Do you ever experience a trigger of emotions or memories when you smell a certain scent? That’s the case for actress Jessica Chastain, who was announced today as the new ambassador of luxury cosmetics brand Yves Saint Laurent’s newest women’s fragrance, Manifesto.

Chastain has apparently had a connection with the brand from a young age, as she told WWD that she had an aunt who would lend her dabs of the Opium fragrance when she was a young girl. It was by channeling her aunt’s mature and womanly aura while wearing her perfume that Chastain learned to use fragrance as a tool. These days, she wears a different scent for each role that she plays, encouraging herself to get into character through the emotions and attitude that the specific scent elicits. She’s also learned to love associating fragrance with art.

The Manifesto campaign, Chastain told WWD, is the first time she’s played herself in front of the camera — a new challenge for the redhead beauty. “Having Jessica Chastain be the ambassadress of the fragrance — it’s a very vulnerable thing,” she said. “It’s not something I really thought that I would do before until, of course, Yves Saint Laurent called.”