If you’re one of the 50 million people who watched the simplynailogical videos putting on 100+ coats of nail polish, then you know nails can get pretty out of control. Well, we decided to take the 100 layers challenge idea and kick it up a notch by trying to apply 1,000+ layers of nail polish to a hand. Can it be done? Can we make nail art pretty enough to go viral on TikTok? Will HopeScope end up reacting to this “satisfying” creation? And will we reach the top of #PolishMountain? Today, loyal Theorists, we find out in this ultimate nails challenge!

Are caffeine skincare products worth it? Like, do the serums, scrubs, and facemasks actually give you as much energy as, let’s say, a Diet Coke, Monster Energy, Red Bull, or even coffee? Are you actually absorbing that energy through your skin? We put our caffeine addictions to the side to first go caffeine free and then test a new skincare routine. Just like Mia Maples loves to do with viral TikTok products and HopeScope with satisfying viral products, we’re experimenting with a whole new routine that could change the way we take care of our skins… or it may just be a bunch of bunk!

After seeing the fun videos full of fashion inspo from Ellbat (I Hired a $200 Stylist and $20 Stylist to Dress Me for a Week) and Mia Maples (I Hired 3 Stylists with Different Aesthetics to Style Me), we’ve decided to test the world of online personal stylists for ourselves. Today we’re testing Fiverr vs Stich Fix to see if any of these digital personal stylists are worth it. What is the cost? Can Ai really determine what we should wear? And can we actually find a new look in this process? C’mon, get ready with us as we try on a whole new wardrobe!

Which skincare products do YOU use, loyal Theorist? Neutrogena? CeraVe? Cetaphil? Pond’s? Well, you may want to take a CLOSER look at the label. It turns out that the skincare industry may have been lying to us for years about what’s really hidden inside of their products. Sorry, Mia Maples, but you may think twice before doing about skincare test video because this could change your daily skincare routine FOREVER.

The countdown begins, loyal Theorists. This is MatPat’s FINAL Style Theory ever. We knew we had to go out with a BANG! So, we’re looking back at Matt’s time on Style Theory, what we’ve learned, and whether MatPat has _actually_ become a real style icon by putting him to the ultimate styling test. Grab yourself a bow tie and let’s suit up!

Hello, loyal Theorists, and welcome to Amy’s FIRST Style Theory! Today we’re diving back into our favorite Style Theory setting: the bathroom. We’re testing the best ways to shave your legs with a fun experiment. Which is the best lubricant: shaving cream, soap, or something else? Is there a best brand to use, like Gillette? Well, by the end of this video, we promise that your legs will be perfectly silky smooth!

If you watched the Super Bowl, then you saw a whole lot of Travis Kelce, incredible coverage on Taylor Swift, and a very questionable ad on Temu. You probably remember the ad well, right? Temu: shop like a billionaire. It played, like, 500 times throughout the game. But can you _actually_ shop like a BILLIONAIRE on Temu? If FaZe Rug, HopeScope, Mia Maples, and the hundreds of other YouTuber videos have shown us anything about the brand, the answer is a strong NO. But we had to find out for ourselves. Will we walk around looking like tech moguls Elon Musk, Mark Zuckerberg, and Mark Cuban? Can we strut in a dress as expensive as Taylor Swift’s? Or will the Temu dupes make our space look like Kim Kardashian’s Sknn office decor with a bunch of Donald Judd dupes? C’mon, loyal Theorist, let’s shop like billionaires!

Have you ever thought, “why do I look bad in everything?” We promise, you DON’T! But one factor that could lead to you feeling that way is not dressing to your body shape or body type. So today we want to show you exactly how to find your body type. First we’re using various tests like Kibbe, Fruits, and Myers Briggs. AND then we’ll teach you how to dress no matter the shape of your body: rectangle, pear, or inverted triangle. Let us know your shape in the comments below!

Is your closet a MESS, loyal Theorist? Are your clothes all thrown about with no rhyme or rhythm where they should be? Or maybe you have a system but you feel like your closet space is just _too_ small. Whatever size wardrobe you have, we want to help you clean up your mess. So we're following the footsteps of Mia Maples and decluttering YEARS worth of clothes. This is going to be one intense closet clean out!

Theorist, does Gen Z look older than other generations like Baby Boomers and Millennials? Everyone on the internet seems to think so thanks to TikToker Jordan Howlett. But is it even true? Well, we that know Gen Z celebs like Reneé Rapp, Millie Bobby Brown, and Kylie Jenner tend to look older than they look, so that's a start. So then... WHY is this the case? WHY is Gen Z aging so rapidly? Today we find out.

