Amanda Peet

Amanda Peet flashes her pearly whites. Courtesy photo

Amanda Peet's flawless smile may have just landed her a gig with Crest Whitestrips, but the brunette beauty says Hollywood can often be a perplexing place for a woman.

"You can't take that stuff seriously," Peet said of the red carpet commentary that dissects every actress in painstaking detail post-event. "Honestly, I have a drink to relax before I go out there. A glass of wine or a shot of vodka. It becomes easier with age," Peet told StyleList.

Yet the New York native is the first to admit she has a contentious relationship with age; in fact, it came to a head recently when the 39 year-old was enjoying some couch time with her screenwriter husband of five years, David Benioff.

"We flipped to a comedy with Kathryn Hahn and two other actresses in it. We're watching it, and I elbow my husband, like, 'Hey, why aren't I in this? Why didn't they call me?' And my husband just looked at me, and was like, 'Um -- Amanda, they're like 32,'" remembered Peet.

"I was in shock. I walked around for three days really upset at the thought that I could be considered too 'old' to play a part. I'm in denial, because I really think I'm 30. But I hate when actresses lie about their age, just like friends I try to set up on dates. They say, 'Don't tell him my age!' And then I think, 'No wonder you can't get a relationship! You're lying about stuff that doesn't even really matter,'" reflected the mom of two young girls.

Like any actress who has taken a turn on the silver screen, Peet has a pocket full of beauty tricks she relies on to look and feel her best. Though unlike other stars who swear by a beloved makeup artist or elite spa treatment, most of Peet's tips are of the DIY kind, and have been passed down from her mom.

"When my mom used to clean my ears as a kid, she'd finish with Elizabeth Arden's Eight Hour Cream to moisturize. She'd rub it into my hands and cuticles too, and that scent is so sentimental to me now, it brings back memories. I love to use the cream as a lipgloss," Peet says of the apricot-colored balm.

With sparkling teeth a virtual requirement for her job, the Columbia University graduate swears by Crest's new 3D White 2-Hour Express Whitestrips, which claim noticably whiter results with just one two-hour use. Peet maintains results between treatments with 3D White Advanced Vivid Enamel Renewal Toothpaste, which she enjoys because she experiences no sensitivity side effects.

"Years ago, I had those whitening trays put in at a dentist's office. Oh, the pain! I'm telling you, childbirth was easier. I can't take that metallic shock of tooth pain. I'll use the two-hour strip before a red carpet event or even a special date with my husband for a pick-me-up, and I don't have to worry about those horrible sensitivity issues," said Peet.

To bring out her steel-blue eyes, Peet always finishes her face with a bright pink blush blended over her cheeks -- and a drugstore one, at that. CoverGirl's Cheekers Blush in Plumberry Glow is her favorite of the moment, and a gentle tap to the nose and chin helps radiate a natural-looking glow.

As for what's up next for the actress, Peet just nabbed a starring role in NBC's comedy pilot, "Bent." Playing a 'Type A' single mom divorceé, Peet tries not to become romantically entangled with the sexy and steamy contractor she hires to renovate her kitchen.

Our guess is the next time the hubby is flipping through the channels, age will be the last thing on his mind.

For more celeb beauty secrets, check out what Rihanna's hairstylist divulged to us about her star client's hair.