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Women Try Color-Changing Hair

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- I believe it, guys. I believe it. (Laughing) (bright electronic music) I change my hair color just as often as people change their clothes. For me, it's just really
about expressing myself.

- I never used to color my hair, until this year. I started playing around
with some different colors, and I think it's really fun. - So today, we are trying
heat-reactive hair color. - I hear it changes color with heat? I don't know how that works.

- I'm a little bit of a skeptic. I want it to work, so I can just be like a dope ass person, walking around with different hair every second. But, we'll see if that becomes a reality. - My name is Lissette Cruz.

The type of heat that you could use are Pravana's Vivids Mood Color, spans from just walking into the sun, from touching it, breathing on it, blow dryer, flat iron. I'm so excited to show the girls, they are gonna be blown away. So this is one of our colors, and this is Tropical Peach, that turns into Transparent, which exposes the blonde piece underneath. This one in particular is Lime Green to Sunny Yellow.

You ready? - I think? (Bright electronic music) - (laughs) Oh my god! - What?! That was just with your mouth! (Breathes) - How does it do that?
(Laughing) (gasps) - Yo, this can get weird. - When it cools down, it goes right back to its peachy color. - Oh, and then it just changes. Ahh, this is dope! (Playful orchestral music) Oh my god!
(Laughing) What the fuck! (Laughs) (playful orchestral music) I'm gonna test this shit out, and I'm making my hands cold.

(Laughs) - This is crazy. I still don't know how it works, but it works. - I'm a little, I don't, I feel like I'm
about to get my letter to go into Hogwarts, because I'm a fuckin' wizard up in here. - This is gonna be so much fun.

I can't wait to go trick my co-workers. (Soft playful music) - Oh! Jazz! What? That's some magic, like
Harry Potter wizardry. - Blow, like, hot air (laughs) on my hair. (Breathes) - Yeah!
- Oh, wow! - Oh my god, look at it, it's changing! It's so cool! (Laughs) - Oh my god! - [Group] Whoa! - What?! - Wow! - Ben, touch it, I wanna see if it...

- What?! - Just put your cold hand on my head. (Gasps) - What? Oh my god. This is crazy! You should write, like, a 69. - I brought the hot water.

(Laughing) Whoa. (Laughing) - You're like icy blonde. You are my sister. - What the? What does that mean? It went...

- [Jazzmyne] Legit. - What? Look at her Olympics head.
(Laughing) - I feel like my hair is pretty greasy, 'cause people have been
touching it all day. But I also never wanna wash it again, because I want this to last forever. - I'm trying to make this
not sound like an ad, but honestly, it was so cool.

It was like I was walking around with a little magic trick all day. - I feel like if I were
to just see this online, I would never believe that it works, but it totally works. - This was just a really cool, like, temporary change that I
didn't have to commit to. And I think it's a really
good way for, like, people to just try something new.

(Slow upbeat music) (laughs) Not the same effect.
- Fine..

Watch what Whipped Cream Does in a Vacuum Chamber

Image source: http://sd.keepcalm-o-matic.co.uk/i/keep-calm-and-watch-me-whip.png

Hey guys, I'm Nate, welcome back to the workshop We love having comment requests from you guys for ideas of what we should do and we have a request here from Matthew DeRossett Matthew asks what happens if you put whipped cream or beaten egg whites in a vacuum chamber would they turn back into regular cream and egg whites respectively well Matthew we think that's an excellent question so today we're going to try out both of those things We'll take some heavy cream and turn that into whipped cream, then we'll take some egg whites and beat that until we have a meringue Then we'll see what happens if we pull as much air out as we can and see if they return to their regular un-whipped state. Let's start by whipping up some cream Most of the time when you're making whipped cream you do add sugar to it to make it taste a little sweeter, but because we want to see if our whipping cream returns to normal after being whipped, inflated, and deflated in a vacuum chamber, I'm not going to add any sugar to this one so we can see how close it is to the regular unchanged whipping cream There we have it, we have our whipped cream and a bowl and it has been filled with air to the point that it is no longer even a liquid. Now let's take some of this, scoop it off into our vacuum chamber, and see what happens when we depressurize whipped cream I'm not really sure how much of this to put in. I don't know how much it will expand, and I don't want to go so high that I have to turn off the vacuum pump Let's try starting with just a nice little glob not the whole bowl full, and see what happens when we depressurize it It's alive~ That's certainly growing quite a bit.

