Who she's worked with: Christie Brinkley, Channing Tatum and Perez Hilton.
The problem: Straight, downturned or lifeless lashes.
The tip: Learn to really curl those luscious lashes.
"Look straight ahead and try to place the lash curler as close to the root of your top eyelashes as possible," Hayman says. "Do a gentle test squeeze to make sure you don't have any skin caught in the curler. Once placed correctly, squeeze your thumb and pointer fingers together so they touch. While squeezing, gently lift your wrist up and then back down before loosening your grip. Do not apply mascara before curling."
Who she's worked with: Melania Trump, Ivanka Trump, Brooke Shields, Molly Sims, Maria Menounos and Kathie Lee Gifford.
The problem: Your favorite tube of mascara has gone dry.
The tip: Just add a few drops of water!
"Simply add water to the mascara tube, then insert the mascara wand and pump, pump, pump the wand up and down over the sink," Bryl says. "The mascara that is dry and leftover in the tube will moisten up from the added water with each pump and leave you with a few more uses."
Who she's worked with: Mary Steenbergen, Leighton Meister, Oprah Winfrey, Laura Dern, Jennifer Lopez and Heidi Klum.
The problem: You want bright-colored eyes without looking tacky.
The tip: Skip the bright eyeshadow and opt for eyeliner instead.
"For most people, I would recommend to avoid bright neon pops of color on the eyes and favor the earthen tones because, quite frankly, very few people over the age of 21 look good with clown-colored eyelids. Add color burst with liner instead."
Who she's worked with: Brooke Burke, Brandy, Nicole Scherzinger, Audrina Patridge, Jennifer Hudson and Kim Kardashian.
The problem: Dry lips leading to poor lip-color application.
The tip: Brush them with a toothbrush once or twice a week, then follow up with lip color.
"It's also really nice to apply pure lanolin to lips after brushing teeth and before bed. Such a great conditioner."
Who she's worked with: Allison Williams, Elizabeth Olsen, Emma Roberts, America Ferrera and Quvenzhane Willis.
The problem: Patchy foundation application is getting you down.
The tip: Always start with a primer.
"[I] love to start with clean skin and add a primer," Heydt says. "Your fine lines and imperfections are filled to provide a nice surface with or without adding makeup."
Who she's worked with: Katie Holmes, Brittany Snow, Kristin Davis, Kelly Ripa, Alyssa Milano and more.
The problem: You're not sure which mascara to choose.
The tip: When in doubt, go black.
"Black mascara works on everyone," Giordano says. "For fair blondes, it might be the only eye makeup you'll need. The whole point of mascara is to enhance the shape of the eye and define your lashes, so it needs to be visible."
Who she's worked with: Kate Hudson, Britney Spears, Eva Mendes and Scarlett Johansson
The problem: You're not sure how to use concealer.
The tip: Use it after applying foundation, not before.
"Concealers tend to have a heavy consistency, so it's important to apply it after you've applied your foundation, which many people do not do," Kaye says. "You'll find that your base makeup will generally take care of most of your concerns, so concealer is just that added insurance."
Who she's worked with: John Travolta, Carol Burnett, Geena Davis and more.
The problem: Cloudy, red eyes messing up your application.
The tip: Use eye drops before every makeup application.
"To keep a fresh look all day, start your makeup routine by using eye drops," Hill says. "You can [also] relieve redness or irritation on the skin by applying eye drops with a cotton ball on dry skin before your makeup routine."
Who she's worked with: Andie MacDowell, Cheryl Hines and Natalie Coughlin.
The problem: Clunky, chunky foundation application.
The tip: Use a clean powder puff to buff hard edges and lines.
"Always buff [foundation] with a soft, clean powder puff for a seamless finish that looks just like skin," Linzee says. "Take a clean, soft powder puff and buff out the foundation lightly. Don't press too hard so that you wipe off the foundation, but with quick light motions buff it in. I go upwards first and all around, but finish in a downward motion so all those tiny peach fuzz hairs are pressed down in the end. You'll see how this gives your skin a flawless look that doesn't look too made up. People will ask what skin-care products you've been using because your face looks perfect, but not like you have makeup on."
Who she's worked with: Various models for editorial shoots.
The problem: Uneven foundation application from sponges, fingers and foundation brushes.
The tip: Use a beauty blender, a reusable sponge ideal for light-to-buildable application.
"Pour a small amount of foundation on the back of your hand and press the smaller side of the beauty blender against your foundation," Pelayo says. "In small dabs, start applying your foundation on your forehead and work your way down to your nose, then towards the outside of your face. For fuller coverage, repeat this step until desired coverage is reached."
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