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How To Make INVISIBLE Ink (Secret Messages)


hey guys welcome back thanks for joining

hey guys welcome back thanks for joining me today on the king of random when I

me today on the king of random when I

me today on the king of random when I was a kid I often dreamed of being a spy

was a kid I often dreamed of being a spy

was a kid I often dreamed of being a spy like James Bond or Jason Bourne and an

like James Bond or Jason Bourne and an

like James Bond or Jason Bourne and an old-fashioned staple of the spy is being

old-fashioned staple of the spy is being

old-fashioned staple of the spy is being able to write secret messages from one

able to write secret messages from one

able to write secret messages from one person to another there are a lot of

person to another there are a lot of

person to another there are a lot of different ways you can try and write

different ways you can try and write

different ways you can try and write secret messages and the purpose of

secret messages and the purpose of

secret messages and the purpose of today’s video is to try out three

today’s video is to try out three

today’s video is to try out three different types of invisible ink to see

different types of invisible ink to see

different types of invisible ink to see which one’s work the best the first type

which one’s work the best the first type

which one’s work the best the first type of invisible ink will try is lemon juice

of invisible ink will try is lemon juice

of invisible ink will try is lemon juice which is invisible until you hold it

which is invisible until you hold it

which is invisible until you hold it over a heat source the second is a

over a heat source the second is a

over a heat source the second is a mixture of baking soda and water which

mixture of baking soda and water which

mixture of baking soda and water which is supposed to be revealed when you

is supposed to be revealed when you

is supposed to be revealed when you cover it in grape juice the third

cover it in grape juice the third

cover it in grape juice the third experiment is to try and use bleach as

experiment is to try and use bleach as

experiment is to try and use bleach as an ink and see if it will show up under

an ink and see if it will show up under

an ink and see if it will show up under black light let’s get started for a

black light let’s get started for a

black light let’s get started for a first invisible ink test we’ve got a

first invisible ink test we’ve got a

first invisible ink test we’ve got a couple of lemons you could also buy the

couple of lemons you could also buy the

couple of lemons you could also buy the pre squeezed lemon juice in bottles at

pre squeezed lemon juice in bottles at

pre squeezed lemon juice in bottles at the store that should work just as well

the store that should work just as well

the store that should work just as well let’s cut our lemon in half and squeeze

let’s cut our lemon in half and squeeze

let’s cut our lemon in half and squeeze the juice out onto this plate I think

the juice out onto this plate I think

the juice out onto this plate I think that looks like enough juice to be used

that looks like enough juice to be used

that looks like enough juice to be used for a lot of ink now let’s take a piece

for a lot of ink now let’s take a piece

for a lot of ink now let’s take a piece of a bamboo skewer or a toothpick dip it

of a bamboo skewer or a toothpick dip it

of a bamboo skewer or a toothpick dip it in the juice and try writing on our

in the juice and try writing on our

in the juice and try writing on our paper get the bamboo skewer in the lemon

paper get the bamboo skewer in the lemon

paper get the bamboo skewer in the lemon juice so it has a little bit of a

juice so it has a little bit of a

juice so it has a little bit of a coating on it and then use that as a

coating on it and then use that as a

coating on it and then use that as a stylus to write on a piece of paper

let your lemon juice ink dry completely

let your lemon juice ink dry completely onto the paper the lemon juice invisible

onto the paper the lemon juice invisible

onto the paper the lemon juice invisible ink is supposed to be activated by heat

ink is supposed to be activated by heat

ink is supposed to be activated by heat you can use an incandescent light bulb a

you can use an incandescent light bulb a

you can use an incandescent light bulb a lighter or a stove to try and give some

lighter or a stove to try and give some

lighter or a stove to try and give some heat to your paper and bring out the

heat to your paper and bring out the

heat to your paper and bring out the secret message first I’m going to try

secret message first I’m going to try

secret message first I’m going to try this with the lighter of course you need

this with the lighter of course you need

this with the lighter of course you need to be very careful that you don’t light

to be very careful that you don’t light

to be very careful that you don’t light your piece of paper on fire

your piece of paper on fire

your piece of paper on fire [Music]

[Music]

[Music] with the heat moving evenly to reduce

with the heat moving evenly to reduce

with the heat moving evenly to reduce your risk of flames

your risk of flames

your risk of flames [Music]

[Music]

