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I Painted My Entire Room With Musou Black-The World's Blackest Paint

In this video I paint my entire room with Musou Black to see what it looks like when the walls around you absorb over 99% of the light in the room. What happens when you turn on a light in the room?
Musou Black:
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*Any experiment you try is at YOUR OWN RISK. The Action Lab assumes no responsibility for any injury if you attempt anything you see in this video or on The Action Lab channel.


  1. The Action Lab

    The Action Lab

    13 kun oldin

    I only ran into the wall once! Extra points for anyone who can spot the cell phone flashlight I accidently left on in my pocket...

    • Arctic Fire

      Arctic Fire

      3 soat oldin

      I was at the part when I read it lol



      10 soat oldin

      Oh yeah and hiding seek



      10 soat oldin

      How about this you paint everything except your head and go in the room

    • Daya McCarthy

      Daya McCarthy

      Kun oldin

      Your intro was perfect 😂😂

    • Ahmed Aljbury

      Ahmed Aljbury

      Kun oldin

      The funny thing that while i was reading the comment the clip where the flash light was turned on in it in his pocket showed up so it was perfect timing 😂

  2. TheRealK_ man

    TheRealK_ man

    35 daqiqa oldin

    You already know he locking up prisoonser in that room lmao

  3. Highlight


    40 daqiqa oldin

    you walk in, close the door and immediately hear your thoughts

  4. Thap Thop Theep

    Thap Thop Theep

    56 daqiqa oldin

    What colour did you say it was again?

  5. Thap Thop Theep

    Thap Thop Theep

    59 daqiqa oldin

    What's that paint called again?

  6. sten beetlex

    sten beetlex

    Soat oldin

    Would look nice as aquarium background. The black would make the colours of fish pop out. Black backdrop with sandy bottom

  7. [LeafDuski]•


    Soat oldin

    Just wait until someone animates bad apple with this

  8. Dylan Mijer

    Dylan Mijer

    Soat oldin

    I would sleep in ther😍❤️😍❤️

  9. SDA developer

    SDA developer

    Soat oldin

    Use night vision camera

  10. Master Cricket

    Master Cricket

    2 soat oldin

    How many lumens is that bulb?

  11. Irene S

    Irene S

    2 soat oldin

    Very cool. This proves that a "black hole" is a large mass and not an actual hole.

  12. Nicole Arguelles

    Nicole Arguelles

    2 soat oldin

    Would have been cool if you brought a model of the moon, and talked about the phases we see form earth! Even though I've accepted this fact since I was a kid, it's like something clicked when I saw your spinning around under the light

  13. Resilient 1996

    Resilient 1996

    2 soat oldin

    Reminds me of biblical hell, just add fire and sulfur and worms and the scream of billions of people and infinite time... Better repent and seek the Lord.

  14. OrcLurtz


    2 soat oldin

    Soo the Camera is not capturing the black paint and what we are seeing is the camera black not the real black you painted. Get me?

  15. David Lillecrapp

    David Lillecrapp

    2 soat oldin




    3 soat oldin

    You have nerves of steel to be standing in that dark room alone with just a camera😳

  17. A


    3 soat oldin

    Curious to see the world's brightest light inside that room

  18. Szabó Csaba

    Szabó Csaba

    3 soat oldin

    Imagine a musou black car moving on the streets at night time.

  19. Night Fox

    Night Fox

    3 soat oldin

    I want a musou black shirt...

  20. VanDeBoom 15

    VanDeBoom 15

    4 soat oldin

    "it's like black ink" me: uh... it IS black ink.

  21. SquattingDog


    4 soat oldin

    Yeah now paint the room as the terestial night sky

  22. YO TENGO


    4 soat oldin

    is this what racism looks like

  23. Tanishq Patil • 70 years ago

    Tanishq Patil • 70 years ago

    4 soat oldin

    "Well this is next level green screen but the only exception is it is black"

  24. I am Jhon.b

    I am Jhon.b

    4 soat oldin

    You should do the brightest room😎

  25. R.B. Aldridge

    R.B. Aldridge

    5 soat oldin

    Before God said let there be light

  26. Sam Lemieux

    Sam Lemieux

    5 soat oldin

    The dislikes were people who thought the room was a mansion and thought he was showing off

  27. Bloodmoon Angel

    Bloodmoon Angel

    6 soat oldin

    Blacker than the blackest black times infinity

  28. ChronoSquare


    6 soat oldin

    I have no idea if your read comments, but: What was it like trying to see inside the room without a light on? Did your eyes "see" anything differently, than how we otherwise seem to have random faint color-noise interspersed throughout the "black"? (like when you close your eyes at night to sleep but you're not actually "seeing" blackness... idk if this is actually a thing, if it has a name, is it just me, etc)

  29. Acey


    6 soat oldin

    I've never been more surprised at the chillness of the comments jokes

  30. hugo bregou

    hugo bregou

    7 soat oldin

    He looks like he's just used a green screen and incrusted himself on a black background.

