Does Purple Really Make Your Teeth Whiter?

[@tims8603]

I remember a long time ago, my mother would add something called 'bluing' when she was washing whites. I asked her why and she said blue makes whites look whiter.

[@mhtweeter]

yup detergents automatically do this nowadays

[@coriscotupi]

Same here. I remember (talking early 60s) white clothes being immersed for a certain time in water with a blue dye dissolved in it, then left to dry under the sun. This was supposed to make them whiter.

[@tims8603]

@@coriscotupi Yeah, same time period for me.

[@prumchhangsreng979]

@@mhtweeteryep. This has been a thing for a long time alr. I remember back in prob grade3 or 4. Im in one of those Asia country where school uniforms is white shirt. When i buy a new shirt, i notice that the old shirt look white but have blue tint to it. I have no idea why would a dirty old cloth look blue. Then i found out that the cloth washing powder added some small blue dye to it so that it counter the yellow tint of dirty old cloth.

[@Briaaanz]

Still recommended for nurse white uniforms actually

[@jerotoro2021]

Even better than just adding blue is using optical brighteners, which absorb uv light and re-emit it as blue, so it's not just white but BRIGHT white. Laundry detergent, paper, and old carpet cleaning products use these all the time.

[@Wtfinc]

Toilet paper glows in the dark

[@The-KP]

@The Action Lab forgot to set the yellow subtract filter in Adobe Premier

[@tictactoe101]

That's cool knowledge, never knew it, thanks

[@liza3337]

I think it was the old Downy commercials that would actually say, "with bluing for extra whitening".

[@MrSharkBait561]

I'm so tired of false advertisement

[@Hamsterbuds]

the toothpaste is good, But the v34 color corrected is fake

[@stupidpointlesstvof]

@@HamsterbudsFunny thing is that it’s NOT tooth paste. They make it very clear on the bottle and their website that it is not suppose to be used as a substitute for toothpaste. In other words… ITS USELESS

[@Alchahol]

Get ready for it to get worse

[@noobstalker1]

@@stupidpointlesstvofit does not

[@EvilWizardWeedSheeee]

​@@stupidpointlesstvof I mean he just concluded in the video that it does make your teeth look more white by negating the yellow but it also makes your teeth less vibrant as a consequence

[@MikeSimoneLV]

I'm so glad you did this video! It didn't seem possible, but I figured if anyone would do a great job explaining the science behind it, it would be you. ❤

[@abnnuzzinicholasclay686]

All I seen was a commercial for skin care. On top of another video explaining light spectrum again

[@sharedknowledge6640]

Yes we need more people exposing the fraudulent lies too many people are fooled by. It’s like those 10,000 lumen $15 Chinese flashlights on Amazon have also been proven fake. It helps prevent at least some people from wasting their money. It’s unfortunate the FDA and FTC are not better funded to go after more of the fraudsters.

[@charbladex]

The other problem is even *if* it worked, it would require that it be staining your teeth with a purple in order to actually counter the yellow staining that is there. Simply putting purple on your teeth then washing it away would defeat all the purple in the first place

[@RogerCanda]

@@abnnuzzinicholasclay686ideas to fool consumers

[@andywhtwo000]

Everything you said was spot on. I painted cars for 15 years. An easy way of reducing the chroma or "saturation" of a certain color tone it's by adding the apposing color on the color wheel. And to make a white look cleaner a blue or purple is an easy way to do so.

[@lahaya237]

this is what we need, people fighting scam ads.

[@adrianbik3366]

While unfortunately introducing new ones. Perfectly balanced

[@calebrobinson6406]

​@adrianbik3366 the microcurrent thing is legit, no?

[@alana314]

Yeah that was an unfortunate choice for a science channel

[@bigbeans202]

​@@adrianbik3366this is sad, you disregarded it without even reading a single study. Super easy to look up too. First result was the National Health Institute.

[@lionedheart]

So basically the purple tooth paste to make the teeth white is a scam?

