Lipstick Applied at Table or Restroom

Dear Dr. Dave and Dr. Dee,

I recently went out to dinner with my sister-in-law, and after dinner, I applied some lipstick. My sister-in-law told me that I should have gone to the restroom to do that. Is she right?

Signed,

Faux Pas?

Dear Faux Pas,

Although commonly seen in restaurants, applying lipstick at the dinner table is not proper etiquette unless done discretely and took just a few seconds. If this was a business lunch or dinner, then it is best to apply lipstick in the restroom. As a general rule, it's best that lipstick, face powder, or hair fussing should be performed in the privacy of a restroom.