5 Must-Have Beauty Products For Your 20s, 30s, 40s and 50s

WHAT IT IS A long-lasting lipstain ($7; drugstore.com) with a marker-like precision applicator.
WHY YOU NEED IT This decade is about fresh-faced, natural beauty says makeup artist Amy Nadine, who works with Lauren Conrad. "The colors really pop without feeling overdone--plus they last for hours and aren't drying," she says.

WHAT IT IS A loose shimmer powder ($24; sephora.com) with synthesized mother of pearl particles.
WHY YOU NEED IT "You can still pull off shimmer in your 20s," says Nadine. "This powder has the perfect proportion of glitter to pearly iridescence." Use an oversized powder brush and apply liberally over your foundation.

WHAT IT IS A gentle, foaming facial cleanser ($21; benefitcosmetics.com) that whisks away makeup.
WHY YOU NEED IT "Life in your 20s may equal late nights out," says Frieda Pinto's skincare expert Sunday Riley, "but it's critical to wash your face before bed, no matter how tired you are." A gentle foaming formula is a must.

WHAT IT IS A lightweight styling spray ($25, fekkai.com) that adds definition--not crunch.
WHY YOU NEED IT "Women in their 20s like easy, undone hair," says hairstylist Marcus Francis, who works with Hilary Duff and Evan Rachel Wood. "A few spritzes of this spray and it's like you've been at the beach all day."

WHAT IT IS A floral oriental fragrance ($37/3.4 oz, amazon.com) with playful notes of vanilla and rose.
WHY YOU NEED IT There's just something fun about this iridescent fragrance. "It's good for dancing nights and laughing days," says Tania Sanchez, co-author of The Little Book of Perfumes ($12, amazon.com) with Luca Turin.

WHAT IT IS A waterproof pencil ($7; drugstore.com) that provides the staying power of a liquid liner. Bonus: A built-in smudger for a subtle smoky look.
WHY YOU NEED IT "The 30s are the perfect age to pull off a cat-eye. It's such a strong and stylized look," says makeup artist Amy Nadine, who works with Rachel Bilson. "People are intimidated by liquid liner so I always suggest these pencils. They glide on as smoothly as kohl, but dry like a shiny, high-impact liquid."

WHAT IT IS The cult favorite push-up cheek stain ($30; tartecosmetics.com) is jam packed with natural antioxidants like goji berry, acai and pomegranate.
WHY YOU NEED IT Into your 30s you want to project a supple, healthy glow. "They come in pretty, playful shades and leave behind a dewy, healthy finish," says Nadine.

WHAT IT IS A powerful dose of antioxidants ($60; perriconemd.com) to protect against free radical damage. It's derived from a combination of berries including raspberry, blueberry and acai.
WHY YOU NEED IT New York City dermatologist Nicholas Perricone says, "Our skin reflects our diet almost immediately." This supplement is packed with vital nutrients, minerals and essential amino and fatty acids. (38-year-old Gwyneth Paltrow is a fan of Dr. Perricone's line.)

WHAT IT IS An invisible mist ($39/8.5 oz, oribe.com) that absorbs oil and plumps strands, creating dynamic movement and weightless lift.
WHY YOU NEED IT The '30s are one of the busiest decades of a woman's life. "This spray is a fast, easy way to give texture that holds," says hairstylist Marcus Francis, who has worked with Michelle Williams and Bryce Dallas Howard. "The hair is instantly sexy and mussed."

WHAT IT IS A flowery blend of jasmine and iris ($135/3.4 oz, luckyscent.com) that still manages to have a smooth, cologne-like finish.
WHY YOU NEED IT "This fragrance feels delicate but shows surprising strength," says Tania Sanchez, co-author of The Little Book of Perfumes ($12, amazon.com) with Luca Turin. "It's good for carrying you through a crisis." Or through getting married, buying a home, having a child...the list goes on.