I Tested the Most Ridiculous TikTok Life Hacks. 

Quick clarification: For the candle trick, the reason the water actually flows inside is because the oxygen on the inside of the bottle is used up, thus reducing the air Pressure! To check out the next episode of testing TikTok Life Hacks: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-iDdN5cOFB1g.html

The fact that arun tapes led light bar on his kitchen floor just to create an atmosphere shows how much work he put in.

Arun is always one step ahead compared to other youtubers. He not only tries all these tiktok hacks, but teaches us what the thing actually is or how it works. Top notch mate

4:02 THE BATHROOM 💀

“Just say next and it wor-“ “You out da blue need to use da bathroom” got me crying of laughter

For the hair dye to work you need to either use bleaching before blue dye, or use a dye that includes a lot of bleaching (which usually works less well).

I am an Irishman seeing potatoes being wasted almost gave me a stroke

I love how Arun was concered for his hair and excited for the last experiment. Right after it worked his tears of joy turned into real tears!🤣

0:45 That toothpaste is magical. It not only repairs the broken screen but even makes the phone rectangular all of a sudden.

9:07 Correcting a few stuff here. First of all having the inside hotter would only make the pressure inside higher. Secondly, that happens because fire needs oxygen to continuously burn as the oxygen use up the pressure decreases, pulling in the water around it to about 20% of he volume since that's how much oxygen in the bottle and atmosphere.

The bread and butter one was SO SATISFYING and I loved it. It made my mouth water too. I love u for doing that Arun!

3:48 I just thought of a way to use this to listen to music, and change the song without touching your phone, like when your in the shower Basically make it to where when you say like next song or next video etc, it presses the next video button

8:08 That is very, VERY dangerous. The only thing keeping the heating elements from melting and catching fire is the flow of cool air. If your hair dryer is old and doesn't have a safety system, it can burn down your house.

11:30 when u realize alcohol is flammable 💀

For the light bulb, I’m not sure if this is the problem, but you had the middle battery facing the wrong way

The guy with the I need the bathroom song on tiktok is the best 😂😂

The screenshot one when you change your rubbish circle to a perfect one, works with other shapes too (squares, triangles etc), but gets confused a bit when you go beyond a five-sided shape. Not sure how useful it actually is in day-to-day life but neat nonetheless!

That guy in orange at 13:01 looks like he wants to steal the moon

I like how you logically explain the flaws in some of these. We did the candle experiment in school but it doesn't explode like that tik tok claims

13:27 i love it when british people say this

For the light bulb trick at 7:10, even if the voltage was right it wouldn't turn on because the circuit is not closed. It's basically an open breaker

About the battery light bulb one: In the first clip, they connected positive terminals of the batteries to both positive and negative terminal of the light bulb, which means, there's no way for electricity to flow. In the 2nd clip, they've connected the terminals right(except for the 2 positive terminals touching together, that doesn't do anything in this case), but there's still no closed circuit, They'd have to connect the free terminals together to close the circuit (and turn the bottom battery around, so the positive terminal touches the negative terminal). So basically just running the batteries in serial connection to increase voltage to a higher amount. I've made a light bulb run on 60V from serially connected 9V batteries.

I think they test beforehand to make sure it's almost exactly half but one over so he gets the hair and the viewer gets the reward for staying tuned

9:40 Reminds me, when I worked at Starbucks we would heat milk jugs up with the steaming wand on the espresso machine to make squishing the jugs much easier. Legitimately quite useful. Also that RAM one was brilliant 🤣

12:21 He literally puts in the Konami code on the claw machine lol

12:48 Vector lmao! OH YEAH! You just got vectored!!!

for the ruler trick, using a wooden one, and using your hand to punch it as hard as possible, it can snap in some instances. its because its spread force alone the paper.

This is amazing The candle and screen shot one is really cool😊

13:36 Did he just say “Nein!”

10:30 lol

Congrats on 16 million!

We need more of Josh he's so funny😂😂😂😂

8:15 - the hairdryer isn't broken, it's just a fail safe that shuts down the dryer if its airflow is poor or it gets too hot. The spark is normal when safety engages, leave it for a few minutes and it will work again.

