How to Make Heart Bath Bombs

Looking for a unique Valentine’s Day gift to make for friends and family? Then try making your own DIY heart bath bombs. Kids will love helping to make these!

RELATED: Bath Bomb Recipe for Kids

DIY Heart Shaped Bath Bombs

These bath bombs are made to mold into little hearts. But you could also use this recipe to add to any mold.

Bath bombs can be expensive to buy – so these make a unique gift for family members for Valentine’s Day or Mother’s Day!

Safety with Bath Bombs

We love doing bath bombs in our house as a fun activity during bath time. We do it sparingly though – as the ingredients in bath bombs can irritate skin if used too frequently. I would recommend to not use a bath bomb more than once a week with kids.

Since bath bombs contain baking soda and citric acid, we need to take some precaution when making them. I have included all of the safety tips you will find on any bath bomb making kit so please read and keep these in mind when making your own.

A couple of notes of safety: 

• Adults only should make the bath bombs. Kids can help with measuring and stirring under adult supervision.
• Keep away from eyes and mouth. Wash hands thoroughly after handling.
• Do not put the bath bombs near your mouth or nose. We always wash hair and body first before placing the bath bomb in the water. Do not allow kids to put their head under the water once the bath bomb is in the bath. Do not allow kids to drink the bath water.
• Rinse eyes immediately with water for several minutes if product comes in contact with them.
• Do not use if you have any broken or irritated skin.
• Rinse the tub and body after use.
• Bath bombs are not intended for cleansing the body. Avoid holding the bath bomb once it is placed in the water.
• In case of adverse reaction, stop using and contact a physician.
• Baking soda may cause an allergic reaction.
• Do not use bath bombs every day. Use sparingly in a month and not more than once per week.

Do the Bath Bombs Stain the Tub?

Only use a few drops of food coloring and you shouldn’t have a problem with staining in your tub. Because your bath is filled with water the food coloring becomes very diluted when dissolved in the tub. Test a small amount first. If any coloring remains after the bath, use a paper towel to wipe it off right away, then rinse with water. Use only 1 bath bomb per bath.

Storage Tips for Bath Bombs

Store inside a sealed plastic bag in a cool, dry place. If left out exposed to air, it will gradually lose some fizzing effect. Also avoid touching the bath bombs with wet hands.

Supplies Needed

Here is what you’ll need:

• Heart mold
• 1/4 cup citric acid
• 1/4 cup baking soda
• 2 tablespoons cornstarch
• 2 tablespoons melted coconut oil
• Pink food dye (optional if you want to have a colored bath bomb)

Directions to Make Heart Bath Bombs

1. Combine ingredients.

In a large bowl, combine your citric acid, baking soda, and cornstarch and mix well.

2. Add food coloring.

In a separate bowl, add a couple of drops of pink food coloring to the melted coconut oil and mix.

3. Mix wet and dry ingredients.

Slowly add your wet mixture to the dry mixture and mix well until you’ve added it all in.

4. Mix together.

Once all of your wet mixture is added, your mixture should feel like damp moldable sand.

5. Fill the mold.

This recipe should fill 9 small hearts in a mold. If you have a larger mold, you may need to double the recipe.

Start filling your heart mold with your mixture, making sure to press the mixture firmly into the mold.

6. Let dry.

Let the bath bombs dry overnight and then carefully pop them out of the mold.

These heart shaped bath bombs turn out so pretty and are simple to make! Make them for Valentine’s Day, a birthday or Mother’s Day.

Print the recipe & directions here!