Raise your hand if you've ever applied undereye concealer only to realize a short hour later that you're dealing with crease city. It happens to everyone, but there are a couple of ways to prevent it.

"The biggest key is to not use too much concealer. Start with a little less because when you start to build on top that's when the makeup begins to crease and cake," says Carly Giglio, who served as the lead makeup artist for Stila Cosmetics at Badgley Mischka. "Also, you need to make sure you've got the right texture for your skin type. For example, if you're dry you're not going to want to go with anything too sticky or dry. If you're oily, that sort of texture would actually be more ideal."

She added that applying the product with your ring finger is also helpful since the natural oil and warmth will help melt the product into the skin versus letting it set on top. Also, and this is key, don't be afraid to set with a little bit of powder.

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The nail game is always strong at NYFW and Nails by KISS represented with its imPRESS Press-On Manicures at a handful of the shows. Backstage at Christian Siriano, we spoke to lead manicurist Gina Edwards about how to make sure your press-on nails don't end up coming off right away.

"Before you apply a press-on manicure, you want to make sure that you have no oil on your hands," she says. "If you do, then it's just going to pop right off. You also want to make sure that you file your nail and buff it a little bit. This will also help create more hold."

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Grace Lee, key makeup artist for Maybelline at Johnathan Simkhai, had a few tricks up her sleeve for creating a convincingly natural, beautiful flush on the cheeks.

"You know how when a child blushes they don't blush on the top part of their cheek, but the color is a little lower down? That's where you're going to put the blush for a more youthful, natural look," she says. "Another little trick that I like to do is apply a touch of concealer over the top of the blush so it looks like the color is really coming through the skin." You'll also want to ideally use a cream blush or even a liquid lipstick, Lee says.

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When choosing the right red lip, it's super important that you consider the undertone of your skin, says James Vincent, the lead for Mehron Makeup backstage at Marco Marco.

"If you are on the warm side of the color wheel, a warm red with orange undertones is going to look more natural while a cool red with blue undertones will have more pop. If you're on the cool side of the color wheel, a lipstick with cool base is going to look more natural and a warm shade will give you more pop," he says. "What I love to do if you're unsure of where to go is to actually combine the two. Apply a warm red all over the lip and then pop a blue red right in the center to brighten the teeth and your eyes. It's a great classic Hollywood look."

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Michael Costello brought in Gigi Gorgeous to strut her stuff down the catwalk, but first she had to have loads and loads of extensions applied. In a true "make it work" moment, lead stylist for NuMe, Peter Gray, called in pretty much all the extensions in the city and began securing them to her head. As we expected, he had some good advice on how to make sure they stay in place.

"I like to use a tiny bit of hairspray at the root and then backcomb with a very fine-toothed comb on top of the hairspray right at the root. If you just backcomb the hair without hairspray, it tends to damage the hair or the root, which is never good. It also helps create a little more texture there so that the extensions have something to hold on to," he says. "Also, I like to use a volumizer at the root. I'm using NuMe Root Werk, which is designed to give you more volume, but the product will also give you more hold. I like that it's not too tough — it's not gluey, crusty and it doesn't go powdery at all."

Image via Wendy Gould