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    Home » Holiday Science » Halloween Science » How to make fake blood

    How to make fake blood

    October 30, 2018 By Emma Vanstone 17 Comments

    If you need a last minute creepy addition to your Halloween costume, we’ve got just the thing, fake blood! It looks great and you probably have everything you need for our fake blood recipe already in the kitchen so don’t even need to go shopping.

    This activity is also found in Gross Science!

    Image of fake blood in a test tube - easy fake blood recipe

    Fake Blood Recipe

    We made two types of fake blood. The first shows and demonstrates how blood actually works as it clots.

    The second is just pretty cool and more effective looking!

    Both contain food colouring and stain clothes, so make sure you aren’t wearing anything you’re not happy to stain red!

    Fake Blood Recipe 1

    Blood Type (pun intended) 1

    Gelatin powder

    Water

    Saucepan

    Red food colouring

    Glass

    Grease proof paper

    How to make fake blood with gelatin

    1. Heat about 120ml of water until it is boiling.

    2. Add 1 teaspoon of gelatin powder

    3. Keep stirring until it dissolves – it does tend to stick to the pan.

    4. Take off the heat and leave to cool for 15 mins

    5. Add a few drop of red food dye until you get the colouring you would like.

    6. The fake blood will thicken slowly showing how blood coagulates and sticks together.

    7. You can use it once you have got it to its desired consistency with vampire fangs and pretend cuts.

    8. If you take some of the sticky blood out and smear it on grease proof paper, it will set hard like a scab does!

    Blood and guts Science Sparks

    Fake Blood Recipe 2

    Blood Type 2

    This is a sticker, tastier and gooier blood, but not as clever. It just looks good

    Golden syrup

    Flour

    Red blue dye

    Blue food dye

    How to make fake blood with golden syrup or corn syrup

    1. Pour in a good 3 squirts of golden syrup or corn syrup

    2. Add 1 tsp of flour and stir

    3. Add at least five drops of red food colouring.

    4. Add a tiny drop of blue of get that rich red colour.

    5. You now have your sticky blood!

    So go and have fun and freak your friends out!

    I’ve you liked this you’ll love my other GROSS science experiments!

    Image of pretend blood made in a conical flask for a Halloween science activity

    If you fancy some more science in the kitchen, try one of the 60 ideas in my new book, Snackable Science.

    Last Updated on October 1, 2022 by Emma Vanstone

    « Spooky Circuits for Kids
    Easy Firework Science Activity Ideas »

    Safety Notice

    Science Sparks ( Wild Sparks Enterprises Ltd ) are not liable for the actions of activity of any person who uses the information in this resource or in any of the suggested further resources. Science Sparks assume no liability with regard to injuries or damage to property that may occur as a result of using the information and carrying out the practical activities contained in this resource or in any of the suggested further resources.

    These activities are designed to be carried out by children working with a parent, guardian or other appropriate adult. The adult involved is fully responsible for ensuring that the activities are carried out safely.

    Reader Interactions

    Comments

    1. Liz Burton

      October 27, 2011 at 5:11 pm

      Haha that’s very cool. *wonders what she can do with it*

      Reply
      • Multiple Mummy

        October 29, 2011 at 12:18 pm

        Acting make up and role play? Or maybe just to be silly! Good thing to do after they have hurt themselves to distract and show how they heel! 🙂

        Reply
    2. Actually Mummy...

      October 28, 2011 at 9:59 pm

      I have to say I just love your website! We are learning so much and the kids think it is so cool 🙂 We will blog about one of your experiments one of these days!

      Reply
      • Multiple Mummy

        October 29, 2011 at 12:19 pm

        That is so good to hear and we would love you to! Still trying to get people to find us so all the support is gratefully received! 🙂

        Reply
        • Extra

          October 11, 2013 at 3:27 am

          Public tastes currently influence the entertainment marketplacein a mannerthat was improbable prior tothe web as well as the virus-like delivery of media and alsofinished entertainment material. As you add to that distribution on the internet news reports online sites, from rumor to complete films. It really is a completely new world. Some of it good, some not.

          Reply
    3. Beth

      October 30, 2011 at 5:40 pm

      Very cool! Thanks for the recipes! I wanted to invtie you to come link up at my TGIF linky party – http://livinglifeintentionally.blogspot.com/search/label/Linkey%20Parties
      ~Beth

      Reply
    4. maggy, red ted art

      November 02, 2011 at 6:25 pm

      Oooh gorey indeed!!! And most definitely a great Halloween Science Project!

      Thank you for sharing on Kids Get Crafty!!

      Maggy

      Reply
    5. Mom to 2 Posh Lil Divas

      November 07, 2011 at 2:12 am

      very cool experiment! Thanks for sharing on the Sunday Showcase. Hope to see you this week –
      http://momto2poshlildivas.blogspot.com/search/label/Sunday%20Showcase

      Bern

      Reply
      • ScienceSparks

        November 07, 2011 at 1:43 pm

        Thank you. I’m sure you will see us most weeks! 🙂

        Reply
    6. Ticia

      November 07, 2011 at 5:05 am

      My brother used to make this by the bucketful for his “movies,” thanks for linking up to Science Sunday (and yes I’m late getting around from last week).

      Reply
      • ScienceSparks

        November 07, 2011 at 1:42 pm

        oooh sounds like lots of fun! xx

        Reply

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