• Actress Amanda Seyfried's makeup artist, Genevieve Herr, revealed the products she used on the star for the Long Bright River premiere in New York City.
  • Amanda wore Lancôme Lash Idôle Mascara as part of her look.
  • Usually retailing for $30, the product is on sale for $25 (15% off) on Amazon right now.

Amanda Seyfried is having a moment with the success of her new Peacock series Long Bright River. While her character may be a cop who doesn't wear a ton of makeup, the actress certainly had fun in the beauty department while promoting her latest project.

Back in March, the Mamma Mia alum had the chance to show off her elegant aesthetic at the Long Bright River premiere in New York City. Showing up in a flashy gold sequined mini dress, the real showstopper of the ensemble was Amanda's flawless makeup look. Although her berry lip color certainly made a statement, Amanda's makeup artist Genevieve Herr told Byrdie there was one other element that really helped bring this look to life. She relied on a specific makeup product to ensure a stunning facial feature would pop for Amanda.

As Genevieve told the outlet shortly after the event, she wanted Amanda's green eyes to pop while in the spotlight. This is when Genevieve relied on using two mascaras to accentuate their sparkle and help her lashes hold up to the curl. So, what product was the hero of the night? Genevieve shared that she used Lancôme Lash Idôle Mascara.

amanda seyfried 2025 beauty lancome lash idole mascara
Dimitrios Kambouris//Getty Images

While the mascara normally costs $30, shoppers will be thrilled to know that Lancôme Lash Idôle Mascara is currently on sale for $25 (15% off) on Amazon.

Lancôme Lash Idôle Mascara

Lash Idôle Mascara

Now, what can beauty aficionados expect from using the Lancôme Lash Idôle Mascara? According to Lancôme's official website, the product is designed to lift and fan out lashes to give "an open-eye effect that lasts up to 24 hours." Additionally, the product's unique curved wand claims to help grab every lash from the root in order to create longer, clump-free eyelashes. And with the mascara being a lightweight gel formula, the brand claims your lashes will feel soft without any flaking or smudging.

But that's not all: The Good Housekeeping Institute's Beauty Lab tested the Lancôme Lash Idôle Mascara and awarded it the title of "Best Lengthening Mascara" for the 2021 Beauty Awards. At the time, testers raved about their experience with the mascara.

"You can create serious length with this," one tester told Good Housekeeping. "My lashes still looked curled by night," another agreed. "It even kept them perfect with no smudging or flaking in wet conditions," a different user said.

Curious about the rest of Amanda's red carpet makeup? Shop more beauty products from her look below:

L'Absolu Rouge Drama Lipstick
Lancôme L'Absolu Rouge Drama Lipstick
Teint Idole Ultra Wear Foundation
Lancôme Teint Idole Ultra Wear Foundation
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Adrianna Freedman
Associate Editor

As the entertainment and news associate editor for Good Housekeeping, Adrianna (she/her) writes about everything TV, movies, music and pop culture. She graduated from Yeshiva University with a B.A. in journalism and a minor in business management. She covers shows like The Rookie, 9-1-1 and Grey's Anatomy, though when she’s not watching the latest show on Netflix, she’s taking martial arts or drinking way too much coffee.