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In 1955, we put shampoo in plastic. In 2025, we’re taking it out. Meet the Stem Shampoo Bar by Swell Labs. Engineered with zero water, zero plastic, and zero compromise. Each bar is packed with salon-quality ingredients—crafted to cleanse, nourish, and refresh your hair and body. It lasts longer than four bottles of liquid shampoo, and it’s wrapped in a biodegradable beeswax shell that vanishes without a trace. Swell Labs didn’t just make a better shampoo. We redesigned the shower from the ground up.