[@Phoenix-tc6dp]

you literally just made me understand color theory better then then other artist on this platform

[@easygoing4964]

trucking true

[@TOOKSTAH]

You were so impressed that you actually stuttered lol how???

[@Phoenix-tc6dp]

@@TOOKSTAH AINT NO FUCKING WAY 🤣🤣🤣🤣🤣

[@pro_gemer]

Im sure oridays has one, the guy is awesome and so are his tutorials/guides

[@hermi1-kenobi455]

than

[@hamstereyes]

Brave man, putting that stuff on your teeth, your sacrifices for science! Thank you so much for helping me learn. Yes please do the additive / subtractive color video

[@julioespindigon]

That ad has kept coming up in my feed and I wondered if it was BS. Thank you for clearing that up 🙏🏼

[@cainemarko5021]

ok... now I'm going to need a debunk video on your sponsor's anti-wrinkle claims... 😉

[@Phethario]

Was thinking the same. :D

[@eekee6034]

What's actually wrong with the process; why does it not work? I can think of one possible reason, but it's kind-of iffy in itself: the signs of aging happen because cells lose track of what they're supposed to be. Where it gets iffy is the question of whether the immune system will attack a cell which isn't what it's supposed to be, or whether it'll just assume it's meant to be what it's become.

[@anomaly3215]

I'd love to see your research debunking his information on skin tissue repair

[@oldfashionedyoungin4972]

lol was thinking that as well

[@SortofMax]

wow! The Action Lab is just so interesting to watch plus i get some extra knowledge from him. Thank you The Action Lab!

[@robertprichard1171]

Let me debunk a BS product while selling another

[@TheXeRoHomeAu]

Was just thinking the same thing

[@erikfontaine1979]

When my daughter was 4, she got a stuffed animal that was yellow. When she brought it to sleep, she freaked out because it had turned black under her dimmed purple night light

[@vincentdreemurr]

is it just lighting? that sounds unfortunate

[@darkdragon1194]

​@@vincentdreemurryes, it's just lighting. Yellow light has a wavelength of around 570-580nm. Purple is around 380-400nm. For an object to appear a certain color, it must absorb most frequencies of light OTHER than the frequencies associated to the color that object appears as. The frequency of light that the object appears as is reflected instead of absorbed. So if the purple night light is monochromatic (only emitting a single frequency of light) than anything that does not reflect purple light would instead absorb it and appear black.

[@Mr.Anders0n_]

​@@darkdragon1194yeah, I discovered how some things look different under different light colors when I got LED smart lights. LEDs emit narrow and specific wave lengths, making color mixing effects more dramatic

[@eekee6034]

Today, I learned that night lights for children should probably not be saturated colours. But I know I'll forget if I ever have a kid, and any kid of mine will probably be freaked out by this. ^.^;

[@MADARAUCHIHA-ol7dc]

In india,we use a commodity called ujala,which is actually a purple liquid,in this,we dip our washed white shirts to make it look more brighter__thanks for letting us know the science behind this✌️🙃

[@THEmickTHEgun]

I'm currently studying IT and have recently done some learning on printers and monitors and I didn't realise how in dept colour theory was. I'm glad you also covered this in this video.

[@babybirdhome]

Oh man, if you’re learning about that in the context of monitors and printers, you haven’t even dipped your toe into the ocean yet. It’s nightmarishly complicated! Next you’ll start learning about CMYK in addition to RGB, then the kelvin color temperature scale, color rendering index or CRI, Adobe, Pantone, and a whole host of other things just to confuse you even more when it comes to calibrating displays and printers and cameras/photos and graphics. It’s no small miracle that anything actually looks like it should, and that colors match as intended - there are a lot of geniuses out there who’ve worked very hard for over a century to make all of that work so well that nobody outside of those industries even thinks about it anymore. Actually one of the coolest things about it is how much of that has come from artists rather than scientists. Ultimately it’s science that’s made it work right, but they got a huge head start because of the work of a handful of highly influential artists over the last several centuries. There’s some pretty great videos on KZbin by some artists who go over light and color theory in terms of painting and drawing - very _very_ counterintuitive and remarkably awesome to learn!

