Sore muscles are a good thing, it means you’re working hard! But just like putting gas in your car, it’s essential to fuel your body up again after a tough workout. That means internally and externally: 1) Eating the right things and, 2) Using the right topical treatments on your skin, which your body directly absorbs. This post-gym bath bomb recipe inspired by Free People is absolutely fantastic. . .

Arnica oil has been used in athletes training regimes for centuries because of it’s ability to relieve inflammation, ease joints and reduce swelling. This, coupled with the muscle-relaxing epsom salts, will have you back in the gym in no-time. The citric acid and baking soda help dissolve dirt and sweat to clear pores, while bentonite clay detoxes the entirety of the skin’s surface. #winning!

4 oz baking soda
4 oz citric acid
8 oz epsom salt
1 tbsp bentonite clay
4-5 tbsp avocado oil
3 tbsp arnica oil (such as weleda’s massage oil, it should not be pure but distilled with other oils)
15 drops essential oil, we used lavender


  1. Combine all ingredients really well
  2. On a deep cookie sheet (or specific bath bomb molds), add the mixture and press down firmly so everything is packed in tightly
  3. Freeze for at least 4 hours
  4. Throw in the bath and enjoy!

These will last a few months, store in an airtight container*

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  • Catherine Harmon

    Do you need to keep it frozen or can they be kept in a jar in the bathroom?

  • Sam Negrin

    you can keep a few in the bathroom for the week and leave the rest in the freezer until you’re ready to use.