Is Homemade Slime Dangerous?

borax, slime, science experimentIt is Science Fair season around these parts, and the parents … um, I mean the kids are working on their projects. Break out your baking soda and vinegar, break out your homemade circuitry, but you may want to leave the slime making to the experts.

Apparently, slime making has become the new fad on school playgrounds, with kids competing over who can make the best slime. Not only will this trend make your science fair slime less impressive, the main ingredient, Borax, is toxic in high concentrations. It can cause serious eye damage, is a skin irritant and has even been accused of teratogenicity and causing infertility. Of course, you likely are not eating it or spreading it on your skin. Like so many commonly used products, the potential danger in Borax is controversial, and the studies are done in mice who are exposed to very high concentrations. However, it does seem clear, it should be used by and around children only when it is diluted and only under supervision.

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For me, the potential danger makes a great argument to keep messy slime making out of my kitchen. Good luck with your volcano.

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Author: Karen Latimer

Dr. Latimer is a Family Physician and Wellness & Parenting Coach. She works with parents who want to feel more confident when helping their children and coaches young adults to help them better navigate college life and transitions. Contact her at to learn more. She is the author of two Audible Originals, Take Back the House -- Raising Happy Parents and Worry Less, Parent Better. She is also the co-founder of the app that makes your life easier and puts social in a healthier place -- List'm.