Oh boy, it still might be too much That was enough to fill the whole chamber all the way Several times Wow I thought the cake batter expanded a lot. It's got nothing on this That's gonna work so cool when we add food coloring Think that it just started to break before I. Opened the valve a little that last time There we go Well that looks kind of disgusting in there right now Doesn't look like whipped cream, and it doesn't look like un-whipped cream It's just sort of this mass of- it looks kind of like plastic sheets got melted onto the walls Guess I'll turn it off Open this up and let some pressure back in There we go, repressurized First impressions, I'm gonna say that has not turned back into regular whipping cream. I don't know what that is, but it's not regular whipping cream All right so when I have a larger amount, of it together on the spatula it is a little more liquid.

Definitely more liquid than whipped cream Tastes about the same Unsurprisingly Um- I feel like some of the milk fat may have started to change form, not so much that it started turning into butter, but something is different about it see what happens if I just scrape all of it as much as I can into sort of one spot Give it an opportunity to cool a little bit All right, we do have a liquid here. It looks like it's still maybe a little thicker than just normal cream. I'm wondering if there's still some air in it, and now that we've gathered it all in one spot, we can pull more out. So let's try turning the vacuum chamber back on and sucking any additional remaining air out of our little pool of cream.

Here goes. So it is expanding, so there's definitely still some air inside that blob in fact it's expanding quite a bit, so I guess there is a lot of air still inside that blob. It's tough to suck all of the air out of something Oh, it's gross well it's still bubbling and popping a lot, and I kind of want to just let it run until that bubbling and popping is mostly stopped, because I think that's when we'll have most of the air pulled out of our cream If it takes too long though, I'm just gonna turn it off All right, this is still bubbling- at about the same rate as it was like, three minutes ago. I think at this point we're just boiling the liquid inside the cream so let's just let the pressure out, and see how liquidy our cream has returned to being.

Stops bubbling as soon as I turn it off. I haven't even put any pressure back in but as soon as I turned off the vacuum it stopped bubbling Oh look at that, it's running Already running as a liquid. Y'know I think that looks pretty much just like cream. We may have done it, we may have just returned whipped cream to an un-whipped state It tastes like cream.

It looks like cream. Well that's really cool. But my favorite part of that is how much the whipped cream expanded, and we didn't really get to see Its full potential because this container is too small. So let's try using the larger jar, and maybe a tiny bit less whipped cream and see if we can still get a tiny bit of cream to fill the whole jar it looked like it was about to do that And that's awesome There we go, I've got a little cup full of our whipped cream.

Now let's add just a little bit of food coloring because I. Think this will be even cooler in color. Let's just add a couple of drops of red and gently mix it in Alright, three The larger chamber of course, does take longer to depressurize, so it's gonna go a little bit slower, but it's definitely growing Is it gonna break? Is it gonna break? Aughhhhhhh I have to add- Nope, nope. I didn't add any pressure back! That was it.

It's like hollow on the inside of this, it's just completely GONE That was great That was great~ look at this That was the most expansive thing we've ever put in a vacuum chamber, I'm pretty sure. I thought the cake batter was good, this well, it takes the cake Takes the cake from cake. That was beautiful. I'm touched.

Alright, let's add pressure back in and see what happens Didn't change a whole lot Yep, that's sort of creamy. It's a little bit liquid. I bet we could combine this together and pull out a little bit more air But we've already tried that. We know what happens.

Now I just want to see more whipped cream expanding. Let's try more colors Alright. Here goes- marbled yellow and blue whipped cream And.. Plop.

Falls to the bottom. That's great Delightful. There you have it, whipped cream in a vacuum chamber. When you pull out all the air, it actually does a pretty good job of returning to normal cream.

It seems like it's about the same consistency, it tastes the same, so I think that one kind of works Now let's try the same experiment using whipped egg whites, also known as meringue There we go, Egg whites from six eggs. I don't make meringue much, so I don't know how much it's gonna make. I feel like it's gonna be way more than I need. Guess we'll find out Alright, we're gonna call that good.

I think they might actually be able to beat even more till they're even more full of air and a little bit stiffer and shinier but I'm also pretty sure that egg whites can break if you beat it too much and since I am not a baking expert, I. Don't want it to break and have to start over. So right now it's pretty stiff, it's not very liquid We're gonna try this, I bet it'll work really well Now the egg whites did expand more than the whipping cream, so I'm kind of wondering if they're going to do the same thing in the vacuum chamber. I almost want to start with an even smaller amount of the meringue Yeah, let's just try about this much- see how it turns out.

Alright, here goes And it is growing And it's holding a shape. It kind of looks like a little ghost or something, like, "I'm a big ghost now~" I. Can see some bubbles on the surface starting to pop already Broken. Nowhere near the expansion of the whipped-cream So while it had a lot of air in it, I.

Wonder if it had so much that it meant all of the walls holding in the bubbles were extra thin It's far from done moving, but it didn't grow very much I think I'm gonna kill this I've killed the vacuum for the moment, and I want to try this same experiment in the smaller chamber, because it pulls the air out of that much faster. I think we'll have better luck getting our meringue to reduce back down to egg white in there Here goes, 3, 2, 1 Yeah, it just starts growing so much faster in this chamber. It just sort of tears itself apart. I.