[Music] Oh

there we go you can clearly see the

there we go you can clearly see the secret message the flame did do a little

secret message the flame did do a little

secret message the flame did do a little bit of scorching on the paper in a

bit of scorching on the paper in a

bit of scorching on the paper in a couple of spots so as I said you have to

couple of spots so as I said you have to

couple of spots so as I said you have to be very careful or you could easily burn

be very careful or you could easily burn

be very careful or you could easily burn your secret message that worked pretty

your secret message that worked pretty

your secret message that worked pretty well I’m going to try a slight variation

well I’m going to try a slight variation

well I’m going to try a slight variation I have here an old-fashioned fountain

I have here an old-fashioned fountain

I have here an old-fashioned fountain pen and I’m going to try using the lemon

pen and I’m going to try using the lemon

pen and I’m going to try using the lemon juice as ink to write with this instead

juice as ink to write with this instead

juice as ink to write with this instead [Music]

[Music]

[Music] write our secret message this time

write our secret message this time

write our secret message this time instead of using the lighter because it

instead of using the lighter because it

instead of using the lighter because it has such a high risk of lighting the

has such a high risk of lighting the

has such a high risk of lighting the paper on fire I’m going to be using a

paper on fire I’m going to be using a

paper on fire I’m going to be using a glass top stove using a glass top stove

glass top stove using a glass top stove

glass top stove using a glass top stove gives us a nice even surface to heat our

gives us a nice even surface to heat our

gives us a nice even surface to heat our paper over

that was supposed to be the letter U and

that was supposed to be the letter U and apparently I didn’t have quite enough

apparently I didn’t have quite enough

apparently I didn’t have quite enough lemon juice on my pen our second method

lemon juice on my pen our second method

lemon juice on my pen our second method involves a mixture of baking soda and

involves a mixture of baking soda and

involves a mixture of baking soda and water as the ink and grape juice to

water as the ink and grape juice to

water as the ink and grape juice to reveal it

[Music]

[Music] I’ve mixed up about one part water and

I’ve mixed up about one part water and

I’ve mixed up about one part water and one part baking soda here not all of the

one part baking soda here not all of the

one part baking soda here not all of the baking soda will dissolve but hopefully

baking soda will dissolve but hopefully

baking soda will dissolve but hopefully it will work just fine for our invisible

it will work just fine for our invisible

it will work just fine for our invisible ink

ink

ink I’ll try using my fancy pen again to see

I’ll try using my fancy pen again to see

I’ll try using my fancy pen again to see if this works let’s use a little bit of

if this works let’s use a little bit of

if this works let’s use a little bit of paper towel to blot off the excess water

paper towel to blot off the excess water

paper towel to blot off the excess water I’ve got two different methods I want to

I’ve got two different methods I want to

I’ve got two different methods I want to try to apply the grape juice first I’m

try to apply the grape juice first I’m

try to apply the grape juice first I’m going to use a little bit on a paper

going to use a little bit on a paper

going to use a little bit on a paper towel and rub it over the lettering next

towel and rub it over the lettering next

towel and rub it over the lettering next I’m going to put some grape juice in

I’m going to put some grape juice in

I’m going to put some grape juice in this small spray bottle and spray it

this small spray bottle and spray it

this small spray bottle and spray it over what I’ve written the lettering is

over what I’ve written the lettering is

over what I’ve written the lettering is a little bit visible but it’s not

a little bit visible but it’s not

a little bit visible but it’s not standing out a ton not that good as a

standing out a ton not that good as a

standing out a ton not that good as a juice let’s see if it’s good at a secret

juice let’s see if it’s good at a secret

juice let’s see if it’s good at a secret message revealer well then actually kind

message revealer well then actually kind

message revealer well then actually kind of work sprayed it on and then maybe

of work sprayed it on and then maybe

of work sprayed it on and then maybe straight on a little bit too much but

straight on a little bit too much but

straight on a little bit too much but amazing I wasn’t too bad it brought out

amazing I wasn’t too bad it brought out

amazing I wasn’t too bad it brought out the color it’s sort of a darker grey

the color it’s sort of a darker grey

the color it’s sort of a darker grey maybe even a hint of blue in it maybe

maybe even a hint of blue in it maybe

maybe even a hint of blue in it maybe that’s just from the juice that works

that’s just from the juice that works

that’s just from the juice that works okay I don’t think it revealed as well

okay I don’t think it revealed as well

okay I don’t think it revealed as well as the lemon juice does but it’s kind of

as the lemon juice does but it’s kind of

as the lemon juice does but it’s kind of fun to be able to use a second chemical

fun to be able to use a second chemical

fun to be able to use a second chemical to make the first one appear as an

to make the first one appear as an

to make the first one appear as an experiment I’m also going to see what

experiment I’m also going to see what

experiment I’m also going to see what happens if we use our baking soda water

happens if we use our baking soda water

happens if we use our baking soda water mixture as ink and then hold it over the

mixture as ink and then hold it over the

mixture as ink and then hold it over the heat the way we did with the lemon juice

heat the way we did with the lemon juice

heat the way we did with the lemon juice [Music]

leave a message try to get here

leave a message try to get here [Music]