A few weeks ago we, together with our friends at ZHC, Critical Role, Seek Discomfort, and Popflex, put on YouTube's FIRST ever creator fashion show. The event was a total blast and we enjoyed hanging out with you on the live stream. But now... we want to show you behind the scenes of what it REALLY takes to put together a fashion show. Let's find out!

You've been asking for months, loyal Theorist, and today we finally answer: which clothes would help you survive a nuclear apocalypse? With Fallout on Amazon Prime making waves in the cultural conversation, we knew we HAD to answer the question for you. Do we need super high-tech survival gear? Or can we just wear jeans and a t-shirt? Let's find out...

Your favorite influencer may be turning into Ai... No, we're not talking about Vtubers, we're talking about companies like Meta turning creators and influencers into Ai chatbots. From MrBeast to Kendall Jenner to Charli D'Amelio to Tom Brady, they've all signed some Ai rights over to Zuck. But what exactly are the Ai creators like Kwebbelkop, Lil Miquela, and others doing? How are they making money? And is ANY of this good for society? Today, Theorists, we talk about a very controversial topic...

How _waterproof_ is waterproof makeup? A little? A lot? Can your foundation last a trip to the pool? Would your eyeliner hold up against the harsh waves at the beach? And could your mascara survive a night of crying? Today we're putting these brands to the test to find out how to make your makeup waterproof!

Guess what's making a comeback, loyal Theorists? The MUSTACHE! The handlebar, the chevron, the english, the pencil, even the fu manchu. They're BACK! Today we discover why they've resurged and whether you should start rocking a 'stache too.

Are crocs truly the ultimate active footwear? After seeing @hopescope test out _every_ single Croc, from survival Crocs to Crocs ballet flats, we knew we had to try them out. Millennials started wearing Crocs as an everyday shoe, but Gen Z and Gen Alpha have taken it to the next level. Some members of Croc Nation, like Ash of @GTLive , are actually wearing Crocs to the gym! That's sport mode on a whole other level. Today we're going through a whole series of tests to see if Crocs can _really_ walk the walk.

Hey, loyal Theorist, did you know that anime has SECRETLY been influencing the world of fashion for YEARS? Think about it: big red boots, giant bows, and unnatural hair color. What do they ALL have in common? A link back to anime. In this video we'll reveal the secret influences of Dragon Ball Z, Sailor Moon, and more on our culture.

A few weeks ago, creator MiaMaples posted a video called "Temu Stole From Me," where she explained how the company took her name, image, and likeness to promote and sell a product. Sounds kind of familiar, right? If you've followed Style Theory over the past year, you'll remember our video about how SHEIN did something similar to Cassey Ho (@blogilates) of POPFLEX. If you follow @hopescope you may know she's posted multiple videos buying brands that stole her videos for ads. She was able to poke fun at the matter, whereas creators like Cassey, Mia, CassandraBankson, and simplynailogical all made more serious videos discussing the unfortunate topic. So what's the deal with these shady business practices from SHEIN and Temu? What happened and how do they keep getting away with it?

The Olympics have been SO fun to watch, haven't they, Theorists? Watching Simone Biles soar to gold in women's gymnastics, Caeleb Dressel rake in the medals in men's swimming, the USA women's rugby team shocking the nation, and every other Olympic athlete has been an absolute thrill. But, one thing that we questioned was just how optimal their uniforms are. Is there a better way to win gold?

Summer is, unfortunately, winding down and school is about to be back in session. But that doesn't mean the sun is taking a break. In fact, it's warmer than ever here in California. So Amy wanted to find out: what is the BEST and WORST sunscreen to protect her skin from the blistering sun? We're using different Vacation sunscreens, such as gel, spray on, stick, and even milk (ick). Who will WIN this sun screen test? Watch to find out!

When you walk into a Goodwill, Savers, Salvation Army, or any other thrift store and expect to find t-shirts for $5 but you're met with a $40 price tag instead, you tend to get a bit upset. What's the deal with these HIGH thrift prices nowadays? It can't _just_ be inflation can it? There HAS to be more to this story. Today we get to the bottom of these outrageous thrift prices.

Are you stinky, loyal Theorist? Well, stink NO LONGER because we're here to find the BEST deodorant in today' challenge. We're testing deodorants like Dove, Lume, Old Spice, Native, and even some viral TikTok oddities against some of the most INTENSE challenges that would make anyone sweat. Will we still smell by the end of the day?