Don't think it's expanding, it just has air trapped underneath it, and so it's just lifting the whole blob at once Okay let's try adding the pressure back That to me looks- I mean it's the same color as the egg white The whiter parts here floating around, I think they're that little tail that attaches the yolk to the egg white. We had some of that floating around in there I think it's just a little bit more liquid because we've beaten it half to death with a beater. It doesn't really have any of the connections holding it together that it did before. It's kind of return to an egg white state.

Not bad Well there you have it, whipped cream and whipped egg whites in a vacuum chamber We pull out all of the air, and they kind of return to their un-whipped state The egg whites have a very different texture, and I think that's because we broke up the bonds that were holding together the albumin with our egg beater But the whipped cream actually seemed to return to about how it started, which I thought was pretty cool Thank you Matthew DeRossett for your idea. Check your YouTube inbox, we're sending you 25 bucks. If you've got any ideas of things you want to see us try on the show, let us know down in the comments. If we use your idea, we'll send you $25 Thanks guys for joining us for this video and remember to come gear yourself up with products and merch at thekingofrandom.Com See you there.

New experiment. We get a box. It goes around my arm and the bowl, and we fill it with helium. It's airtight mold box Fill it with helium, and then we whip it so that it's full of helium and not air and we make a meringue that literally floats, and it floats- it's not going to work guys, don't- they won't I'm going to crack one egg and then I'm going to put a whole egg in the vacuum chamber, I'll pull a vacuum and we'll see if anything happens to either of them And now quite a few bubbles inside the egg mixture are expanding out.

Ooh~ delightful What's up guys, Grant here. I'm just working behind the scenes on some important stuff. Keep supporting Nate, he's the man and he's bringing back all the diy that you've been asking for.

Why Does Your Hair Turn GraySpeaking of Chemistry

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Theres no surer sign that youre getting
old than finding new gray hairs. But scientists have finally identified a gene involved in
the hair-graying process. What does this mean and how does your hair actually go from colored
to gray? Watch and weep. Geneticists recently examined the DNA of more
than 6,000 people and found specific genes that influence things like baldness, beard
thickness, hair curliness, and even unibrow...Ness.

But the find that got the most attention was
a particular variation in the IRF4 gene that affects when your hair goes gray. Finding
this specific graying variation in the gene could help scientists develop products to
slow the graying process. Or, speed it up, I suppose, if you want to be a silver fox or
avant garde hipster. But we all actually start out gray, in a way.
Before your hair pops out of your scalp, its completely white.

It gets its color from chemistryspecifically
a group of pigment molecules called melanin, which also determine your skintone and eye
color. For hair, theres eumelanin that creates dark shades and pheomelanin that produces
lighter hair colors. The proportion of these two types determines yourand everyone elseshair
color. How that color gets into your initially colorless
hair is up to your follicles.

Every hair follicle in your scalp contains cells called melanocytes,
which produce melanin. As hair grows in the follicle, melanocytes inject melanin pigments
into your hair cells that contain keratin, a protein thats also in your skin and fingernails.
So as your hair grows out of your head, it gets dyed with its natural hue. Over time,
our melanocytes produce less pigment, so our hair starts to lighten as we age. Scientists have recently found that as we
get older, our hair follicles start accumulating hydrogen peroxidethe same stuff people
use to bleach their hair.

Some hydrogen peroxide is normal. We actually make our own H2O2 as
melanocytes color our hair. Enzymes, especially catalase, break down hydrogen peroxide and
keep its concentration in check. But things get out of whack when older follicles cant
generate enough catalase.

Higher concentrations of hydrogen peroxide attack tyrosinase , an
important enzyme in melanin production. No melanin, no color in your hair. If you havent gone gray yet you probably
will around the same age as your parents did. But what about factors outside of age and
genetics? A recent study suggests that smoking can result in early onset graying.

And people
are always saying stress brings on the gray, right? Just look at how gray presidents get
while theyre in office. Some researchers say emotional stress could accelerate whats
called oxidative stress, the damage caused by reactive oxygen species like hydrogen peroxide.
But others contend there isnt solid scientific evidence backing this up yet. I guess you
could call all of these hypotheses a gray area. At any rate, its probably not worth stressing
about going gray, anyway.

Its completely natural and you can totally rock the look.
Share a pic of your favorite gray-haired celebrity or your own cool silver do in the comments.
The Speaking of Chemistry gang needs ideas. Special thanks to Jerry Weissmann, an emeritus
professor at the New York University School of Medicine for his help with this video.
Now hit that share button and dont forget to subscribe on your way out..