Kids Playing With Slime
At Every Turn > Primary Care > Is homemade slime safe?
Tips Mar 21, 2017

Is homemade slime safe?

Michael O'Reilly, MD, Pediatrician

When I was a kid, I remember covering my hands in Elmer’s glue, waiting for it to dry and then peeling it off. Simpler times, I suppose. But it seems that Elmer’s glue is popular with kids again for something called homemade slime.

According to the news, homemade slime is the latest Internet DIY trend. It involves mixing white glue with water and Borax to make a squishy, stretchy, jiggly blob. It certainly looks fun, but is it safe?

Borax is a natural chemical that is found in a host of household products, including laundry detergent additives, cleaners, insect killers, herbicides and even some kinds of toothpaste. But just because it’s natural doesn’t mean it’s safe — there’s a reason it’s used to kill cockroaches.

Consider the risks

Borax can be lethal if ingested — less than 5 grams for a child and between 15-20 grams for an adult. Signs of exposure include red and peeling skin, seizures and kidney failure. Borax can also cause skin, eye or respiratory irritation. In rare cases, prolonged exposure can cause infertility or damage to an unborn child.

Now, the amount of Borax used in most homemade slime recipes is small (usually about a tablespoon, which is a little more than 14 grams) and it is diluted in water and glue. So, while the risk may be small, it’s not zero.

I’ve also seen some fans of homemade slime saying how it’s not meant to be eaten. That’s true, of course, but as any parent can tell you, when it comes to small children “not meant to be eaten” doesn’t mean much. I would urge parents to carefully consider the risks involved before making homemade slime.

In my mind, the biggest risk is in the making of the slime. You don’t want to leave your kids unattended with a box of Borax. So, if you do decide you want to try it, I’d definitely encourage you to make it with your kids. Once it’s made, the Borax is diluted enough where I wouldn’t have much concern about kids playing with it. Then, of course, put the Borax safely away with any other toxic household items.

That said, whether it’s homemade slime or something else, if your child does ingest any potentially toxic substance, call 911 or the Wisconsin Poison Center (1-800-222-1222) immediately.

Children's Wisconsin Resources

Children’s Wisconsin has more than 20 primary care offices conveniently located throughout the Milwaukee area and southeast Wisconsin. Find a pediatrician near you. View more articles from Michael O'Reilly, MD

Related stories

Benefits of gardening with your kids Children's Wisconsin
Tips May 28, 2025

Growing Up Green: The Many Benefits of Gardening With Your Kids

Caitlin Jacobs, MPH, RD, CD Clinical Dietitian

Gardening gets your kids outside, exposes them to a variety of foods and promotes their natural curiosity.

Understanding and addressing anxiety in kids Children's Wisconsin
Tips May 20, 2025

No More Worries: How To Manage Anxiety in Children

Tyler White, LPC Behavioral Health Consultant

While anxiety is a natural part of being human, it can be quite unpleasant to live with.

Skin cancer and melanoma in kids Children's Wisconsin Dermatology Program
Tips May 14, 2025

How To Protect Your Child From Skin Cancer

Valerie Carlberg, MD Dermatologist

Although childhood skin cancer is rare, protecting your child’s skin from ultraviolet radiation is critical for preventing long-term health consequences.

How to Cultivate Assertiveness in Your Child Children's Wisconsin
Tips May 05, 2025

How to Cultivate Assertiveness in Your Child

Rebecca Bons, PsyD Behavioral Health Consultant

Learning how to be assertive helps children build safe relationships, navigate conflicts and boost self-esteem.

What Are Obesogens and Do They Cause Weight Gain in Children? Children's Wisconsin
Tips Apr 16, 2025

Are Obesogens Causing Weight Gain in Children?

Pallavi Iyer, MD Endocrinologist

Obesity rates have more than tripled since the 1960s for both adults and children — but why?

Measles outbreak United States 2025 Children's Wisconsin
Tips Apr 16, 2025

Measles Outbreak Shows Importance of Getting Your Kids Vaccinated

Frank Zhu, MD Medical Director

The recent measles outbreak is a regrettable reminder to all of us of just how preventable this disease truly is when your child is vaccinated.

Beige parenting Children's Wisconsin
Tips Apr 02, 2025

The Rainbow Connection: How the Beige Parenting Trend Can Affect Children

Elizabeth Frantal, PA-C Physician Assistant

Beige parenting deviates from the bright colors and bold patterns that have dominated baby items for decades.