最終更新日:2022/12/23

lt is difficult to produce an absolutely non-irritant vaseline. Lanolin (wool fat) is indeed clear and smooth but it is neither very hydrophile nor neutral, so that it cannot be mixed with basic substances such as zinc oxide without saponifying.

編集履歴(0)

Sentence quizzes to help you learn to read

編集履歴(0)

ログイン / 新規登録

 

アプリをダウンロード!
DiQt

DiQt(ディクト)

無料

★★★★★★★★★★