What is the metal in group 15 that is part of compounds often found in cosmetics?
The metal is bismuth.
The most common bismuth compound found in cosmetics is bismuth oxychloride,
It is also known as "synthetic pearl", because light wave interference from its plate-like structure gives it a pearly appearance.
It is often used in nail polish, bronzers, blush, and eyeshadows because of its shimmery look and the silky feel it has on the skin.