Best Answer

The black line is a reaction with the foundation a girl is wearing. The only way to test for an iron deficiency is by examining blood. Your skin does not have blood on the surface! If anybody is wearing makeup boy or girl, a black line will appear. It is due to the minerals in the makeup. Try it...If someone has no makeup on nothing will happen.

The reason below is completely wrong!!!!

From Chemistry Jones

The reason for this has not yet been proven, most likely it is because of low iron levels. That is what has been thought of it so far. If somebody or yourself rubs or simply wipes a piece of gold (ex. a ring) on your face, a black line may appear.

This is likely to happan if you are a girl in your teens but it rarely happens if you are a boy and if you are above thirty! :D

........................Happy New Year!!!!!!!!!!!!!!

User Avatar

Wiki User

โˆ™ 2011-01-13 17:31:07
This answer is:
User Avatar
Study guides

Add your answer:

Earn +20 pts
Q: When you rub a ring across your face why does a black line appear?
Write your answer...
Still have questions?
magnify glass
Related questions

What does a black line across your toenail mean?

It means you have bruised it.

What will cause a black line to appear vertically across the plasma screen?

You have a defective driver board for that section of the screen. It'll have to be replaced. Hope you have the extended warranty `cause it'll be expensive.

What is the black line coming down the cheetah's face?

they are called "tear lines"

Can you make a homemade face scrub with blackberries?

Yes, just look on line to see what else to add. But if your thinking of making a face mask out of just black berries it will just make your face blue and black!

What is the dark line on Oprah's face?

There's no line on Oprah's face. There's a line to see her face!

How many times does an electron beam line move across a black and white tv screen?


How do you remove a black dotted line across the laptop monitor?

Ask Orry Melissakis 083 297 1347 :)))

How do you enter a black line into a document?

If you want a horizontal line to appear in MSFT Word, then type --- then press Enter If you want a vertical line, then this is probably a | (Control-forward slash on most keyboards).

What is iceing?

when the puckis shot across one goal line to the other team's goal line and it remains untouched. When this happens, there is a face off in the team that shot the puck's defensive zone.

What is the line on Oprah's face from?

what line

What are brick laying hammers for?

You use them to break bricks in half. Tap across the wide face of the brick and it will crack or break along that line.

What is the hawaiian happy face spider life like?

it has a yellow circle an a black smile line an 2 black dots acacia answeared this@iao school

People also asked