Raleigh-based Tethis is a step closer to commercializing a product that could revolutionize the diaper market by making it greener and reducing plastic waste that ends up in landfills. The startup announced a Series C investment of $17.5 million led by the Blue Hill Group (BHG) Wednesday.

The financing will enable Tethis to scale commercial production for products manufactured out of starches and other renewable feedstocks.