Perhaps it isn't very clean so there are germs in it which have got under your nails?
More probably, it is from minerals in the water, or a chemical reaction that causes this. I have had this happen as I am recently working in an area where there is well water in the sinks and I notice my nails and cuticles have a blackish coloring to them. Underside of the nails (mine are rather long so it is quite noticeable.)
However, I also notice I can scratch it off by running another finger nail underneath, or scrub it off with soap and a nail brush. When I get home where I have Chicago water, it seems to come off. So I would say it is temporary and harmless. The people who live around there have used the well water for years. Tho I haven't asked them specifically about this blackness, I imagine they must experience it too.
Pepto-Bismol is made with bismuth subsalicylate, which can react with sulfur compounds present in contaminated water to form bismuth sulfide. This chemical reaction causes the mixture to turn black.
The acidity in skin has tendency to cause silver to turn black or green. This is a corrosive agent that can be cleaned with a quality silver cleaner.
You use flowing water to turn a turbine. Or you heat water and turn it into steam which is used to turn a turbine.You use flowing water to turn a turbine. Or you heat water and turn it into steam which is used to turn a turbine.
It turns into liquid water.
no
Tea leaves go in boiling water to turn black.
Let's Make the Water Turn Black was created in 1968.
i dont think they do but dark colours such as black may stain your nails yellow so put on an undercoat
Iron in your flask or iron nails in the distiller's barrel can in time cause whiskey to blacken.
Yes,it is because someone can touch your hair and that person may be sick so you may get sick and your hair could get ruined. Your nails often turn black if you eat food and germs could crawl into your nails because they are open.
It doesn't. Get your facts right.
no. it makes white.
No you cannot. It will turn the sand and water black.
Yes, chlorine does turn sterling silver black!!
The glass could have traces of magnesium in it which when combined with hard water would create magnesium-oxide. This chemical change would turn the water black.
it turns into your hair and nails...
Too much iron in the water