Best Beauty Products for Spring

Katie Holmes and Roberta Armani look glam and ready to beat the heat at an Armani Privé show in Paris.

We caught up with Roberta Armani, niece of Giorgio, to talk about the newest launch from Armani Beauty: Face Fabric Second Skin Makeup ($45). "It's really sheer and light and ideal for warm weather," she told us. "I'll definitely be wearing it this summer at our house in Pantelleria, Italy, over my Armani Crema Nera face cream."

Ever looked in the mirror to see that your falsies have crept halfway up your eyelids? Learn how to put them on the right way from an expert at the Laura Mercier Lash Bar at Henri Bendel in New York. A lash lesson is just $20.

Get the long-lashed look at home with Laura Mercier Full Faux Eyelashes ($18).

Celebrity stylist Andy LeCompte spritzes Sunsilk Waves of Envy Sea Mist ($3.69) onto damp locks to give clients like Lindsay Lohan perfect beachy waves.

Hate having to apply SPF protection in addition to your moisturizer? Incorporate it seamlessly into your skin-care routine with Dior HydrAction UV Milk SPF 20 ($52), a lightweight moisturizer that's packed with minerals to filter the summer sun's wrinkle-causing rays.

Natasha Poly sported electric-blue eyeshadow at a Proenza Schouler show.

Get a look like Natasha's at home with Givenchy Prisme Again! Eyeshadow Quartet in Summer Escape ($49.50)

For eye-cataching swimming-pool-blue lids, try Shiseido Hydro-Power Eye Shadow in Languid Lagoon ($23).

Make your baby blues pop even more with Shiseido Eyeliner Pencil in Blue ($16).

Why bask in the sun when you can get a safe tan at home? Read on to find the self-tanners or bronzers for every age and learn how to get a faux glow like Penelope Cruz's.

20s: SHOW SOME SKIN

Warm weather means a closet stocked with miniskirts and microshorts, but if your legs aren't quite ready for their big reveal, self-tanner is a great quick fix. "Always work tanner into your legs in a circular motion, since rubbing it up and down creates streaks," instructs Victoria's Secret makeup artist Linda Hay. Try Clarins Delicious Self Tanning Cream (above, $40), which has a slightly chocolaty scent from cocoa extract in the formula.

30s: SAVE TIME WITH A SPRAY

If you're juggling a hectic life and don't have time to wait around for self-tanner to dry, an aerosol bronzer gives the same effect without the wait. Mist your face, arms, and décolleté with Dior Bronze Sun Powder Spray (right, $60). Because it doesn't contain any tanner, your newfound nutty color easily rinses away at the end of the day. "If you're trying to cover discoloration, pick a slightly darker shade," suggests Jamie Ahn, owner of Town­house Spa in New York City.

40s: GET A FLAWLESS FACE

If you're looking to add color to your face, experts recommend tinted at-home tanners so you can see where it's going. Lancôme Flash Bronzer Tinted Self-Tanning Face Lotion (right, $27) is a shimmering product that's bronze in color, so you won't miss a spot. "If you have fears about using tanner, mix it with some moisturizer in your palms before applying," says Hay. For the most natural look, don't forget to use some on your jawline and neck.

50s: KEEP COLOR NATURAL

"At this age, you want to have a healthy bronzed look rather than a dark, dramatic tan," says Ahn. Try a self-tanning moisturizer with a low level of DHA (the most common tanning ingredient), which you can apply daily. "For the best results, skip applying it to bony areas like knees and elbows every third day," recommends Hay. Try Neutrogena Color Boosting Sunblock SPF 30 ($9.99), which boasts broad-spectrum sunscreen. And when using tanners like this that build color over time, you needn't worry if your technique isn't painstakingly perfect.

60s: ALWAYS EXFOLIATE

Postmenopausal women often experience a loss of moisture in their skin, which can result in blotchy, uneven results when dry spots absorb too much sunless tanner. "The secret to an even tan is exfoliation," says Hay. Prep skin with a loofah or scrub, paying special attention to tricky areas like knees and elbows. Then follow with a hydrating product that has just a touch of DHA, like Victoria's Secret Bare Bronze Daily Glow Moisturizer ($16). If your skin is really parched, skip tanner altogether and opt for a cream bronzer like Yves Saint Laurent Voile de Soleil, (above, $38).

70+: SHOW OFF A SUBTLE GLOW

"If you use products containing glycolic acid or a retinol in your routine, stay away from self-tanner," says Ahn. Pick a powder bronzer instead, which will allow you to layer color for a naturally sun-kissed look rather than a full-blown tan. Dust Clinique Shimmering Tones Powder Quad in Golden Bronze (left, $28.50) across cheekbones and forehead - places where the sun hits naturally.

GET A BETTER BUM

These models have perfect posteriors, but the rest of us may need a boost from time to time. We vetted the newest products that promise to tighten jiggly thighs and smooth cellulite - read on to find out if they REALLY work.

The Elemis Skin Brush ($47), made of prickly cactus bristles, sloughs off dead cells to reveal the healthy layer beneath. Buff dry skin from your feet up to your bum before showering. "Yes, it hurts," one tester confesses, "but it really softens skin, so it's worth it."

Nivea Good-bye Cellulite fights cellulite from every angle. After the slightly sticky gel ($18.99) dries on thighs, "they're more taut." The feeling is fleeting, but the product is sold with pills that claim to metabolize fat over time too.

Does "no pain, no gain" hold true? Wage war on wobbly bits with the Biotherm Celluli Roller ($15). "It pinches and leaves red track marks," says our fearless tester. "My cellulite is improved, but it's certainly not gone."

Orlane S.O.S. Contouring single-use sleeves ($85 for 28) contain caffeinated cream that boosts blood flow to smooth skin and slim thighs. "I noticed a difference after a week," says a tester. "My skin felt tighter."

Galénic Elancyl Minceur ($60) is a best-selling French brand that treats cellulite with caffeine and plant extracts. "The massage tool reduced the appearance of lumps," one of our testers says.

One tester loved the Bliss FatGirlSleep ($38), a luxurious nighttime treatment, but admits it's better for skin smoothing than eliminating cellulite: "It smells yummy and evened out my skin, but it hasn't drastically changed the rear view."

Shiseido Body Creator Concentrate ($63) is a peppery gel with collagen-boosting extracts that "tingles and leaves skin firmer," says our tester.

Who doesn't want to be a golden girl as the sunshine becomes stronger? Today's gold standard is polished, sleek, and more covetable than ever. And it looks so totally pricey.

From top, clockwise: Jäneke boar-bristle brush ($40) handmade in Italy; OPI Curry Up Don't Be Late! ($8.50) is part of the India collection; Fendi Palazzo Purse Spray ($65) comes with a velvet pouch and three refills; Comme des Garçons 888 perfume ($105) is meant to smell of gold; Guerlain Two-Brush Mascara ($35) plumps and defines; Diane Slim Line scissors by Fromm ($85); Dior Addict Lipstick in Positive Red ($25) gives great shine.