The degradation of human or animal hair is a slow process governed by environmental conditions. Keratin, the primary protein composing hair, is notably resistant to decomposition due to its tightly packed structure and the presence of disulfide bonds. This inherent stability means that hair persists longer than many other biological materials in various environments.
Understanding the persistence of hair has significant implications in forensic science, archaeology, and environmental studies. In forensic investigations, hair samples recovered from crime scenes can provide valuable clues, even long after an event. Archaeologically, hair found in well-preserved contexts, like tombs or frozen ground, can offer insights into past populations’ diets, health, and lifestyles. Environmentally, the breakdown of hair contributes, albeit slowly, to nutrient cycling in ecosystems.
