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These “Lump of Coal” bath bombs make great stocking stuffers! Quick and easy to make, these coal bath bombs are sure to be a HUGE hit this Christmas season!

lump of coal diy bath bombs

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Lump of Coal Bath Bombs

It’s time for DIY Christmas gift ideas, and these fun lump of coal bath bombs make EXCELLENT stocking stuffers! They’re the perfect blend of naughty and nice! 

Related: You may also like this tutorial using Activated Charcoal Soap

What You’ll Need to Make Coal Bath Bombs:

* Note: Activated charcoal can sometimes appear “messier” in the bathtub than black cosmetic mica because it doesn’t completely dissolve in water; however, activated charcoal boasts a LOT of detoxifying and skin purifying health benefits, so the extra mess is certainly worth it! As long as you are including Polysorbate 80 in your recipe, your tub should stay clean no matter which option (or combination of the two!) that you choose to use!

These festive lump of coal bath bombs are SO much fun for Christmas! If you’re looking for a quick and easy DIY holiday gift idea, whip up a batch of these coal bath bombs that are sure to be a HUGE hit with friends, family, and co-workers!

Lump of Coal Bath Bombs Printable Recipe

A Close Up of 4 Stacked "Lump of Coal" Bath Bombs on a Red and White Striped Background

Easy Lump of Coal Bath Bombs

These “Lump of Coal” bath bombs make great stocking stuffers! Quick and easy to make, these coal bath bombs are sure to be a HUGE hit this Christmas season!

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Yields: 7 Bath Bombs

What You’ll Need:

  • 3 cups Baking Soda
  • 1 1/2 cups Citric Acid
  • 2 Tbsp Cream of Tartar
  • 2 Tbsp Sodium Lauryl Sulfoacetate (SLSA)
  • 1/2 tsp Black Cosmetic Mica Colorant or Activated Charcoal Powder, or combination of the two adding up to 1/2 tsp
  • 2 Tbsp Sweet Almond Oil
  • 1 1/2 Tbsp Polysorbate 80,
  • Fragrance Oil or Essential Oil
  • Witch Hazel, in a fine-mist spray bottle
  • 2 1/2" Round Metal Bath Bomb Molds, optional


  • In a large mixing bowl, thoroughly combine the baking soda, cream of tartar, SLSA. Stir in mica colorant and/or activated charcoal powder until completely combined.
  • In a small container, combine the oil, fragrance/essential oil, and Polysorbate 80.
  • Stirring constantly, slowly mix the liquids into the dry ingredients until they are completely combined.
  • Add citric acid to the mixture and stir until it is fully incorporated.
  • Test to see if the mixture is a moldable consistency – it should feel like slightly damp sand and hold together when squeezed in your hand.
    If the mixture is not quite wet enough to mold, spritz two to three times with a spray bottle of witch hazel and mix well. Repeat as necessary until the proper consistency is reached.
  • Mold the lumps of coal by hand OR fill both halves of the round bath bomb mold with the bath bomb mixture, making sure to overfill both sides of the mold just a bit. Press both halves of the mold firmly together.
  • Carefully release the bath bomb from the mold (tap the mold lightly with a wooden spoon if needed) and allow it to dry completely for 24-48 hours depending on the temperature and humidity of your location.
Did You Make This?Mention @HeidiKundin or tag #hihmakersclub on Instagram to show off your awesome work! ♥

For more detailed step-by-step instructions, photos, and tips and tricks check out How to Make Bath Bombs.

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quick and easy diy lump of coal christmas bath bombs
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