Stitches

Stitches are a Muggle remedy for various wounds, which involves sewing bits of skin back together.

When Arthur Weasley was brought to St Mungo's Hospital for Magical Maladies and Injuries after he was attacked by Nagini in 1995, Augustus Pye, a trainee Healer, suggested trying stitches to heal Arthur's wounds. This attempt ended up fruitless, as Nagini's fangs had a poison in them that dissolved the thread.