Billie Eilish calls this $5 beauty product ‘the love of my life’

The “Bad Guy” singer detailed her post-concert skincare routine in a Vogue “Beauty Secrets” video published Thursday, and revealed the one product she can’t live without.

the 20-year-old superstar’s regimen includes plenty of pricey potions — like Laura Mercier Body Crème ($72) and Biba de Sousa Cream Barrier ($95).

she calls Aquaphor Healing Ointment ($5) the “love of my life".

“I have it with me at all times, 24/7,” Eilish told Vogue.

“It doesn’t matter where I am, it doesn’t matter who I’m with, it doesn’t matter what I’m doing — I have this in my pocket.

Eilish said she’s “not a big fan” of lip glosses, Luckily, Aquaphor has no taste at all, making it liquid gold for the picky pop star.