/kɒz'metɪk; kɑz`mɛtɪk/
n (usu pl 通常作复数) substance for putting on the body, esp the face, to make it beautiful 化妆品（尤指用于面部的）
*Lipstick and hair conditioner are cosmetics. 口红和护发素都是化妆品.

adj
1 used as a cosmetic 化妆用的; 美容的
*cosmetic preparations 梳妆打扮.
2 (usu derog 通常作贬义) intended to improve only the appearance of sth 装点门面的
*The reforms he claims to have made are in fact merely cosmetic. 他自称已经实行的改革实际上只不过是摆摆样子罢了.

adj
[Date: 1600-1700; Language: Greek;Origin: kosmetikos 'skilled in decoration', from kosmein 'to arrange, decorate', from kosmos; COSMOS]
dealing with the outside appearance rather than the important part of something
= superficial
　We're making a few cosmetic changes to the house before we sell it.
　Many MPs denounced the resolution as a cosmetic exercise (=something which will look good, but have no real effect) .
intended to make your hair, skin, body etc look more attractive
　the cosmetic industry
　cosmetic products
　Are you on the diet for health or cosmetic reasons?