9:57 "that's what she said" guess no one else noticed, that's why the reply rte is so low there

This is the best video I ever seen thank you so much

“Why do you need to the bathroom”😂😂😂

Definetley want to see more of the team in your videos... If Arun on his own is great then the team would surely be entertaining

Hair dye doesnt really dye dark hair that well so you need to blonde/bleach the hair first but anyway, great video!

The candle trick is just the candles fire taking air minimizing air pressure, which causes the atmosphere to higher the pressure and therefore creating a suction force trying to pull in air, but there’s only water so water goes in

I love how in the left corner the whole time there's a picture of him with blue hair. You don't even need to watch to find out

This is what sets Arun apart from the rest of the crowd. He doesn't just do a thing and shows it working or not working. He explains why it works or if something doesn't work, explains why it doesn't or how it has potential to work if done a bit different. Top notch content.

11:22 his home is like a palace

I need this man as my physics teacher 😅😅

4:00 tho

At 7:20 the bulb doesn't work because it is not a closed circuit. doesn't matter how much voltage they provide, current will not flow

he literally looking like he's about to say "ahh perry the platypus!

When cat comes up to the table Arun smile🤭😂

7:11 This reason for why it doesn't work is not wrong, but it's definitely not the main one. The circuit is just not completed, so there is no electricity flowing. To complete it you'd need to connect the negative poles of the batteries to the light bulb as well.

Someone had to say it... The reason at 7:09 isn't completely correct... as the 1.5V potential difference has nothing to do with the trick not working... It's simply because the circuit is actually open.. so no actual current flows through the lamp. :)

in the 5:20 moment you showed like that apple fixes you circle in a screenshot drawing, and i checked it and it actually woeks with any other shape! worth a try!

8:18 the hairdryer was sparking because it needs the airflow to cool down the heating element and prevent it from melting, restricting that airflow resulted in that heating element melting and since the heating element is also resistor limiting current to the motor in the hair dryer it stopped working completly.

11:10 everyone has done that at least once

6:28 this one explanation now makes me really want to see Arun do a crash course series

The light bulb and battery one doesn't work because the circuits are not closed/connected, the voltage issue is secondary to that, but without a closed circuit, the electric field can't extend and flow. Additionally, even if they were connected, you had all of the positive ends of the batteries in contact with the light bulb so the batteries orientations would have prevented the circuit from being closed, so either the batteries touching the bottom would need to be flipped or both the batteries on the sides. Regardless, still not enough voltage.

Amazing job mate

You never seem to disappoint. Thank you for lightening my day

13:21 Mickey!! 🤣

You're supposed to strip the color out of your hair before you use that kind of hair dye. I used to use it all the time when I was younger. There is/was a product called seventh stage I used to use to strip all of the pigment out of my hair before putting the blue gel dye in. Since the bright colors like this usually only come in a one-part semi-permanent dye they generally do not have the same developer and other ingredients that let it really chemically replace your current hair color. So you have got to get rid of the current color first and start with it as light as you possibly can. On top of bleaching or stripping your hair first, It's also best if your hair is as dried out as possible when you put the gel dye in (the blue stuff) And then you always want to let it sit for a little bit longer than the bottle says, and then without rinsing you add conditioner first and a lot of conditioner run that through and then rinse lightly WITHOUT ANY SHAMPOO AT ALL and dry it thoroughly with a towel that you don't care about because it will shed some dye for the first few times you wash your hair. That's just how those semi-permanent dyes are. It will also shed a little bit anytime you use hairspray or any alcohol based hair product or anything particularly acidic or corrosive or that "opens up" your hair (kinda like how heat opens up your pours) a lot... Enjoy. Love you guys. Kay byeeeeeeiiiiiiii

My guy just turned into a physics, science, ICT teacher in like- 15minutes🤣

8:54 I got life insurance ad here 🤣🤣🤣

The spark inside the hair dryer was the thermal switch stopping the whole case from melting because of restricted airflow. It should come back on in a few minutes

 IM OBSESSED IT WORKS

first he says the heat will make the volume smaller (which is wrong, it is because of the oxygen burnig) then he says the air expands and make the cork fly up XD, I love his vids

9:23 I knew about this one. I worked at Starbucks for about 6 years. We used to steam the milk jugs with our steam wand so that we could crunch them up quickly and make more room in our recycling bin. It’s astonishing how small they can get 😂

11:13 Arun: *Clearly spills wine Also Arun: "It evaporated"

The video... I NEED TO POO IN THE BATHROOM 💀

YOU ARE ACTUALLY THE BEST TECH CHANNEL! Keep up the engaging and entertaining content! How did you make the part at 2:26 where the fried egg flies off screen like a "Star Wars Plane"?

