Epsom Salt (Magnesium Sulfate) | Organic & USP Grade
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- $ 17.99
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- $ 17.99
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- per
Pure USP Grade Magnesium Sulfate for relaxing bath soaks, soothing foot soaks, and garden plant care. Our pharmaceutical-grade, fast-dissolving formula is third-party lab tested and packaged at our FDA-registered facility in California.
At a Glance
- What it is: USP-grade magnesium sulfate heptahydrate (MgSO₄·7H₂O), commonly called Epsom salt
- Common uses: Bath soaks, foot soaks, sitz baths, beauty exfoliation, garden magnesium supplement
- Why choose ours: Pharmaceutical-grade purity, third-party lab tested for heavy metals, fast-dissolving formula, packaged at our FDA-registered facility in Madera, California
BEST FOR
USAGE CALCULATOR
Epsom Salt Usage Calculator
Calculate the right amount for your bath, foot soak, or garden application.
HOW MUCH EPSOM SALT SHOULD I USE?
How Much Epsom Salt Should I Use in a Bath?
For a standard bathtub (about 40 gallons), use 2 cups (approximately 400 grams) of Epsom salt. Add while the water is running to help it dissolve, then soak for 20-30 minutes. For a lighter experience, use 1.5 cups; for a more concentrated soak, use up to 2.5 cups.
- Standard bath (40 gal): 2 cups (400g)
- Large/garden tub (60 gal): 3 cups (600g)
- Foot soak (2 gal): ½ cup (100g)
- Sitz bath: 1 cup per 6 inches of water
FEATURES
Features
- USP Grade magnesium sulfate heptahydrate (MgSO₄·7H₂O) sourced from the USA
- Smaller grain size for faster, smoother dissolution—no gritty residue
- Approximately 9.8% elemental magnesium by weight
- Third-party lab tested for purity and heavy metal screening
- Suitable for bath soaks, foot soaks, beauty applications, and garden use
- Biodegradable and safe for septic systems
- Packaged at our FDA-registered facility in Madera, California
WHAT IS EPSOM SALT?
What Is Epsom Salt?
Epsom salt is magnesium sulfate heptahydrate (MgSO₄·7H₂O), a naturally occurring mineral compound first discovered in Epsom, England. Despite its name, it's not actually a "salt" in the culinary sense—it's a pure mineral compound containing magnesium, sulfur, and oxygen combined with water molecules.
Why People Use Epsom Salt Baths
Epsom salt baths have been used for generations as a relaxation ritual. Many people find that soaking in warm water with dissolved Epsom salt feels soothing after exercise, physical work, or a long day. The warm water helps muscles relax, and the ritual itself can be a calming part of an evening routine.
USP Grade vs Regular Epsom Salt
USP Grade means our Epsom salt meets the strict standards set by the United States Pharmacopeia for purity, quality, and safety. This pharmaceutical-grade designation ensures:
- Higher purity specifications than hardware-store or agricultural grades
- Rigorous testing for heavy metals and contaminants
- Suitable for personal care and therapeutic applications
- Consistent quality batch after batch
PRODUCT SPECIFICATIONS
Product Specifications
| Chemical Name | Magnesium Sulfate Heptahydrate |
|---|---|
| Chemical Formula | MgSO₄·7H₂O |
| Grade | USP (United States Pharmacopeia) |
| Appearance | White crystalline granules |
| Solubility | Highly soluble in water (fast-dissolving formula) |
| Elemental Magnesium | ~9.8% by weight |
| Elemental Sulfur | ~13% by weight |
| Source | United States |
| Packaged At | Madera, California (FDA-registered facility) |
| Testing | Third-party lab tested, heavy metal screened |
| Shelf Life | Indefinite when stored properly (does not expire) |
HOW TO USE
How to Use Epsom Salt
🛁 Relaxing Bath Soak
Step 1: Fill your bathtub with warm water (98-102°F is comfortable for most people).
