Specifically talcum powder used for cosmetic purposes, as indicated by 化粧用 (for makeup). The cross-reference タルカムパウダー is the katakana loanword for talcum powder.
See also: タルカムパウダー
Cosmetic talcum powder is used to make the skin smooth and dry.
Katakana loanword for talcum powder, often used in general contexts, while 化粧用打ち粉 explicitly specifies cosmetic use.
Compound of 化粧用 (for makeup) + 打ち粉 (dusting powder). The exact historical derivation is uncertain, but the term transparently describes talcum powder used in cosmetics.