[Music]

[Music] oh what a good see your message actually

oh what a good see your message actually

oh what a good see your message actually that turned out really well that shows

that turned out really well that shows

that turned out really well that shows up very nicely I think that’s actually

up very nicely I think that’s actually

up very nicely I think that’s actually even darker than the lemon juice let’s

even darker than the lemon juice let’s

even darker than the lemon juice let’s see what happens if we also put the heat

see what happens if we also put the heat

see what happens if we also put the heat over the one that had grape juice on it

over the one that had grape juice on it

over the one that had grape juice on it [Music]

[Music]

[Music] that’s cool I don’t know how well it

that’s cool I don’t know how well it

that’s cool I don’t know how well it showed on my camera but all of the grape

showed on my camera but all of the grape

showed on my camera but all of the grape juice just turned like a lot more purple

juice just turned like a lot more purple

juice just turned like a lot more purple and it started burning the paper so that

and it started burning the paper so that

and it started burning the paper so that wasn’t this is for our third type of

wasn’t this is for our third type of

wasn’t this is for our third type of invisible ink we’re going to be using

invisible ink we’re going to be using

invisible ink we’re going to be using bleach and an ultraviolet flashlight

bleach and an ultraviolet flashlight

bleach and an ultraviolet flashlight ultraviolet is a frequency of light that

ultraviolet is a frequency of light that

ultraviolet is a frequency of light that we can’t pick up very well with our eyes

we can’t pick up very well with our eyes

we can’t pick up very well with our eyes but there are a lot of substances that

but there are a lot of substances that

but there are a lot of substances that will reflect it back in frequency we can

will reflect it back in frequency we can

will reflect it back in frequency we can see ultraviolet lights are also known as

see ultraviolet lights are also known as

see ultraviolet lights are also known as black lights so it’s carefully pour out

black lights so it’s carefully pour out

black lights so it’s carefully pour out a small amount of our bleach and try

a small amount of our bleach and try

a small amount of our bleach and try riding with it to see what happens first

riding with it to see what happens first

riding with it to see what happens first let’s see if the bleach itself seems to

let’s see if the bleach itself seems to

let’s see if the bleach itself seems to light up in the black light doesn’t seem

light up in the black light doesn’t seem

light up in the black light doesn’t seem to be doing much so I don’t know how

to be doing much so I don’t know how

to be doing much so I don’t know how well this is going to work looks pretty

well this is going to work looks pretty

well this is going to work looks pretty much the same with the black light on it

much the same with the black light on it

much the same with the black light on it well even though it’s not lighting up

well even though it’s not lighting up

well even though it’s not lighting up very much on the plate let’s try it with

very much on the plate let’s try it with

very much on the plate let’s try it with our pen and paper okay now in theory the

our pen and paper okay now in theory the

our pen and paper okay now in theory the bleach is supposed to be reflective and

bleach is supposed to be reflective and

bleach is supposed to be reflective and sort of glow under the blacklight let’s

sort of glow under the blacklight let’s

sort of glow under the blacklight let’s see how this works oh oh it’s the

see how this works oh oh it’s the

see how this works oh oh it’s the opposite of reflective where I’ve drawn

opposite of reflective where I’ve drawn

opposite of reflective where I’ve drawn with the bleach the paper itself

with the bleach the paper itself

with the bleach the paper itself reflects the light pretty well where

reflects the light pretty well where

reflects the light pretty well where I’ve drawn the bleach it completely

I’ve drawn the bleach it completely

I’ve drawn the bleach it completely stops reflecting it’s like it’s black

stops reflecting it’s like it’s black

stops reflecting it’s like it’s black ink in the middle of the glowing white

ink in the middle of the glowing white

ink in the middle of the glowing white paper that’s cool weird I would not have

paper that’s cool weird I would not have

paper that’s cool weird I would not have guessed that was gonna happen I thought

guessed that was gonna happen I thought

guessed that was gonna happen I thought it was gonna glow so that’s interesting

it was gonna glow so that’s interesting

it was gonna glow so that’s interesting the bleach seems to sort of stop the

the bleach seems to sort of stop the

the bleach seems to sort of stop the ultraviolet light from bouncing off of

ultraviolet light from bouncing off of

ultraviolet light from bouncing off of the paper

the paper

the paper [Music]