  31. The.rmfl. Industry

    The.rmfl. Industry

    7 soat oldin

    So are you fr he has A BIGGER BLACK HOLE

  32. Girish Nair

    Girish Nair

    7 soat oldin

    Wish u had the world's brightest flashlight

  33. WretchedKnight


    7 soat oldin

    3:35 for those who wanna go right into the meat of the video I gotcha

  34. DeliveryManBoy


    7 soat oldin

    I wasted a bunch of expensive paint on some cheap insulation. Should be the title of this video

  35. growfin


    8 soat oldin

    5:06 It was at this point I wanted to see the actual light bulb on in he black room. But it never happened.

  36. Akamibo Baby

    Akamibo Baby

    8 soat oldin

    Me in the hood

  37. TraceReaper


    9 soat oldin

    Smoke dmt in there

  38. Edisa Kuroki

    Edisa Kuroki

    9 soat oldin

    It looks like he's floating

  39. TheDolphinNator


    9 soat oldin

    New type of green screen

  40. Marsh Walker

    Marsh Walker

    9 soat oldin

    3:44 look edited😂

  41. Angel GCP

    Angel GCP

    9 soat oldin

    Men are so feminine now 😒 she said you arent painting in the room and that ended that idea 🙄

  42. Maril Wade

    Maril Wade

    10 soat oldin

    Honestly, that would be so awesome to film stuff in. Like interrogation scenes in movies, Or magic tricks!

  43. Phil


    10 soat oldin

    Ending with a faint sound of boss music ?

  44. RitchiesRule


    10 soat oldin

    Now it's the 4 kings

  45. Daniel Covington

    Daniel Covington

    10 soat oldin

    3:38 has *immense* meme potential

  46. Blue Marbel

    Blue Marbel

    10 soat oldin

    Paint a starry sky using fluorescent paint using different colors so it would look like a planetarium.

  47. Tuqa Bader

    Tuqa Bader

    11 soat oldin

    It looks like green screen 😂

  48. Christian Brother

    Christian Brother

    11 soat oldin

    But somehow the astronauts were illuminated in the back and front with 1 light source, only a fooled person still thinks we walked on the moon

  49. •Piggy Princess•

    •Piggy Princess•

    11 soat oldin

    Oh gosh-

  50. Samantha


    11 soat oldin

    Paint an anechoic chamber this color and see how long someone can stay in it.

  51. blockshift 758

    blockshift 758

    12 soat oldin

    looks like an action movie

  52. Cool Cat

    Cool Cat

    12 soat oldin

    It ALMOST looks like really good quality green screen at 6:38

  53. Robigan 06

    Robigan 06

    12 soat oldin

    Every great youtuber scientist/experimentists (Yes I made a word but it should make sense and sounds cooler) has a wife to keep then in check

  54. Frankie Cuellar

    Frankie Cuellar

    12 soat oldin

    Why it's gonna be black!?? Lol jk

  55. henrique sena

    henrique sena

    12 soat oldin

    Feels like you deleted the background with a green screen

  56. Camibb_3


    12 soat oldin

    When u Make a black concrete Minecraft room:

  57. Serge Mi

    Serge Mi

    13 soat oldin

    just incase y'all forgot, its the blackest room

  58. wolvix '

    wolvix '

    13 soat oldin

    Next make a maze like that

  59. Monaca Towa

    Monaca Towa

    14 soat oldin

    5:18 when you forgot to save last time you play animal crossing new leaf

  60. Danny Benhur

    Danny Benhur

    14 soat oldin

    He is floating in mid space... Lop

  61. Mustafa Naik

    Mustafa Naik

    14 soat oldin

    Now watching this on an oled display is trippy

  62. James Hoots

    James Hoots

    15 soat oldin

    Hello darkness my old friend

  63. jive fool

    jive fool

    15 soat oldin

    I don't get the point... If you own the home, you just lowered the resale value and will stick the new owners with a total PITA. If you rent, kiss your security deposit goodbye. Either way, you wasted money to lose money on stupid... Although, I'm sure that it's BLM approved...

  64. Baba Loo

    Baba Loo

    15 soat oldin

    I wanna paint my boat with that

  65. Andre


    16 soat oldin

    Yes, UZtop. I do, in fact, want to see a guy paint a room black and turn a light on in there.

  66. Liberty309


    16 soat oldin

    I see my future theater room painted with this.

