Margherita Schiliro (@mmargheritaschiliro) said she was recently alerted that Dawn, an American brand of dishwashing liquid, has a secret second use: It can also be used to wash your hair. If you’re ...

While there may be a certain appeal in wanting to attain effortlessly luscious, healthy hair by simply extending the number of days between shampoos with dry shampoo, for example, this might ...