After a person dies, their nails and hair continue to grow.
Hair and nails don't actually grow after death because growth requires biological processes powered by living cells. What occurs is dehydration causing the skin to shrink and recede, making nails and hair appear longer. This is a purely mechanical change, not biological growth.
Reception
Sources
- Postmortem Changes - Forensic Medicine PRIMARY
- Snopes: Hair Growth After Death REFERENCE