- Who
- Macie Davis-Southerland
- What
- 18.400 centimetre(s)
- Where
- United States (Tracy)
- When
The longest arm hair (female) is 18.40 cm (7.24 in), and was achieved by Macie Davis-Southerland (USA), in Tracy, California, USA, on 5 December 2023.
Macie mentions that she first noticed the long hair growing out of her arm as a teenager, since then it has either fallen out or been pulled. The hair has now been growing long and strong since 2020.