Kourtney Kardashian has used the same mascara for over a decade. Yes, you read that right.

In a time when there are thousands of beauty brands vying for your bucks, it’s rare for a person to not buy into the hype of a new product and stick to the same brand since university.

But Kourtney Kardashian has done exactly that, sharing on her blog that she has been using the same mascara for more than a decade.

In a post about her holiday beauty essentials, she said she uses Lancôme’s Hypnose Buildable Volume Mascara ($52), also known as the Custom Volume Mascara.

Listen: Zoe’s best beauty advice for the time-poor woman. Post continues… 

“I don’t wear much makeup when I’m on vacation and usually go for a more natural vibe,” she wrote.

“When it comes to mascara, I have used Lancôme ever since college.”

Now that’s some serious brand loyalty.

The mascara also comes in a waterproof formula that the 38-year-old uses while on beach and poolside holidays.

The eldest Kardashian sister also shared that she uses Cils Booster XL Mascara Primer ($54) and Charlotte Tilbury’s Life Changing Lashes Eyelash Curler ($35) to create bright, bold eyes.

Do you have a favourite product that has stood the test of time?