In France alone, nearly 4,000 tonnes of hair end up landfilled or incinerated every year. Yet human hair has unique properties: it is not only highly resistant, it can also absorb hydrocarbons and protect forests from hungry deer. French recycling company Capillum is seeking to give our wasted locks a second chance, collecting cuttings across several European countries and transforming them into a biodegradable material. Our Down to Earth team reports.