|
|
This article has multiple issues. Please help improve it or discuss these issues on the talk page.
|
|
This article's listed sources may not meet Wikipedia's guidelines for reliable sources. Please help by checking whether the references meet the criteria for reliable sources. (September 2012) |
|
Pearlescent or nacreous coatings or pigments possess optical effects that not only serve decorative purposes (such as cosmetics, printed products, industrial coatings, or automotive paints), but also provide important functional roles, such as security printing or optical filters.