Step 2: Add 2 cups (400g) of Epsom salt while the water is running.
Step 3: Stir the water to help it dissolve completely.
Step 4: Soak for 20-30 minutes.
Step 5: Rinse with fresh water if desired and pat dry.
- Add 10-15 drops of Lavender Essential Oil for aromatherapy
- Use evening baths as part of a wind-down routine
- Stay hydrated—drink water before and after
- Many people enjoy Epsom salt baths 2-3 times per week
🦶 Therapeutic Foot Soak
Step 1: Fill a basin or foot spa with warm water to cover your feet.
Step 2: Add ½ cup (100g) of Epsom salt.
Step 3: Stir to dissolve and soak your feet for 30-45 minutes.
Step 4: Dry thoroughly and apply moisturizer.
Popular uses: Many people enjoy foot soaks after a long day on their feet, to soften calluses before pedicures, or as a relaxing evening ritual.
💆 Sitz Bath
Amount: Add 1 cup of Epsom salt per 6 inches of water depth.
Duration: Soak for 15-20 minutes.
Frequency: As desired for comfort.
✨ Beauty & Exfoliation
Exfoliating Scrub: Mix equal parts Epsom salt with olive oil or coconut oil. Gently massage onto damp skin in circular motions, then rinse. The granules provide gentle exfoliation while the oil moisturizes.
Face Cleanser: Mix a small pinch of Epsom salt with your regular facial cleanser for gentle exfoliation. Use sparingly and avoid sensitive areas.
Hair Volume: Combine equal parts Epsom salt and conditioner. Work through hair and leave for 20 minutes, then rinse for added body.
GARDEN & PLANT CARE
Garden & Plant Care
Epsom salt provides two essential plant nutrients: magnesium and sulfur. Magnesium is a central component of chlorophyll and supports photosynthesis, while sulfur aids in protein synthesis and nutrient uptake.
Signs Your Plants May Need Magnesium
- Yellowing between leaf veins while veins stay green (interveinal chlorosis)
- Older, lower leaves affected first (magnesium is mobile in plants)
- Stunted growth or poor fruit/flower development
- Leaves curling upward at edges
Application Methods & Rates
| Method | Amount | Frequency | Notes |
|---|---|---|---|
| Foliar Spray | 1 tbsp per gallon of water | Every 2 weeks | Spray on leaves; apply early morning or evening |
| Soil Application | 1 tbsp per foot of plant height | Monthly | Work into soil around base; water thoroughly |
| Transplanting | 1 tbsp per gallon of water | At planting | Water seedlings with solution |
| Lawn Care | 3 lbs per 1,250 sq ft | Spring and fall | Spread with spreader; water in |
When NOT to Use Epsom Salt
- Soil test shows adequate magnesium — adding more won't help and may cause imbalances
- High-salt or saline soils — additional salts can worsen the problem
- No visible deficiency symptoms — if plants are healthy, they likely don't need supplementation
- Calcium-deficient soils — excess magnesium can interfere with calcium uptake
Can I Use Epsom Salt on Tomatoes?
Yes, many gardeners use Epsom salt on tomatoes. If your tomato plants show signs of magnesium deficiency (yellowing between leaf veins), apply 1 tablespoon per foot of plant height worked into the soil, or use as a foliar spray. Some gardeners apply at transplanting and again when flowers appear. However, if your plants look healthy, additional magnesium may not be necessary.
Best Plants for Epsom Salt
Magnesium-loving plants that often respond well to Epsom salt include: tomatoes, peppers, roses, potatoes, carrots, citrus trees, and leafy greens. Always observe your specific plants and soil conditions.
KEY BENEFITS
Key Benefits
Epsom salt has been used for generations as part of relaxation and self-care routines. Here's why people choose it:
💪 Post-Workout Ritual
Many athletes and active people enjoy Epsom salt baths after exercise as part of their recovery routine. The warm soak can feel soothing on tired muscles.
