Avoid slime burns with these tips from a pediatrician By Pramod Narula, MD, Chairman of the Department of Pediatrics, NewYork-Presbyterian Brooklyn Methodist Hospital My three kids are obsessed with making slime out of glue and sodium borate (borax), but I’m concerned with how safe it is. I know that borax is a harsh cleaning agent, and I’ve read some horror stories online about children getting severe burns. How can I make sure that my kids are protected while they’re creating this popular gooey concoction? It’s true that many Do-It-Yourself recipes for trendy homemade slime call for three simple ingredients: water, glue, and sodium borate, also known as borax. Borax, a natural mineral, is used mostly as a cleaning agent, but it is used in slime making because of its binding qualities. Reports have found that borax may have the potential to cause eye, skin, and respiratory irritation. “Borax is a mild irritant, but generally considered safe,” said David H. Frankel, M.D., a derm..