[Music]

[Music] with this type of miserable ink you can

with this type of miserable ink you can

with this type of miserable ink you can draw whatever you want and one of the

draw whatever you want and one of the

draw whatever you want and one of the benefits of it is that it’s not

benefits of it is that it’s not

benefits of it is that it’s not permanently visible it only shows up

permanently visible it only shows up

permanently visible it only shows up when someone uses the blacklight on it

when someone uses the blacklight on it

when someone uses the blacklight on it the lemon juice and the baking soda are

the lemon juice and the baking soda are

the lemon juice and the baking soda are both wonderful for sending concealed

both wonderful for sending concealed

both wonderful for sending concealed messages but once they’re revealed its

messages but once they’re revealed its

messages but once they’re revealed its permanently on the paper if you use the

permanently on the paper if you use the

permanently on the paper if you use the blacklight in the bleach it’s only there

blacklight in the bleach it’s only there

blacklight in the bleach it’s only there when you’ve got the light on it

something I like about using the bleach

something I like about using the bleach is that if you have a light of your own

is that if you have a light of your own

is that if you have a light of your own you can see what you’re putting on the

you can see what you’re putting on the

you can see what you’re putting on the paper as you write it there you have it

paper as you write it there you have it

paper as you write it there you have it three different methods of using

three different methods of using

three different methods of using invisible ink lemon juice which shows up

invisible ink lemon juice which shows up

invisible ink lemon juice which shows up under heat baking soda and water which

under heat baking soda and water which

under heat baking soda and water which shows up a little bit with grape juice

shows up a little bit with grape juice

shows up a little bit with grape juice or also shows up with heat on it and

or also shows up with heat on it and

or also shows up with heat on it and bleach which I thought was gonna glow

bleach which I thought was gonna glow

bleach which I thought was gonna glow under a blacklight but actually has the

under a blacklight but actually has the

under a blacklight but actually has the opposite effect the paper around it

opposite effect the paper around it

opposite effect the paper around it glows and it stays nice and dark I think

glows and it stays nice and dark I think

glows and it stays nice and dark I think my favorite of these is using the bleach

my favorite of these is using the bleach

my favorite of these is using the bleach because you can actually turn on your

because you can actually turn on your

because you can actually turn on your own blacklight and draw with it while

own blacklight and draw with it while

own blacklight and draw with it while you’re looking at what you see with the

you’re looking at what you see with the

you’re looking at what you see with the lemon juice or the baking soda ink it’s

lemon juice or the baking soda ink it’s

lemon juice or the baking soda ink it’s pretty hard to see what’s going down on

pretty hard to see what’s going down on

pretty hard to see what’s going down on the paper because you can’t heat it up

the paper because you can’t heat it up

the paper because you can’t heat it up and reveal it or it’s no longer a secret

and reveal it or it’s no longer a secret

and reveal it or it’s no longer a secret now you’re all one step closer to

now you’re all one step closer to

now you’re all one step closer to becoming spies this is a great activity

becoming spies this is a great activity

becoming spies this is a great activity for you to try at home and it can be a

for you to try at home and it can be a

for you to try at home and it can be a fun way to send secret messages to your

fun way to send secret messages to your

fun way to send secret messages to your friends thank you for joining us for

friends thank you for joining us for

friends thank you for joining us for this experiment today and we look

this experiment today and we look

this experiment today and we look forward to the next one talk to you then

forward to the next one talk to you then

forward to the next one talk to you then I don’t think it’s gonna catch on as a

I don’t think it’s gonna catch on as a

I don’t think it’s gonna catch on as a breath spray hey guys thanks for

breath spray hey guys thanks for

breath spray hey guys thanks for supporting Nate so much in these videos

supporting Nate so much in these videos

supporting Nate so much in these videos I know this used to be grant Thompson

I know this used to be grant Thompson

I know this used to be grant Thompson the king of random but for years there

the king of random but for years there

the king of random but for years there have been so many things that I wanted

have been so many things that I wanted

have been so many things that I wanted to do for you that I just couldn’t do by

to do for you that I just couldn’t do by

to do for you that I just couldn’t do by myself

myself

myself but now that Nate’s here helping out

but now that Nate’s here helping out

but now that Nate’s here helping out I’ve got some room to breathe again

I’ve got some room to breathe again

I’ve got some room to breathe again which means a lot of fun new things

which means a lot of fun new things

which means a lot of fun new things coming your way

”

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