The gloves are on, which is kind of rare for me, but this product here contains so many warnings I Just felt it was prudent to wear gloves and set a good example to everyone now. I Don't know if these are California grade warnings or their actual real warnings, but it warns against harmful by inhalation and contact with skin irritating the skin risk of serious damaged eyes. It's nice they put this label right around here may cause sensitive sensitization by skin contact and this is basically it's a photochromic pigment. Um, so this was inspired by the recent discovery of these little ultraviolet cards.

and if you look at this little red box here, I'll Zoom down a little bit I shall Zoom down so you can actually see a little red box there. Little red box. uh shine uh light on it and immediately red text appears and this pigment here. this powder.

Well, here's the light. It instantly changes color when you put ultraviolet light in it. In this case, it's changing from white to red, but you can also get from white to blue, to green to yellow and just loads of different colors. It's quite interesting anyway.

I Thought it'd be quite interesting too, cast into some little silicone molds with two-part resin. and I Have to say one of the most disturbing things about this. To start off with: where's my little little wooden stick? There's my little wooden stick. It's just how powdery it is.

It's very, very powdery. I Have to say strong feelings for the people that who work at this place because they also sell pearlescent pigments and uh, this thing was covered in pearlescent pigment as are probably their houses. Now this is way too much. I've already experimented that this powder is so fine.

it's almost like flour and it doesn't take much to do the job, but it's extremely hard to deal with because it is an ultra fine powdered pigment. um, much more fine than the uh, the pigments that chain this glow-in-the-dark pigments. So here is two-part resin that I'm going to use for this and uh, this is generic pound Shop two part resin Alias Dollar Store the British Dollar store Poundland and what I'm going to do is I'm going to escort a portion into here now, put a decent amount in and then mix it up with this powder. The powder gets everywhere.

it's very, very fluffy. This is concerning, uh, but I suppose that suits the application that could be used in inks and things like that because they may want color changing inks I'd guess it's also used as a colorington plastic and one good way to actually test this if this is going to have the desired effect is to mix it into the resin and look at all this wasted stuff down here. I feel like I want to pick it up and kind of like get it into the mix as well because otherwise it's just going to get wasted and to be honest, I'd rather it result bound into resin, especially with all those warnings. So let's test this by simply pointing a light tip and as you can see, it's all changed color quite vividly.

That is most excellent. So here is the what I'm going to put it into and I shall just Breeze up a bit towards the camera for this just so you can get a better View and I shall put some into this big huge flowery type thing this mold and then I shall chap it down to try and get rid of the air bubbles. It doesn't really matter too much, it's quite a finely detailed thing. The bubbles don't really show in these flower molds too much, and then I may actually make up some more resin and fill the other ones up as well so we can make lots of little flowers and see how this works.

I may actually embed an UltraViolet led into as well to see what happens, right? This is looking very promising. This is looking very promising indeed. I'm gonna make that I'm just gonna put it all in the big one, then mix some more and put another one in the meantime. Uh, since this is going to take a while to cure, I shall pause momentarily and I'll be back in a moment one moment, please.

The resin has cured. I've also molded a few others in glow-in-the-dark resin and just plain resin which interestingly fluoresce is under ultraviolet light. I also did mold some ultraviolet LEDs into some of these. Let me show you, if I turn it on, it goes right in the middle, but it doesn't really spread out.

Beyond that, it's almost like when the pigment changes color, it blocks the ultraviolet. However, I did find a way around that. Let me demonstrate I got one of my 3D printed candle Flames the file is on as a short on the internet and I coated in the resin and when you turn the LED on inside it, it does actually cause the whole thing to progressively change the dark color. I Shall put that to the side because the bit we really want to see is these items here.

So I have my big leak Tracer ultraviolet wand as used by mechanics to trace basically coolant leaks looking for the fluorescent color in them and refrigerant leaks. and if I move that out the way so it doesn't skew its little thing, you can see. it's doing a good job of changing color. but now if I pass over these, you can see the ones that have the pigment because when I pass over, they change vividly to the red color.

That's pretty good. That is very impressive and I'll just run over this as well and make its little thing change. That's a really interesting result. And if I turn the light off now, well, let's give it another boost with this and I'll turn the light off and take the exposure off and you'll see the glow-in-the-dark ones because they're quite obviously fluorescent.

Watch your eyes, it's about to get bright again. So um, this card I did augment it I quoted the back of it. so instead of just being the front, that uh says UV and it goes dark. Now when you hold it over the back, the whole thing goes dark.

It changes color completely. It's interesting stuff. So this pigment came from a UK seller I shall put a link down below. Uh, it's a fairly specialist seller.

um on eBay in the UK called Perfect Powers and Pigments I'd Guess there are other sellers selling this in America unless of course California has had its way. In which case, no, you won't be getting anything because it might be dangerous. but um, interesting stuff. You can see how this has gone completely red and I might even be tempted to get some of the other colors.

although I will say again, it's a very, very fine powder. Lots of so scary warnings and when I opened this up, there was just no way of opening it without the slight dust coming out. So wear suitable skin protection just in case. I Do know that the light sensor materials can cause skin sensitization as happens with the resins used in 3D printing, but that is it.

It was an interesting experiment. It was quite a fun thing to do. Um, and it's very very Vivid And really Vivid Giving them how to put in it didn't take much pigment to actually have that strong colorful effect. So you could technically speaking, you could make ornaments or even do a painting with colors that would appear white.

uh, until you took it outside into sunlight and then it would suddenly change into those Vivid colors. Quite a fascinating material. Very interesting indeed.