[@Exilir8]

Hey, so am I.

[@VoltisArt]

Color theory also bleeds into psychology. It was used extensively in Breaking Bad to show each character's emotional state in the particular shot. Rewatch knowing this (and the stuff above re: RGB / CMYK) and it changes how you see the show....and everything, lol.

[@Rompler_Rocco]

Next, let's debunk the electric skincare device and read an ad for purple toothpaste 😘

[@seionne85]

I imagined the tooth paste working like hair toner, which I know from experience really does make orange-yellow hair more of a platinum blond

[@sarahhoffman7801]

Same. However, we do know that follow up with the magic shampoo or else it fades back to yellow/orange eventually. So maybe people will have to use too much like they often do with the magic shampoo.

[@vincentdreemurr]

i thought it was straight up just coloured acid

[@franimal86]

Learning red, blue and yellow are not the primary colors in subtractive coloring was thanks to some KZbin vids. Most of the time, don’t believe what you see and read online, but when I tried mixing yellow and magenta at home to see for myself, I was amazed to see a beautiful bright red staring back at me. Don’t get me started on how magenta and blue make a much more vibrant purple than any red and blue combination ever did. Purple is my favorite color so that’s a big deal for me.

[@solandri69]

First part of your video comes really close to a color perception video I wish you'd do. One that explains the white/gold or blue/black dress. Your brain constantly does an auto white balance (adjustment for the color of the light) based on the expected color of what it sees. It transforms your color perception to match what color it thinks the light is. If a scene or photo lacks sufficient lightning cues, it's possible to get two people to simultaneously see completely different colors. In the dress picture, those who assume the light is white see the dress as white/gold. Those who notice the tiny bit of background in the photo see it is yellow and overexposed. Their brain assumes the light is bright yellow, and they see the dress as blue/black.

[@cybisz2883]

What of those folks who saw the dress as baby blue & muddy brown - the actual colors of the pixels themselves?

[@DawnDavidson]

@@cybisz2883*raises hand* Me too!

[@iluvpandas2755]

They ignored the background

[@iluvpandas2755]

Or zoomed in very closely

[@pamelatify]

The purple shampoo is designed to make your hair less BRASSY. It tones out yellow or brassy highlights and makes them darker. Brassy highlights are unwanted.

[@skylerthacreator]

here's the trick for when i'm painting with purple and yellow. shadows are naturally blurry, so i always paint shadows with lazy rules, and if you put dark purple in a dark shadow, near a bright yellow or orange, it just looks prettier and you can hide the purple easily. feels better edit: they use that purple stuff in hair products to make it all glistenny and shiny as well

[@Jupiter0ne]

Though not used as much, "bluing" is still around for laundry. As you alluded to, it also used to be used in older women's hair which was white. Hence, "blue hair" is slang for and old lady.

[@zerocalvin]

the main reason purple and yellow are complimentary colors is because purple is the combination of red and blue, all complimentary colors mixing involve one color that is a mixture of the primary, so when you mix in the leftover primary, you'll get black. however the best way to darken yellow isnt the use a complimentary, but is to mix in a blue bias brown like burnt umber... that is because yellow object dont produce black shadow, they product dark brown shadow that just look black to our eyes...

[@butterflyeffect1036]

Sad part is the product actually works, just not in the "blink and you'll miss it" manner portrayed in the ads. I started seeing notable whitening after a week of use. The team responsible for promotions might have singlehandedly ruined this product.

[@JordanICM]

Kinda hilarious him debunking a fraud video then doing a sponsored advert for a miracle age reversing massager.

[@NukeMarine]

2:34 Love that magical changing shirt.

[@Strype13]

So, in other words, they're providing a flagrant example of false advertising. Willfully lying to their viewers in an attempt to gain monetary profit. A horrible practice that should come with legal repercussions. Screw those people.

