talcum powder

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A fine, often perfumed powder made from purified talc for use on the skin.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Perfumed talc (sometimes with the addition of boric acid) for adsorbing moisture on the skin.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a toilet powder made of purified talc and usually scented; absorbs excess moisture