by Humankind

By Humankind leads with refillable personal care that cuts out single-use plastic completely. Since 2019, their deodorant uses a reusable case with replaceable sticks, mouthwash dissolves from tablets, and shampoo comes as bars—each product rethinking plastic's end. They've eliminated 10 million+ plastic containers. The refill model costs 20% less per use than conventional products, outperforming #10 Meow Meow Tweet's niche pricing by offering affordability at scale. This data-led approach makes sustainability cheaper, not premium.