Invisible ink

Five different ways to create homemade invisible ink that can be revealed from a heat source like a candle OR from watercolor paint.

How to create hidden messages and pictures using invisible ink and the science of oxidation!

When invisible ink technology progressed in the 20th century, the invisible inks of old became mostly a fun weekend experiment to do with our children.

write secret messages to your students with invisible ink! More

This invisible ink pen has a built-in UV light in the tip to see what you're writing and the invisible writings that you receive in return.

Learn how to make invisible ink with lemon juice and explore simple chemistry for kids! Perfect for home or classroom learning.

Hey Kids, ever wonder how you can make your over own invisible ink or write glow in the dark messages? Look no further, these easy and fun to make homemade recipes will have you writing like a secret agent in no time. Check out the recipes below to make your own homemade invisible ink and Glow in the Dark message recipes for Kids These recipes can be made with simple ingredients you may already have at home including lemons, salt, spoon, crayons. Check out this fun science experiment for…

Fun chemistry activity for spy and detective enthusiasts that uses an acid/base indicator to reveal a secret message using a special color-changing invisible ink. Only common household ingredients required. Unlike the traditional activity using lemon juice, this one does not require heat.

Muddly Puddly Laboratory | Avvy 👋🏾 on Instagram: "We love this invisible ink recipe because it uses just 3 household ingredients, the results are instant and striking, it’s our favourite combination of nature/science/art/magic, and it’s child friendly (non toxic, no heat required). Method: To make the golden reveal potion, mix turmeric powder into some hand sanitiser or rubbing alcohol (around 1/4 tsp is plenty in around 2 tablespoons of the sanitiser). Note: please keep in mind that…