However, if you're struggling to pick a dark red color, understanding your undertones might help. For those with cool undertones, lipstick with purple or blue hues, like the Kosas Weightless Lip ...

The intense red color of classic lipstick traditionally comes from an unlikely source: crushed bugs that live on cactus plants in South America. It takes tens of thousands of the ground-up insects ...

Discover the top 10 red lipsticks that offer long-lasting color and a smooth finish. Find the perfect lipstick to suit your needs. Loading Suggestions... Loading Suggestions... Loading Suggestions ...

“So lining your lips with a dark lip liner dulls the red ... think there’s universal rules when it comes to red lipstick, but I definitely colour outside of the lines," Flow says.

To accompany Fanning's elegant Loewe ensemble, makeup artist Erin Ayanian Monroe used all L'Oréal products on her face, including the brand's L'Oréal Colour Riche Lipstick in British Red ($7).