How to Make Homemade Bathtub Crayons

How do I make homemade bathtub crayons for my kids to use in the bath?

About a year ago, I was introduced to bathtub crayons. I was very intrigued by the concept that kids could play with crayons for the bath. Little Bear went through a stage in his life where he hated baths. Luckily, some fun bath toys quickly remedied that problem, but I wish I had known about bathtub crayons back then. He would have loved coloring while bathing. Plus, homemade crayons for the bath are made with soap. That means, little hands get extra clean when they play with bathtub crayons.

Homemade Bathtub Crayons Tutorial -- Moms Have Questions Too

There are two kinds of bathtub crayons that I know of. The first are the store bought kind like these Crayola bathtub crayons, these Munchkins Bath Crayons, and these Endangered Species Bath Crayons. I have not used any of the store bought bathtub crayons, but I have heard they are tricky to clean up. Mostly I am too cheap to buy something that I can make homemade. So, I decided to make homemade bathtub crayons.

Here are the supplies needed:

First, cut your soap into small chunks. The soap I bought was already cut into chunks, so I skipped this step. My chunks were about 2”x1 ½ “x1”.

Next, put one soap chunk into your pot and put on very low heat. It will take about 5 minutes for the soap to melt completely.

Homemade Bathtub Crayons Tutorial -- Moms Have Questions Too

Homemade Bathtub Crayons Tutorial -- Moms Have Questions Too

While you are waiting for the soap to melt, spray cooking spray into the slots where you will be pouring the soap. This step is optional, but it does make it easier to remove the bathtub crayons after they have cooled. I forgot to do this for the first few bathtub crayons that I made and I was still able to remove them. However, they were MUCH easier to remove when I sprayed the ice cube tray with cooking spray first.

Homemade Bathtub Crayons Tutorial -- Moms Have Questions Too

Add food coloring. I experimented with different amounts of food coloring and 20 drops seemed to be the ideal. The color of the crayons got darker and darker the more food coloring I added, until about 20 drops. After that they pretty much looked the same. The color is still kind of light on the bathtub walls, but it is still dark enough to see and my boys absolutely love them!

Homemade Bathtub Crayons Tutorial -- Moms Have Questions Too

Next, stir the food coloring in.

This next step should be done very quickly with as little cooling of the soap as possible. Remove the pot from the stove and quickly pour the soap into the ice cube tray. My chunks of soap made about 1 ½ crayons in the water bottle ice cube trays.

Homemade Bathtub Crayons Tutorial -- Moms Have Questions Too

Let the soap sit for about an hour while the soap hardens. If desired, make some more bathtub crayons.

Homemade Bathtub Crayons Tutorial -- Moms Have Questions Too

Finally, use the bathtub crayons on your bathtub wall. As I mentioned before, the color of these homemade bathtub crayons is not very dark. It does show up though and both Little Bear and Smiley Man BEG to play with these crayons for the bath. I would not suggest making a yellow crayon. It will not really show up, no matter how much food coloring you add, so you might as well skip it altogether.

Homemade Bathtub Crayons Tutorial -- Moms Have Questions Too

I wondered what would happen if they crayons were left in the tub for a while. Eventually they will fall apart so you don’t want to leave them in there for too long. This is what it looked like after about an hour sitting in the water (just so you know, it was a short crayon, only about an inch long).

Homemade Bathtub Crayons Tutorial -- Moms Have Questions Too

One last thing, it is very easy to clean up after using these crayons for the bath. Simply get a washcloth, loofah, or even your hand wet with warm to hot water. Now, wipe the crayon off of the bathtub wall. Voila! Easy. I have even let the crayon sit on the wall for several days (certain masterpieces must be cherished longer, after all) and it was still just as easy to clean up. I love that these bathtub crayons are made with soap because I’m not worried about the color getting on skin or staying on the wall.

Homemade Bathtub Crayons Tutorial -- Moms Have Questions Too

Plus, we use bathtub crayons for a really fun preschool activity. I’ll be posting about it in about a week so check back to see it.

5 Responses to How to Make Homemade Bathtub Crayons

  1. What a great idea! My kiddos would love this, we definately got to try these. Thanks for sharing on Share it Saturday, we will be featuring these tomorrow!
    -Leanne

  2. This looks like so much fun! We will be featuring your post in our Share It Saturday link Up party tomorrow. We would love if you stopped by again and shared…We love to see your creativity! We’ll also be sharing our featured posts on our FB page…swing by if you would like :) https://www.facebook.com/pages/Sugar-Aunts/406711342711382?ref=hl

    We have also created a Share It Saturday Group Pinterest board and are welcoming all participants to join up in collaboration…where you can feel free to pin up your posts and gain lots of great ideas, as well as potentially gain quite a few new viewers! If you are interested in joining us, the link will be on our post tomorrow. Hope to see you again soon on Share It Saturday :)
    Colleen at Sugar Aunts