[@coryswanson2247]

“This white banana thing is a total scam!” *Proceeds to advertise a scam wrinkle eliminator*

[@onepcwhiz6847]

Wait. The purple doesn’t work for color but the electric shock device works for skin wrinkles? Is this April 1?

[@RobertoFabrizi]

I'd be up for the substractive color theory followup!

[@GigsTaggart]

he has no clue what he's talking about. Subtractive mixing is well understood science. RYB primaries art teachers talk about are just wrong and obsolete.

[@us3rG]

​@GigsVT lol

[@nerdnam]

In your subtractive color video, get some Dioxazine violet (Winsor Violet) and Phthalocyanine green (Winsor Green Blue Shade) from Winsor and Newton and mix them. You will get a blue shade.

[@I.____.....__...__]

Another application is in manufacturing and art, adding a hint of blue dye to slightly-yellow plastics or resin can neutralize the yellow look. That said, it does NOT make the plastic or resin look white, it makes it look GRAY.

[@DanielLCarrier]

It doesn't matter whether you use additive or subtractive colors. Complements are the same. Either yellow is a mix of red and green and the compliment is blue, or yellow is a primary color and the complements are magenta and cyan, which mix to blue. The only way you get purple is if you make the primary colors red yellow and blue, and that's not right for additive or subtractive colors. But they teach it in school for some reason.

[@hhsyw]

I was really DISAPPOINTED when the BANANA didn't turned WHITE when you TRIED it 😔😔

[@xizumix]

Yeah, I was about to do it to MY Banana when I realized from this video that the AD isn't real😢

[@jonathanbojorquez8395]

Lmao, the caps on this comment are so random it looks weird

[@jonathanbojorquez8395]

@@hhsyw like what?

[@TheRealityWarper08]

I was really BANANA when the WHITE didn't turned TRIED when you DISSAPOINTED it 😂😂

[@jonathanbojorquez8395]

Why did he delete his comment

[@Defensive_Wounds]

Well, some of this can work in make up, to hide bruises or stubble on the face, you use orange as it s the opposite of the colours you are trying to hide - that being blue/purple. Vice versa, if you have a red spot on your face, using blue/purple over it will hide it.

[@annanay007]

But then it may turn black isn't it?

[@Dodl1]

And green against those cheeky red spots. Works well for some reason

[@voixlavoix]

It's not the same as that is coverage.

[@katrinabryce]

Makeup artists generally recommend green for red spots.

[@eekee6034]

I'd love to learn about the issues with subtractive colour mixing. I've long noticed that useful colour wheels differ from the simple hue circle easily generated with RGB, but I don't know why. They were using indigo and the cobalt-blue smalt to whiten clothes in the 18th century. Indigo was harder to use, but that's not anything to do with the color difference. It's because indigo as a physical substance is a dye; it can permanently change the clothes color if you're not careful. Smalt is just very finely ground cobalt glass. Purple shampoo? Maybe it's a regional difference or maybe things have changed over time. All the old books I grew up with called it "blue rinse". This was also the name on the very rare occasions such secrets of the well-kept mature woman were mentioned around small boys. ;)

[@donotreply8979]

He messed up additive and subtractive colors. Subtractive is the cyan yellow magenta, additive is RGB

[@SheepStar8]

Thank you and both systems use the same color wheel. Red, blue, and yellow being primary colors is a very prominent color theory myth.@@donotreply8979

[@DaleWheeler]

Your ease of explaining things turns me green with envy!

[@emmswarega]

Bro Ended Racism With One Statement 6:24

[@blackpurple9163]

Does purple turn a banana white? Anyway here's a solution to wrinkles, enjoy

[@xizumix]

It's called advertisement

[@youdontknowme5969]

Bear??? Looks more like a frog.

