Well darn, that is a bummer, Jan but good to know. Thank you!
OK - borax in drinking water does have a detox effect.
Sadly, the research is very thin on the ground, but the chemical reaction looks like this:
Borax reacts with fluoride ions to form boron fluorides
When taken internally, yes, these fluorides are excreted in your urine, which is detoxing.
In the bath, boron fluorides are apparently inert. It does not apparently react with chlorine (bummer). BUT - I've been reading about ancient treatments for everything, and all toxicity was treated with salt. So having a salty bath might bind and improve the chemical profile. But be gentle - like seawater.
You know, how good it would be for arthritis and inflammatory conditions to bathe in seawater daily? Well similar, only recreating it in the bath. If I were you, always have salt in the bath. (Iodine also binds to fluoride, but I think that's mostly internally, I couldn't find anyone who put iodine in the bath. It's a detox protocol, and may be why some people react to iodine. Ergo - maybe not iodized salt!)
If you think about it, fluoride is measured in ppb (parts per billion) - so it wouldn't take much boron to neutralize that.
Logically, you would stir the bath well. I bought an old ping-pong paddle for stirring the bath - I wanted an oar, but couldn't find one at the secondhand shops!
ACV, Apple Cider Vinegar or ascorbic acid - I've seen recipes for that too - but I can't tell the facts from the fanatics on that one. It's helpful, I use it to help the absorption of the magnesium - but I don't trust it to handle the fluoride - otherwise we'd all have a bottle at table, and put drops of it in our water. We don't (but iodine is still used to purify water).
Sources: sorry, this was not a scientific one. All I could get for sure was the chemical reaction. All the other information is from HealthNut Natural Healthy You type sites, or even PrisonPlanet / Infowars (they are very anti-fluoride there).
I'm about to go soak in 1 1/2 cups of chloride flakes & 1/2 cup baking soda for 30 minutes. The sulfate version doesn't help me. I overdid it yesterday and soaked for an hour using 4 cups of chloride flakes. I felt woozy and noticed that GiaK mentioned feeling the same way. I also ordered the topical oil she recommended and will heed her advice to start very low.
Jan, will you take a look at my thread please?...I have a new question. xx