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Your nail turns blue when the blood clot in it.

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15y ago
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15y ago

If you hit your nail you will get a bruise underneath it and that is what you see on the nail.
Or nailpolish.

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12y ago

you put poo on it

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Q: What causes nail to turn blue or black?
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Related questions

What causes black dyed hair to turn green?

Bleaching you hair because black dye has alot of blue in it. Yellow and blue makes green.


You hit your toel nail and it turn blue but it did not bleed?

It bled alright, but the blood remained under the nail. Over time, the blue/black portions will grow out, and the nail will return to its normal color. If you've really whacked it seriously, the toenail may detach and fall off.


Is nail a living thing?

yes. if a nail was dead, it would turn black. they are living.


Why does a nail turn sprite green?

Because there is something in the nail glue, that causes a fung to grow. My nails do that too


What causes fingernails to turn orange?

A fungi or bacterial infection in the bed of the nail can cause the nail to turn orange. Smoking cigarettes frequently can also cause the nails to turn orange.


What can cause nail bed to turn blue?

It usually happens when you've either hit the nail or trapped it somehow - it's a bruise under the nail.


Why do fingernails turn blue when dead?

Well, the actual nail is always dead, just like your hair. The blue comes from something like a bruise in the skin underneath the nail.


What two nail polish colors make whit nail polish?

Stuff you will need: Clear nail polish, Rainbow,Red,Blue,Gold, and Pink Glitter. Just make a Paper Cone and add all the glitter into the nail Polish bottle. And eventually it will turn black! (trust me i've done this before. WARNINGS: And don't put too much of one color or it will turn out wrong And dont use very fine glitter ;D)


What causes a nose to turn blue?

alcohol


What causes an onion to turn blue?

Blue food coloring. .


Why didn't the margins of the leaf turn blue black after the use of the iodine solution?

The margins of the leaf did not turn blue-black because there was no starch present in that area. The iodine solution reacts with starch to produce a blue-black color. If the margins did not turn blue-black, it suggests that there was no starch in that part of the leaf.


What color does Litmus paper turn when dipped in nail polish remover?

Litmus paper will turn blue when dipped in nail polish remover, indicating a basic pH. Nail polish remover typically contains acetone, which is a weak base.