cosmetic (n.) Look up cosmetic at Dictionary.com
c.1600, "art of beautifying," from Latinized form of Greek kosmetike (tekhne) "the art of dress and ornament," from fem. of kosmetikos (see cosmetic (adj.)). Meaning "a preparation for beautifying" attested from 1640s (now often cosmetics).
cosmetic (adj.) Look up cosmetic at Dictionary.com
1640s, from French cosmétique (16c.), from Greek kosmetikos "skilled in adornment or arrangement," from kosmein "to arrange, adorn," from kosmos "order" (see cosmos). Figurative sense of "superficial" is from 1955. Related: Cosmetically.