Borax is an ingredient on our slime…

What IS Borax?  Borax, also known (most predominately in the way we’re talking about right now) as sodium tetraborate, is a boron mineral and salt that’s mined directly from the ground.

Borax is not boric acid.

That’s where the majority of the online confusion appears. With no surprise; at least half of the studies done list their testing matter as “either sodium borate or boric acid.”

The difference between the two is: Boric acid is produced when borax is reacted with another acid (like sulfuric or hydrochloric acid). The result is an acid structure (pH of 5.0), rather than alkaline, as borax is (9.3 pH). No Acid is added to slime and therefor there is no acidic reactions.

Borax and boric acid are found together in many places, especially volcanic areas where the borax has naturally reacted with sulfur. You can also find both compounds in seawater. Considering what else ends up in our seawater, I’d say swimming in the sea is more dangerous to your health.

Is Borax Safe or Not?

In the ToxNet studies on the NIH website, there are very few that are concerning for any major danger (unless ingested in high quantities in powder form – particularly breathed in). In addition, the Material Safety Data Sheet lists borax as a health hazard of 1, the same as baking soda and salt.

Borax is classified as non-carcinogenic and a mild skin irritant. The high alkalinity of borax is likely what causes skin irritation (just as excessive use of baking soda would cause irritation). There are also several studies in the ToxNet database that show its only a very mild lung irritant and causes no lasting damage. In addition, it does not penetrate the skin well, and is not considered to be bio-accumulative. (Meaning, repetitive use over time does not mean it builds up in your system.)

Boron is an essential mineral that the body needs for bone building, immune function, and brain function. Plants need it to grow. But, like anything, it’s needed in small moderation. Much like salt.

Boron is found aplenty in borax. People even take borax as a supplement and swear by it (I am NOT recommending you do this). That’s a little extreme, but I use it as a gauge as to how harmful borax really is – check out Chinese herbal treatments!

Borax is wholly natural. It doesn’t cause cancer, accumulate in the body, or absorb through the skin. It is not harmful to the environment. In fact, the largest borax (borate) mine in the world – found in Boron, California – is considered by many to be the most ecologically sound and environmentally sustainable mine in the United States.

Make up your own mind, but we’re ok with it! Won’t have it in my tea, but will happily rub a tiny bit (only 0.2g of borax powder per jar of Wonder Slime) all over my hands!

By the way, our Wonder Slime does not need additional Borax supplied with the jars when you buy our Slime, it’s perfect already, so no need to be exposed to more than the tiny bit of Borax that we have already added.

Thanks for the info!