[@blackpurple9163]

@@xizumix damn I didn't know that

[@blackpurple9163]

@@youdontknowme5969 frog's shiny metallic ass

[@philwoolley2648]

Pretty sure my kids and I stood in line right in front of your family at Lagoon yesterday. I was going to ask if you were that KZbinr guy (I couldn’t remember your channel name at the moment). Hope your family had a good time. My son would’ve love to get a pic with you but I didn’t want to bother your fam and now my 10 year old son is disappointed. Keep on making awesome videos!

[@TheStrykerProject]

Thank you so much for this video and videos like them. So many people fall prey to these advertisements and hopefully this video will save some folks a few dollars. Now, I know you didn't outright say the product is bogus, and instead hedged your bets...for exactly the same reason they can get away with advertising this stuff: it's totally subjective! Anyway, thanks again! p.s. I've enjoyed your shots for quite a while now, and this video won me over to finally subscribe! Keep up the good work!

[@brandondiaz1099]

Still one of the most helpful scientists out there

[@TheDigitalGuerrilla]

Are we getting ads from another universe with different physics rules?

[@paintcandan5972]

sometimes the epoxy resin that crafters and woodturners use can yellow over time so people add purple or blue dye to it when mixing to neutralize the yellowing that occurs.

[@redacted6580]

Debunking a non scientific beauty product while simultaneously selling a non scientific beauty product

[@__diegoortega__]

😂😂😂

[@anomaly3215]

one has research lol

[@blackcheetah9220]

There is also purple shampoo for cleaning white or grey horses, and this just explained to me why that was.

[@jameshatton4211]

Yes I used to use it on my flea bitten grey colours Arabian at horse shows! I'm 41 now but when I used it I was about 15 so it's going back a long time now...... I'm only going off memory here? I think it was called "Lincoln magic white"

[@KevinVA1989]

Debunking fake products while promoting fake products. Nice

[@rehab_herr]

yeah that pissed me off aswell, thought it was a joke at first

[@CoolDudeClem]

Of course it doesn't work, TikTok is all fake. I remember when that was a pop song and when people started mentioning TikTok I was very confused for a while.

[@__seeker__]

I’ve seen these hismile ads 20 million times. It’s obviously nonsense. I’m so glad you made this video. You were far more polite than I would have been lol

[@TechtodaProductions]

I remember the dentists flouride treatment at the end of my appointment was always purple when i was a kid.

[@tonyclif1]

Surely you arent suggesting that advertising that sounds too good to be true is ...um, .... inaccurate?

[@dhruvishavyas04]

The yellow colour chnges or not but at 3:34 the tshirt changes 🙂

[@Frankie_2s]

According to lil wayne purple makes your teeth gold

[@Darkice77]

I use a whitening shampoo on my Komondors and it really brightens them up. It is dark blue to start out with. I is very noticeable after i use it. I didn't know it was just hiding the yellow.

[@justanothernoobe]

Great video - if only to call out the false advertising of purple turning the banana white. We see a LOT of dodgey claims these days. Even the BEAR device ... is it actually having any impact on the reduction of the wrinkles or is it the "serum" that's doing the magic? And is the "serum" really just moisturising cream? 3 months ago I had really dry, creased skin under my eyes - it almost looked ready to crack. The problem was I was only getting 3-4 hours / night of sleep and was dehydrated. Some simple moisturising cream, drinking more water and giving my body a decent night's sleep (7-8 hours) fixed all of that within about 3 days. So I'm more than just a bit sceptical about the BEAR device and also whether people really need to spend unnecessary money on a device that's not achieving anything that's not already possible at a fraction of the price. It would be great to see a comparison of two people with similar skin conditions and dermal composition, age, etc., ... trying the BEAR solution vs normal moisturing cream, water and a cold face-roller.

[@raw_pc]

If the tiktok reel showed at 0:05 was real then not only the banana would turn white but also his beard which is in the same hue range. People just need to be a little more observant.

[@foxxtail06]

I used to work in transportation for elder people and noticed a few elders had purple hair under the sun. I thought they were just trying to be hip. I didn't think purple shampoo was a thing

[@tjvuuren8136]

I was planning to buy this product. Thanks for saving me from wasting my money.

