Think You Know Epsom Salt? These Facts Might Surprise You
As a spa or salon professional, chances are Epsom salt has made an appearance in your services. While it's often overlooked, this simple mineral compound offers far more than basic softening. Whether you’re crafting a signature foot soak or integrating it into hydrotherapy services, these surprising facts will help you make the most of this time-tested mineral.
1. It’s Not Actually Salt
Despite its name, Epsom salt contains zero sodium. It's actually magnesium sulfate, which forms in crystal shapes that look like salt. Unlike sodium-based salts, Epsom salt is less likely to dehydrate the skin—making it a gentler choice for sensitive clients and longer soaks when followed with appropriate moisturization.
2. It Has Spa Roots That Go Way Back
Epsom salt was first discovered in 17th-century England, in the town of Epsom. Locals noticed the mineral-rich spring water soothed skin and aches, and soon it was being bottled and sold as a wellness remedy. By the 1700s, Epsom salt had gained a reputation as a luxurious and therapeutic ingredient used in European bathhouses and apothecaries. Early spa-goers would soak in warm basins infused with the mineral to relax and refresh. This long-standing legacy makes Epsom salt one of the most trusted and enduring ingredients in modern spa and salon services.
3. It Preps Skin for Better Results
Soaking in Epsom salt helps soften skin and open pores, making it a great pre-treatment step. For example, using a warm Epsom foot soak before a sugar scrub allows exfoliants and moisturizers to work more effectively. It’s also helpful before applying masks.
And it’s not just for feet—a warm elbow soak with Epsom salt can gently loosen dry or rough skin, making exfoliation easier and hydration more effective. This is especially helpful for clients with visibly dry or callused elbows.
Pro Tip: Always dissolve Epsom salt in warm—not hot—water to ensure even distribution and maximum comfort for the client.
Try This Elbow Soak: Combine 1/4 cup Epsom salt with 1 drop tea tree oil and 1 drop lavender essential oil in approximately 1/2 gallon of warm water. Soak your guest's elbows for 5–10 minutes, then gently exfoliate with a warm towel or scrub. Finish with a nourishing balm or shea butter-based cream to seal in moisture.
4. It’s Great for Aromatherapy Blends
Epsom salt is an excellent carrier for essential oils, helping disperse them evenly in water without the separation you’d get from oils alone. This makes it a perfect base for foot soaks and works equally well in hydrotherapy treatments. You can create custom blends based on the season or client preferences: lavender and chamomile for calm, eucalyptus and mint for a refreshing feel, or citrus and ginger for a bright, energizing touch.
Inspiration for Your Menu: Create a reflexology foot soak by adding 1/2 cup Epsom salt per gallon of warm water, 2 sprigs of fresh rosemary, a small handful of dried rose petals, and 2–3 drops of rosemary essential oil. Let it steep for a few minutes before the client arrives. Follow with a foot reflexology massage.
Worth a Second Look
Epsom salt might seem like a basic ingredient, but it has amazing benefits. From foot soaks to skin prep, this classic deserves a spot in your treatment room. If you're already using it—try a new blend. If you're not—maybe it’s time to bring it back.
Quick Tip: Always check your spa equipment’s user manual or manufacturer guidelines before using any additives, including Epsom salt—especially in hydrotherapy tubs or jetted footbaths.
Universal Companies is proud to have a team of experienced spa advisors on staff and welcomes you to consult with our professionals about spa products and supplies, including ingredients, equipment, and retail. Dedicated to the success of spa professionals everywhere, we're grateful to be recognized with multiple industry awards (thank you!) and proud to support the spa industry through mentorship and sponsorship.