13:05 bro man looks like the nerd from minons LOL

I like how this series is just a way to have Arun try different things to do with his hair and monetize it 😂

the one with the lightbulb probably also has to do with the fact that they put + on + and that obviously doesn't work

This guy is science technology teacher (compliment)

Fun fact :the combination at 12:25 is literally the konami code💀

The marker trick is kinda true. Yellow and green highlighters are very visible under blue filtered light (much more so than in regular light) which stage technicians use to for example make notes behind the stage where we can only have a little bit of blue light. Yellow light would often be visible to the audience. It's a bit different between different highlighters though how well you can see them, and I have never tried diluting one...

i like how he also explain why does or does not work instead of being just no way it worked

i just saw an opera GX browser ad with you in it while watching this video with you in it lol

For the squiggle hack, it also corrects triangles and squares if you draw them and hold as well. Also a straight line if u were underlining something.

he is good at hooking people in. his vids dont get boring and stay entertaining the whole time

you didnt do the lightbulb trick the same as the tic tok you messed the battery placement

for the paper on the ruler its just that the atmosphere is so heavy

Intrigued by this one!! 😬👌

10:30 I love how he just walks in, sees Arun doing a Tiktok lifehack, and just dips

Bro just became a scientist 6:19😂

4:01"Next. And it will scroll for you. The poo in the bathroom"

You know what I love about this video It's the fact that they take the time to actually go in to depth with some things like further explain instead of just checking the hack and getting it over with

Rare moment when I m here in 10 seconds

the paper also flexes back to the original position

Your explanation for the candle and bottle trick was in the right direction, but not exact. The hot air and other gasses floating upwards into the bottle are less _dense_ (due to the higher kinetic energy making their molecules push onto the surrounding air and away from each other more forcefully) but are not immediately of lower pressure. What happens later when you lower the bottle enough to choke the flame is that the existing hot air molecules in it start to cool down, which lowers their pressure at the given volume and thus they "contract" against the external pressure of the denser atmosphere; the resulting differential causes a suction which pulls in the water.

For the candle TikTok, we did a similar experiment in science class. It was boiling water in a 12oz can(small amount) making the can fill with steam replacing the cool oxygen. Then we dunked the van into cold water(opening first) which makes the water vapor holding up the can condense therefore making the can collapse on itself and crush. It was really cool but I had to wait like 15 min for the water to start steaming on a hot plate

thank you for testing all tiktok lifehacks it must've took you a lot of time ❤

The reason why the light bulb didn't work is because one of the batteries was facing the wrong way

6:23 well it has noting to do with the atmospheric pressure as it doesn't depends on the surface area. The real concept behind it is the viscose force or the air drag with depends on the area. 7:13 it doesn't work because the circuit is not closed in the first place. Even if we use 220V ac and connects its one terminal, it still wont work

12:41 some actually have codes to check if they work but it’s not like that

7:09 for the bulb to light you need to complete the circuit. even you have batteries totaling 230v, the bulb will still not light without a complete circuit.

I tried the hack. Where are you circle some thing on your iPhone after taking a screenshot. It turns out that any shape you make almost it will mimic and correct the shape. I just tried it with a star a square a sort of cloud shape, a circle and a triangle. My grandson and I are excited for you to try it!

for the candle bottle thing, its also because the flame takes some oxygen and helps suck up water

For a smart guy, your shock that water glowed when a light is aimed at it was hilarious 😂😂 Great Video btw 🙌🏼

The thing about coloring your hair is you need it to be bleached blonde, in order for the color to pop out. It's like adding blue to a black can of paint it's never gonna work. And for the color to pop out more you need to be really blond, like Targaryen white hair blond.

The scene with the ruler and the paper....you had no shoes on 😭

Physics and Chemistry debunking/teaching with Arun :) Loved it mate

The only RU-vid Tech Channel which never disappoints... Love your content ✨✨