[@LittleTreeX]

"I hope you learned something." yea, I learned that my gut instinct to not trust social media ads is 100% correct. Hopefully you saved some people who don't have the same level skepticism.

[@ashishlukka]

You should have brushed the other side of teeth with regular toothpaste. May be at the end cleaning teeth is what making a difference not 'purple' or 'not purple' tooth paste..

[@HerrFrankenstein]

Fluorescent Brighteners also make your laundry look great... It's all true, a boost to the blue end of the visible spectrum makes your socks seem clean... Right On!!!

[@ayoCC]

Pigment adds to black with cyan magenta yellow, light adds to white with red green blue When adding lights you go from darker to lighter. When adding pigments you go from lighter to darker.

[@Raye938]

It seems to me The Action Lab and Steve Mould are slowly converging onto the same style. I find each new episode form each fascinating.

[@wilsonaguiar4646]

Great on color explanation. I actually commented on that ad because it's bogus as the most common reason teeth are yellow is because of foods drinks of dark colors as well as plaque build-up over time. What bleaching does is open the pores in the enamel, allowing all that build-up dirt over time to come out returning your teeth to their original color, which in most cases is white (but not always). The ad makes it seem like teeth just turn yellow as if it's a color, but it's more than that.

[@angelamanganelli9566]

This is such a great lesson for a color theory class

[@sumbhouti]

Thanks for this, those ads have been bugging me for the same reason

[@J.Tronix]

Subtractive coloring is definitely a must watch

[@ImARealHumanPerson]

Lmao

[@jaksantio1441]

I'm glad someone finally addressed this. As someone who knows color theory I've been seeing those ads and screaming; "THATS NOT HOW COLOR WORKS!!!" at my phone.

[@craigtevis1241]

Printers use the correct subtractive primaries - magenta, cyan and yellow. Magenta is the absence of green light, cyan the absence of red light and yellow the absence of blue light.

[@ZeroXSEED]

Blue to white has been a well known optical illusion for us in developing world. We have old blue detergent for this. Modern detergent no longer do this due to using actual bleach to improve whiteness while also having color bonder to improve color contrast on clothes.

[@KX36]

The irony of a video debunking a healthcare scam, sponsored by a different healthcare scam...

[@z1770]

This is something we do in photo editing to change the white balance. Photos shot with a cheap light setup at a lower temperature can be made to look natural by varying the color tint.

[@CynicalBellow]

Debunks one useless product, makes an add for another while doing so... *flush* there you go

[@symbiosisapp2127]

Awesome video, maybe it could have been measured by taking the rgb values from an area of the teeth applying the product in one side and traditional tootpaste in the other? I mean using the color theory as an argument to "whiten" the teeth seems sketchy, but some actual nerdy measurements would have been interesting. Also, what other properties does it have? Like fluor, something abrasive, alcohol or is it just some type of pigment? Love to see it when you apply the scientific method in your videos.

[@DANGJOS]

I think you should try a bluer filter. Something that is either violet or indigo in hue. This would have an average absorption peak around yellow, rather than green. It is actually possible to get something that shines with a certain color to shine white, if done right.

[@TheActionLab]

If you perfectly chose the filter color that absorbed only that one type of yellow and also had a banana that was also only that one specific yellow color, then the banana should be black. All light that comes from the banana is absorbed by the filter. For example, let's say instead of a filter, we only illuminated the room with a violet light. Then the banana should abosrb that violet light and look darker than anything in the room that is the color white. Anything that has a color is absorbing some light from the room so that if you convert it to a greyscale it should be darker than a "white" object. So no matter what it should be darker than his shirt.

[@DANGJOS]

@@TheActionLab Ah I think you're right. At the time I was thinking of the time I got a light shining through Rhodochrosite to appear white when passing through a cupric acetate solution. But the difference there is that the Rhodochrosite allows both cyan and red light through, with an excess of red. When the cupric acetate solution absorbs the excess red, you're left with approximately equal amounts of red and cyan light, which gives you white. You definitely do not have that setup with the banana so it's not possible. To be fair, I was in the midst of sickness when I typed that (the flu probably).

