My wife was recently exposed to a large amount of powdered Borax when we were treating our house to get rid of fleas. The next day after vaccuming up a lot of Borax, she began to notice her hair falling out in large amounts.

I have done some research, and it seems that some articles point to Borax as a cause for hair loss, but many also list it as an ingredient in treating hair loss and in making homeopathic shampoos. Is it safe in smaller quantities, but dangerous in large amounts?

And most importantly, if the Borax is the cause, is the condition reversable?

Thank you for any help.

-Tim