic level, paper edges are jagged like a saw, tearing the skin rather than making a clean slice. Even shallow paper cuts hurt intensely due to

: Tiny paper fibers and chemicals used in manufacturing (like bleach) can stay in the wound and irritate the dermis. Identifying a "Deep" Cut Paper Cuts: Why They Hurt, How to Treat Them, and More How to Treat Them