[@sotosboi]

I hope these scam products get banned.

[@jessemarchand5694]

Thank you for doing this. I knew it was fake but still wanted to see the science.

[@mic9657]

Such a great explaination of what should be obvious, but clearly isn't to so many

[@allanhindmarch7323]

Cool video. Been seeing those ads too and thought they were bogus too.

[@mihaibalint8183]

350 Euro that device? what a ...?

[@dgoddard]

5:32 has to be the best thing ever put on the internet. Ever.

[@Vintagesonic1]

In all fairness, your teeth were already pretty white to begin with, so it's unsurprising that there would be minimal difference.

[@VicenteOrduna31]

basically, physical colors or paints mixing together will give you negative reflection which is black. And while light-beam colors will result to light spectrum that gives White.

[@rbkdevil]

try with 2 lights(yellow and purple), may be it can work

[@jaybingham3711]

Yep...learned me up a few things. Much obliged.

[@antimatterhorn]

many laundry detergents actually use phosphors to make whites luminesce in UV light from the sun.

[@glowbright]

you should bring back myth busters for the next generation my man!

[@Circa1775]

The only thing I've seen this work on is white frosting that has a slight yellow tint and adding a drop or two of violet food coloring and mixing it in a mixer will make it a pure white frosting.

[@EvilWizardWeedSheeee]

I almost bought that stuff out of curiosity just to see if it actually worked at all but glad someone finally made an in depth video on it so I didnt have to test it myself. If you want white teeth just use whitening toothpaste regularly and also go by your local dollar stores and see if you can find dollar store brand whitening strips. My family member managed to find a brand at a dollar store that had the same ingredients used in crest white strips only they were way cheaper so I got a bunch of boxes of that and Im starting to do a daily whitening treatment and after just two uses it made a nice difference. By the time I get through all 3 boxes and my box of crest white Im hoping ill have those hollywood white teeth

[@alana314]

I just got this ad and considered buying it, thanks for the debunk

[@thirdeditman9494]

I believe the video you showed was more about polarized light rather than its pigment, you can get things to look purple or yellow with just a few polarizers.

[@paulvinoski8023]

JAMES! My daughter and I noticed when you held up the petri dishes that your left hand looks much older than your right. Sun damage from driving? Put a UV blocking film on your car window or put some sunscreen on your left arm.

[@MJR_ATX]

Interrupting a snake oil product debunking video to sell another snake oil product is perfection

[@avelkm]

I think you have missed one important thing, though you put a text in post that's almost impossible to read, it's not the whole picture. Bluing agents added to clothes are working in partially additive "mode" as they are fluorescent. Yes they glow blue in UV but also convert some of the visible light to blue, thus correctly "cancelling" yellow in additive way. White clothes looks brighter for this reason after such treatments usually.

[@mastermiind927]

Man is exposing an entire company! 😂 doing a service to the whole internet right now 👍🏽

[@catfree]

This is like those videos that show you can make a B&W image have colour by adding a Red, Green and Blue filter atop of it

[@blzzz]

Damn has a scam ad during a video for scam ads yikes.

[@miguelangelcorderoramos-mu5wo]

Ur doing gods work sir

[@yodxxx1]

Fun fact: You can actually achieve what was shown in the video with the petri dishes. However not with diferently colored filters, but instead you need some polarized light, and polarized filters, and you need to angle them correctly.

[@DashsChannel]

I'm not as familiar with additive color mixing outside of computer graphics, but I presume the video with the white banana was actually shining purple light to add purple, rather than take away yellow. This video subverted my expectations quite a bit. I was already assuming the video was using After Effects and peddling a blatant scam, but it was so cool to see it actually worked. Or, the principle behind it worked. I also did not even consider the darkening of cracks between the teeth adding contast, but that is actually brilliant how the human eye will see brighter white when there is darker black adjacent to it.