OSEA Malibu was formulating seaweed skincare in California in 1996, years before anyone called it clean beauty, and took no outside money for more than two decades. Then a body oil found TikTok, sales grew 115% in 2020, and the brand walked into Ulta, Nordstrom and Mecca on its own terms. This year it turns 30, sells more than US$100 million a year and has General Atlantic on the cap table, while the mother and daughter who built it still hold the brand and the formulas.

Drunk Elephant was once synonymous with clean beauty, built on a 'Suspicious Six' exclusion list and a 'skincare smoothie' ritual that carried it from zero to an $845 million price tag. But after Shiseido acquired it, TikTok virality brought in young teens and pushed out the adult, high-spending users who made it. Stockouts, recalls, and a 65% quarterly sales slide slowly turned it into a case study of a big-group integration gone wrong.

Most 'clean beauty' brands market on aesthetic. Tower 28 turned three independent medical-association seals into a moat: NEA, National Rosacea Society, and National Psoriasis Foundation. The Sephora-exclusive brand doubled sales in 2024 and became the retailer's highest-productivity brand. Inside Amy Liu's six-year operator playbook for building unfalsifiable consumer trust.