“I spent my teens and early 20s as a professional ballerina, dancing with companies in New York City and Montreal. After retiring in 2008, I went into the boutique fitness field. At first, the only space I could afford was a 500-square-foot room in a church, which meant there was no room for traditional equipment. I had to figure out: What can you do in a small footprint that gives people the benefit of a total gym? I came up with a high-intensity circuit that toned the full body. When I brought in mirrors, people loved them. They found the visual feedback inspiring and also helpful in keeping their form correct.

Fast-forward to 2016, which found me running three fitness studios across New York City. Getting to my own workouts was hard, especially because I was pregnant at the time. Biking or running on a treadmill in my apartment just didn’t appeal. I tried workout apps, but they weren’t immersive enough to hold my interest.

RELATED: Use This 10-Minute Leg Workout to Get Toned While Channeling Your Inner Ballerina

RELATED: I’m the Worst Dancer, but I'll Never Quit Taking Dance Fitness Classes—Here’s Why

I started thinking how I could bring that small studio experience into my home…and thought back to the mirrors I’d put in that church years ago. I came up with Mirror, an interactive home gym that hangs on your wall.

In the early days, when I didn’t have a physical prototype, people couldn’t understand what the experience would be like. Then once it was made and they could experience it, I heard, ‘I can’t believe I didn’t think of this!’

Variety’s a key component of a good workout, so Mirror users can choose from live and on-demand classes in cardio, strength, yoga, barre, boxing, HIIT, and more… without leaving their home. I’ve heard from parents who say that for years they’ve struggled to find time to get out of their house and work out—and then felt guilty once they did. Being able to work out at home isn’t just a solution for them, but helps their whole family.

RELATED: 10-Minute Cardio Workout You Can Do at Home

Many wellness-based goals are focused on future rewards—like making you stronger one day. Or thinner. Or healthier. That makes it really challenging to be successful. If you enjoy the experience now, future rewards will come. So that’s another mental shift I’m hoping Mirror will bring. Many people look in their mirror at home and spend time criticizing their body. I want this to help them celebrate what they’re capable of.”

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Jennifer Lopez is famous for perfecting that elusive, never-too-shiny glow on the red carpet (heck, she even had a perfume named Glow). Luckily, J.Lo's makeup artist Scott Barnes is dishing on the technique he uses to help the star get that radiant, full-body effect—and trust us, it's good.

Barnes teamed up for a video on YouTuber Tati Westbrook's channel to showcase his new makeup brush line and some of his go-to techniques. The 30-minute video is worth a watch in its entirety. Barnes—who's also worked with Christina Aguilera and Celine Dion—shares some of his expert hacks, including why he applies contour under foundation, and that time he used L'Oréal Bronze Coin lipstick as a highlighter, lip color, and eyeshadow for a shoot. But if you just want the most interesting tidbit, it's Barnes' favorite drugstore product: Neutrogena Ultra Sheer Lightweight Sunscreen Spray SPF 30. (Buy It, $7, target.com)

RELATED: Jennifer Lopez Shows Off Her Bare Butt in New Video

Photo: John Shearer / Getty Images

And no, it's not just because sun protection prevents aging. (Although, it totally does!) Barnes actually likes to use the sunscreen as a finishing tool on the red carpet to add to his clients' body glow. Mind. Blown.

RELATED: Jennifer Lopez’s Curly Lob Makes Gym Hair Look Good

There are several steps Barnes does to build that bronze base and afterward to add dimension. The first step is full-body foundation. If you've seen J.Lo's notorious "naked dress," then you're aware her glow doesn't end at her jawline. Unsurprisingly, Barnes is a proponent of extending makeup below the face. (In the video, he applies Tati's foundation all the way down her chest and even on her hands.) Naturally, Barnes also sells a product called Body Bling, a hard-core body bronzer that reviewers say works even on the palest of complexions.

RELATED: J.Lo Just Posted an Absolutely Insane Photo of Her Abs While Rocking a Neon Pink Bikini

Here's where the SPF comes into play. Post-foundation, Barnes will layer on the Neutrogena sunscreen spray to both set the foundation in place and enter "super glow" territory. "Forget the MAC setting spray," he quips in the video. (And of course, "this is also good for your skin, so when you go outside bronzed you maintain your sun protection," he adds.) After misting the sunscreen on Tati's chest, he then applied powder bronzer and highlighter to achieve what he calls "Barbie skin." There you have it.

RELATED: J.Lo Just Designed the Sunglasses of the Summer—and They’re Only $60

Granted, yes, this slick, bronzed look is more editorial than everyday. "I see people who do really beautiful makeup and people look great on the street," he said in the video. "That's not my thing. You'll look good on film, but maybe in person you'll look like 'ah!'" Translation: This full four-step foundation, sunscreen, bronzer, and highlighter combination isn't exactly meant to look natural in person…

I'm no stranger to a booty mask or any product that promises to tone and tighten. Scrubs and creams that claim to smooth, tone, and leave your cheeks with a healthy glow? I've tried them. Brushes and massagers that exfoliate and blast cellulite? Been there. If it’s for your ass and thick thighs, I’ve put it to the test. But no product aimed at treating the butt has stuck it out in my routine, and I was just about to give up on a holy grail booty product.

However, when I heard about a new butt mask and that peach queen Khloe Kardashian was a fan, I had to get my hands on it. Not only has this newcomer booty mask sold out on Sephora an impressive three times since launching in the U.S. in September 2018, but Kardashian posted a series of self-care Instagram stories using the "extra" luxurious cream. 

Was this butt mask the real deal? For the sake of journalism (and my toosh), I needed to find out.

Maelys Cosmetics B-Tight Lift and Firm Booty Mask ($49; sephora.com) is made with firming collagen and guarana, a fruit native to the Amazon with seeds known to contain way more caffeine than coffee beans. Caffeine is extremely helpful in smoothing skin and reducing dimpling (aka cellulite), notes New York City-based dermatologist Debra Jaliman, MD.

The formula also boasts detoxifying red grapefruit oil, which activates the lymphatic system. When that is stimulated, cellulite can be prevented or lessened, she adds.

The star ingredients are pink pepperslim and eco-slim. Pink pepperslim is a slimming oil known to reduce fat and is eight times more powerful than caffeine, while eco-slim has 46% higher concentration of caffeine than caffeine extracts. The bottom line? These ingredients could reduce sagging and improve tightness, says Dr. Jaliman.

RELATED: Sheet Masks for Your Butt Exist: Here Are 4 That Are Dermatologist-Approved

To buy: Maelys Cosmetics B-Tight Lift and Firm Booty Mask ($49; sephora.com)

It was finally time to see what all the fuss was about. I decided to give the gym a rest (who am I kidding, I wasn't really planning on working out anyway) in order to give this product a thorough test. 

Upon opening the mask, I was surprised to see how much product you really got. Usually you get cheated with a partially full container or a travel-size amount in a large bottle, but this jar was jam-packed with a dreamy pink cream! I dipped the tips of my fingers in the jar, applied a generous amount of the product to my butt, and started rubbing the cream onto both cheeks.

The directions warn that the product is supposed to lightly warm up, and after a nice lather I felt a slightly warm sensation. I also noticed that the mask dried pretty quickly, which makes it great for slapping on in the mornings even if I'm in a rush (or applying at night, since it won't annoyingly stick to bed sheets)…