  67. Angry-porta- charger

    Angry-porta- charger

    16 soat oldin

    When he turned on the light bulb i got fnaf checklist vibes

  68. Jared Hogfoss

    Jared Hogfoss

    16 soat oldin

    wonder if you were to take pictures of something with light on it how the pictures could come out.. then i also wonder if its possible to do photogrammetry with that room

  69. Dog


    17 soat oldin

    Could you imagine if that’s his room...

  70. Galaxy - 01

    Galaxy - 01

    17 soat oldin

    Imagine if robbers will paint self would be funny to see it how cops try find guy in the dark :D

  71. Joshua Paul Porter

    Joshua Paul Porter

    17 soat oldin

    lololol best first 11 second intro

  72. Jazmin Lopez

    Jazmin Lopez

    17 soat oldin

    I want to see someone fully covered in this so that when they stand in this room you can’t see them until they open their eyes

  73. ScopeKing1994


    17 soat oldin

    Just knew these vids would happen

  74. W 26

    W 26

    18 soat oldin

    Fake, its a greenscreen

  75. The Apple Guru, Nolan Beichner

    The Apple Guru, Nolan Beichner

    18 soat oldin

    2:56 what you came to see. Thank me later

  76. EricBHL


    18 soat oldin

    Green screen duh

  77. Avee


    18 soat oldin

    The opposite of the apple commercial room

  78. Jon-John Pinckney

    Jon-John Pinckney

    18 soat oldin

    5:17 - "Is this the reeeeal life!, is this just fantasy..."

  79. Oompity Loomps

    Oompity Loomps

    18 soat oldin

    This room has the nigga word pass

  80. lilly imaginator

    lilly imaginator

    18 soat oldin

    I wonder how does it look like in a naked eye. In videos many things can look black even if in reality you can see them clearly. I wish i could really see how black it is

  81. Elliott Pimp daddy

    Elliott Pimp daddy

    19 soat oldin

    You should color your self in that black

  82. Mark Rosenwald

    Mark Rosenwald

    19 soat oldin

    I love how his wife shut down painting an actual room right way

    • Noah Beller

      Noah Beller

      11 soat oldin

      Have you ever tried covering up even moderately dark colors of paint?? He would need like a dozen coats of primer to bring it back to white XD

  83. Víctor Rodríguez

    Víctor Rodríguez

    19 soat oldin


  84. Vortex


    19 soat oldin

    Does that mean that that is the perfect green screen

  85. Kevin Luo

    Kevin Luo

    19 soat oldin

    This made me realize how dirty my screen is.

  86. Chris Holman

    Chris Holman

    20 soat oldin

    "I'll be painting our room with the blackest paint" Wife: "You ain't painting our room black" Next scene: "I built a room to paint black" 🤣😂🤣😂🤣😂 We know who's the boss! 🤣😂🤣😂

  87. Elisabeth S.

    Elisabeth S.

    20 soat oldin

    News flash - you do not have to see the other person to have a conversation.

  88. Hommie Dorito

    Hommie Dorito

    20 soat oldin

    Id just walk in and out all day and say Rise and shine doctor Freeman

  89. Quinn Dickens

    Quinn Dickens

    20 soat oldin

    How about worlds brightest flashlight vs the room

  90. Hentai Daisuke UwU

    Hentai Daisuke UwU

    20 soat oldin

    I actually wanted to do this on my room😳😳 it looks so cool Add some neon light and it'll feels like you are in space.

  91. Coffee Cats Kimchi

    Coffee Cats Kimchi

    20 soat oldin

    They should use rooms like this to teach kids about space and light!

  92. Sajjad A

    Sajjad A

    20 soat oldin

    14 year old libtard girls on tik tok: “Is he seriously exploiting black people for views?? ✨cancelled✨”

    • Ayush Sharma

      Ayush Sharma

      16 soat oldin

      Lmao so true

  93. Cray ven

    Cray ven

    21 soat oldin

    That's really cool. Like lighting characters in a game engine xD

  94. Jacob Castro

    Jacob Castro

    21 soat oldin

    Where's the 100,000 lumen flashlight?

  95. Kelley King

    Kelley King

    21 soat oldin

    0:20 poor me showing off my house

  96. SkidMcmarxx


    21 soat oldin

    Dude. You talk. So. Weird.

  97. Nefernefertuaten Nefertiti

    Nefernefertuaten Nefertiti

    21 soat oldin

    Can you give me one plss am begging to have that thing huhu

  98. Jacob Castro

    Jacob Castro

    21 soat oldin

    Wonder if you could use this in tattoo ink?

  99. Jason Silva

    Jason Silva

    21 soat oldin

    Portal? More like the way out of reality itself...

  100. rufftuffman rufftuffman

    rufftuffman rufftuffman

    21 soat oldin

    wow its like when you go to bed