Olaplex customers just filed a lawsuit alleging hair loss. See how other consumer suits have played out.

• Olaplex has been sued by customers who alleged its products damaged their hair and scalp.

• Companies like Thinx, P&G, and Unilever have set aside millions of dollars to settle consumer suits.
• Customers seeking vindication in court must deliver evidence and be strategic, lawyers said.

Olaplex was just sued by a group of more than two dozen customers who accuse the company of making false statements and allege problems like hair loss and scalp damage after using products by the TikTok-famous brand. Olaplex has denied their claims.