What happened with Lash Lure eyelash dye in the 1930s?

• A. It improved vision
• B. It caused corneal ulceration leading to blindness due to an untested product
• C. It was a safe product
• D. It was never marketed

Answer: (B)

Key idea: safety testing matters, especially for products used near the eyes. Lash Lure, an eyelash dye from the 1930s, was marketed without proper safety data. When people used it, the dye could cause severe eye damage, including corneal ulcers and sometimes blindness, because the product hadn’t been tested for ocular toxicity. This case underscored the dangers of releasing cosmetics without safety information and helped push regulations requiring safety testing before products could be marketed. The other statements don’t fit because the dye did not improve vision, was not proven safe, and it did enter the market and cause harm.