😴 Evening Relaxation
A warm bath is a classic way to unwind before bed. Many people include Epsom salt as part of their evening wind-down routine.
🧘 Stress Relief Ritual
Taking time for a long soak can be a simple form of self-care. The ritual of preparing and enjoying a bath helps many people decompress.
🦶 Foot Care
Foot soaks are a popular way to pamper tired feet, soften calluses before pedicures, and simply relax at the end of a long day.
✨ Gentle Exfoliation
The crystalline texture makes Epsom salt a popular ingredient in DIY body scrubs, helping to slough off dead skin cells.
🌱 Garden Support
For plants showing magnesium deficiency, Epsom salt provides a water-soluble source of magnesium and sulfur.
COMPARE MAGNESIUM FORMS
Epsom Salt vs Other Magnesium Forms
| Feature | Epsom Salt (Ours) | Magnesium Chloride | Magnesium Citrate |
|---|---|---|---|
| Chemical Name | Magnesium Sulfate | Magnesium Chloride | Magnesium Citrate |
| Best For | Bath soaks, garden use | Oral supplements, topical oil | Oral supplements |
| Bath/Soak Use | ✓ Excellent | ✓ Good | ✗ Not typical |
| Garden Use | ✓ Excellent | ✗ Not recommended | ✗ Not recommended |
| Dissolves Easily | ✓ Yes | ✓ Yes | Varies |
| Contains Sulfur | ✓ Yes (~13%) | ✗ No | ✗ No |
COMPLETE YOUR WELLNESS ROUTINE
Complete Your Wellness Routine
Complementary Magnesium Products
Essential Oils for Enhanced Baths
FREQUENTLY ASKED QUESTIONS
Frequently Asked Questions
Q Does Epsom salt produce bubbles in a bath?
No. Epsom salt is pure magnesium sulfate—a mineral compound, not a soap or detergent. It dissolves in water but doesn't create bubbles or foam. If you'd like bubbles, you can add a separate bubble bath product.
Q Will Epsom salt clog my drain?
No. Our Epsom salt has a fine grain size that dissolves completely during your soak. It won't clog drains or harm septic systems when used as directed.
Q How often can I take Epsom salt baths?
Many people enjoy Epsom salt baths 2-3 times per week. Listen to your body and adjust as needed. If you have any medical conditions, consult your healthcare provider.
Q Is this Epsom salt made in the USA?
Yes. Our Epsom salt is sourced from the United States and packaged at our FDA-registered facility in Madera, California. Every batch is third-party lab tested.
Q Does Epsom salt expire?
No. Magnesium sulfate is a stable mineral compound that doesn't expire when stored properly. Keep it in a cool, dry place in an airtight container to prevent clumping from moisture.
Q Can I use this if I have sensitive skin?
Our USP Grade Epsom salt is pure and free from added fragrances or dyes. However, if you have sensitive skin, start with a smaller amount (1 cup instead of 2) to test your reaction. Discontinue if any irritation occurs.
Q Can I add essential oils to my Epsom salt bath?
Yes! Essential oils are a popular way to enhance your bath experience. Popular choices include Lavender (10-15 drops for relaxation), Eucalyptus (8-12 drops), Peppermint (5-8 drops for cooling), or Sweet Orange (10-15 drops for an uplifting aroma).
Q What's the difference between Epsom salt and table salt?
They're completely different compounds. Epsom salt is magnesium sulfate (MgSO₄·7H₂O). Table salt is sodium chloride (NaCl). Epsom salt is used for baths and gardens; table salt is for cooking. They cannot be substituted for each other.
Q Is Epsom salt safe for my garden plants?
Yes, when used appropriately. Epsom salt provides magnesium and sulfur, which are essential plant nutrients. However, only use it if your plants show signs of magnesium deficiency or if a soil test indicates low magnesium. Excess magnesium can interfere with calcium uptake. See our Garden & Plant Care section for detailed guidance.
