Amanda Seyfried believes perfumes are ''super therapeutic''.

The 30-year-old actress - who was announced as the face of Givenchy's new fragrance Live Irrésistible Délicieuse - believes fragrances have a healing power and a single sniff of fragrance can allay any stresses and worries.

Speaking to about the cosmetic product, the blonde beauty said: ''There's something super therapeutic about perfume.

''It evokes so many memories and feelings and visceral reactions to things you might not even be aware of.

''It's about resetting from stress.

''Perfume is so important. Even if you're just stressing out, you can smell your wrist and there's something grounding about that. For example, Live Irrésistible Délicieuse, there's a buzz to it. It's effervescent, it's energetic, and I need that in my life.

And the 'Mama Mia' star - who is expecting her first child with her partner Thomas Sadoski - has revealed she has a strong sense of smell and various scents make her feel nostalgic.

She explained: ''I'm so sensitive to smells, and it's really helpful when you can lose yourself in something like that. When you smell a campfire, it just brings you back to childhood -- it's a calming, soothing smell. Any kind of floral reminds me of every Easter and women that I had when I was growing up -- my grandmother, my aunts. At night, I'll put lavender oil under my nose to help me relax to sleep.''

However, Amanda also relies on acupuncture as well as a sprits of perfume to relax her.

Speaking about her beauty indulgences, she said: ''One of my favourite things to do when I'm not working around a holiday is to go to a Korean spa. It's about the scrub and the saunas -- so relaxing and it feels so good to buff your skin. I love it. I'll do the 90-minute scrub and the massage. Then I go rinse off, I go into the salt room, and then the air-conditioned room. That's such a nice treat.

''I love acupuncture, it relaxes me in a way that no massage does. They hit the points they need to hit, and I feel like I'm bettering myself. I always feel it relieves my neck tension -- I always have a lot from crocheting.

''Exercise is first and foremost what I need to keep doing to promote those good vibes, and I try to do it every day. That physical release of stress is so therapeutic.''