Pucker up, pals, let’s learn about lipstick! Applying tinted goop to make your face fancy and your mouth mesmerizing has been in style for thousands of years. But what’s in that stuff? Crayons? Strawberries? Petunias? We asked cosmetic chemist Amanda Lam to help us find the answer.

Got a question and can’t makeup your mind whether to ask for help? Send it to us at BrainsOn.org/contact, and we’ll help lip-stick the landing.