If you're losing hair on your head, then you're probably looking for a way to regrow your hair. Over the last 5-10 years, many products have taken on the market like Ro, Hims, Hers, and the classic Rogaine. But do hair growth products actually work? Can minoxidil give you a luscious mane again? Or is everything a bunch of bunk? Let's find out...

Would you trust makeup from McDonald's, Cheetos, Dunkin Donuts, or Chipotle? If you saw it in the beauty aisle at your local Target, the bright packaging would probably catch your eye. Maybe you'd try it out. But... is it actually any good? Today Amy is trying unusual beauty products to give you her honest review!

Should you TOUCH GRASS? No, we're not insulting you. We literally are asking... should you TOUCH grass? Does going outside, pressing your palms against the luscious blades of grass, and sitting in nature actually have any benefits? Or should we all just stay inside forever?

Picture this, loyal Theorist: you just spent your well-earned money on a brand new, sparkling clean, white pair of Nike Air Force 1s. You wear them out to show your friends, and then... you step in a puddle of mud. Yuck, gross! Now you have to clean them. So, what is the best way to do it? Today we're testing all sorts of old wives tales and modern TikTok myths to find the best way to clean your shoes!

Loyal Theorists, what would you do if you opened up a mirror in your bathroom and found... a whole other secret room? That's what a few TikTok users have found in their own homes, and it's absolutely insane! So what's the secret behind these secret rooms? Today we find out!

Loyal Theorists, if you're a lover of spooky season and the Halloween spirit that comes along with it, then you're very familiar with witches. Think of the witch that comes to mind. Is she green and crooked-nosed with a pointy hat like the Wicked Witch of the West? Or is she more modern with cute clothes like Scarlet Witch or Agatha? Witches have changed drastically over the last 200 years, and today we're looking at the complete history of witches and why they stopped being so ugly!

Theorist, look at your makeup bottle. They're all different shapes and sizes. Brands like L'Oréal, e.l.f, Maybelline, NYX, and Sephora all have various bottle types, and we're trying to find the one that gives you the best BANG for your buck!

Theorists, Dress to Impress has taken over both the style and gaming niches on YouTube, and we wanted to join the action. Maybe you've seen our GameTheory video about the Dress to Impress Lore or seen your favorite channels like KalogeraSisters, ItsFunneh, or callmehhaley play the game... well, we're answering a much different question today. Can Dress to Impress ACTUALLY Teach You How to Dress IRL?

Is conditioner actually good for your hair? Some people SWEAR by it. Some people can't stand it. Some people just like to do the 2-in-1 shampoo and conditioner and call it a day. Wherever you stand, prepare to be challenged by our multi-round conditioner hair experiment. We're back in the bathroom for another test!

Loyal Theorist, have you seen the recent contrast filter popping up on your TikTok for you page? Because we've seen it EVERYWHERE. So we had to find out if this actually works to help with your daily style. Are you low contrast, medium contrast, or high contrast makeup? Let's find out...

Should you floss your teeth? Yes! We found that answer in our $1 vs $300 toothbrush episode. So then, what is the best way to floss your teeth? Will regular dental floss do the trick? Or should you use something like a waterpik? Today we're testing dentist recommended vs tiktok recommended flossing methods to see which is the best.

Theorists, can certain outfits and accessories help you feel less stressed and anxious? If you've been scrolling TikTok recently, you may have seen the viral Comfrt hoodie, which is supposed to help you care for your mental well-being. It's smooth, it's soft... but does it work?!

Wicked is absolutely dominating the box office right now, and with good reason. It's an absolute bop. Ariana Grande, Cynthia Erivo, Jeff Goldblum, and the rest of the cast crushed it. But I left the theater with one question: why is the witch green? And could you or I turn green in the real world? What would that take? It's time to defy gravity with this theory...

Theorists, imagine wearing a shirt that is stained in the armpits or a pair of jeans that has a pee stain in the crotch. You'd probably feel pretty embarrassed, right? Well, what if we told you a company is making these stains ON PURPOSE for you to wear as fashion. Would you be embarrassed to wear that in public? Today we put oopsie clothing through a social experiment.

Could you make Sonic's shoes in real life? The blue hedgehog has gotta go fast. But his speed is probably a lot faster than you'd think. So, can any materials in the "real world" actually hold up to Sonic's INSANE super speed? Just like we did with Hulk's pants, let's break down the science of Sonic's shoes.

Everywhere you shop this Christmas season, you'll see gift sets. At Target, Sephora, Ulta, Bath and Body Works... gift sets, gift sets, gift sets. They're certainly cute and make for awesome presents. But are they actually WORTH your money?