Vocabulary
ヤニ取り
やにとり
tobacco stain removal; nicotine stain removal; nicotine stain remover
noun
Example sentences
前（まえ）の歯医者（はいしゃ）さんに、たばこをやめるなら、ヤニ取（やにと）りしてあげる・・・といわれたそうです。
He said that his previous dentist told him that he'd remove nicotine stains if he stopped smoking.