Some glaucoma medicines will darken the iris color.
Black is added to a color to tint it which means to darken the color.
It is normal for your labia to be different colors, the color can differentiate from top to bottom so as left to right.
Yes, I believe that it is fairly common for womens nipples to darken during pregnancy. yes, nipples and aureola, as well as labia may darken. Also you may notice a dark line that goes from your navel down to your pubic area. Some women also get dark splotches on their face and other parts of the body, but this is not as common.
The rush of blood into the labia caused by sexual stimulation can cause the labia to turn a dark color. If the labia belong to someone of a dark complexion, ie African American, Indian, etc. the labia may become black with age. It should also be considered that caucasian women who have more than frequent sexual activity can develop a darker color in their labia from friction, stretching and oversized, prolonged penetration.
There is no change in the colour of urine during menopause.
30 nights 30 days
It usually turns darker because during arousal, blood engorges the vaginal area (which includes the labia).
Lots of reasons. Most colors will darken when they dry. The color of the wall underneath will affect it. Going over a darker color, even with two coats, the darker base can still darken the new color. The type of light changes it also. Even how you apply it can affect the color,
Actually it is best to try and avoid using black to darken a color. A lot depends on the medium being used. In paints a good way to darken a color is to mix it with a small bit of it's opposite. For example: to darken blue add a small bit of orange. Try to reserve black for those times you absolutely need it. A 'rich black' can also be created by mixing the three primary colors.
I have seen them lighten, or darken, in color, as they grow. But, never change color.......Chuck.
There is no darkening shampoo, only the washout color.