Nail Polish 指甲油
Nail polish may just be the Twinkie of the beauty world: It won't go bad from bacteria. Eventually though, lacquer will dry out and become thick and clumpy, with the pigments settling along the bottom of the bottle. Shake it, and if the formula remains separated, it's done-zo。
Ttips:指甲油不會滋生細菌,但是時間一長會干。如果搖晃之后,沉淀和油狀還是分離態(tài),就變質(zhì)了。