It's made from a natural vegetative pigmentation, not synthetic chemicals, but we haven't yet been able to track down the coloring agent.

By contrast, "Encasing a low-intensity complexion within a higher-contrast setting dilutes the face's natural pigmentation in addition to distracting the viewer's eye."

No scales other than lips slightly darker than her natural pigmentation, and emerald eyelash sparkles on low radiance.

The use of eye shadow attempts to replicate the natural eye shadow that some women exhibit due to a natural contrasting pigmentation on their eyelids.

An albino," Frank explained, "has no natural pigmentation, so his hair is white as snow.

WPI's school colors, Crimson and Gray, were inspired by the natural pigmentation of the beech tree next to the bush sitting near the entrance of Boynton Hill.

Saints, of course, wear halos, their luster still amazingly bright thanks to some natural pigmentation known only to the original artisans.

His irregular skin coloration is the result of natural pigmentation, which is also probably normal.

This can be the result of factors such as: thickness and degree of keratinization of the epithelium, blood flow to the gingiva, natural pigmentation, disease and medications.

Close inspection revealed that the dark coloration was not natural pigmentation but a mottling caused by the presence of innumerable small dark granules embedded in the skin.