In order to manufacture the clothes we wear, things have to be pulled out of the ground. Plants for fibers, petroleum for technical fabrics. But a startup called Human Material Loop has a more sustainable idea: To create textiles out of human hair.

"Every day, hundreds of tonnes of hair clippings are thrown out," the company writes, on a section of their website addressing hair salon owners. "All the while, the textile industry is in dire need of a more sustainable, repurposed textile source. We have a solution for both – transforming your hair waste into textile fibers. Because ultimately, your hair clippings are just raw material in the wrong place."

The company reckons that human hair isn't just abundant, but the right material to make clothes out of:

"Human hair…possesses incredible durability and strength (one ponytail could hold two elephants). Like wool or alpaca, it's composed largely of keratin protein fibers, making it natural, thermal, biodegradable and moisture-regulating, sans the cruelty or allergic reactions."

The company claims they can turn hair into knits and weaves that are hypoallergenic, heat-retentive and antibacterial.

They also say they've produced a sweater, a "tweed-like blazer" and a parka insulated with human hair for testing. Currently they're gathering hair from salons in the Netherlands (where they're based), Belgium and Luxembourg.

It's a fascinating idea, assuming it works. And while they say they can dye the textiles they create, they don't mention from what specific source color of hair; I wonder if they can turn black hair into different colors. China and India have 3 billion people between them, and the continent of Africa another 1.2 billion; those populations have predominantly black hair and add up to more than half the planet's population. The hair textures of those populations are also distinct from that of the Low Countries from which the company has been sourcing their trial hair.

It will be interesting to see what different varieties can be produced from different populations' hair types (unless it's all the same after the lab process).