You're probably familiar with glittery cases like these. At least, there's a good chance you are. The US Consumer Product Safety Commission says around 263,000 of them have been sold in the US between October 2015 and June 2017. The sparkly, sparkly cases are the subject of a massive recall because the cases are causing serious chemical burns to users.
The Commission says 24 people worldwide have reported chemical burns caused by the iPhone cases. The burns occur when the liquid inside the case leaks out. Those shimmery stars aren't suspended in water. It's a chemical that can cause intense pain when it comes in contact with skin.
Of the 24 incidents, 19 have occurred in the US. According to the recall, one person suffered "permanent scarring from a chemical burn" and another experienced chemical burns and swelling on "her leg, face, neck, chest, upper body, and hands."