Big W stocks a solid range of bath salts, from basic Epsom soaks to magnesium-infused blends meant for muscle recovery and relaxation. But with dozens of options sitting on those shelves, it's not always obvious which ones are actually worth your money. If you've been searching for big w bath salts and want a straight answer on what's good, you're in the right place.
At Coorong Candle Co., we handcraft bath and body products using natural ingredients, so we know what separates a quality soak from one that's mostly filler and fragrance. That hands-on experience gives us a practical eye for ingredients, formulations, and value, whether the product comes from our workshop or a Big W aisle.
Below, we've rounded up the five best Epsom and magnesium bath salts you can pick up at Big W in 2026, with honest notes on what each one does well and who it's best suited for. No fluff, just useful detail to help you choose.
1. Dr Teal's Pure Epsom Salt Soaking Solution 1.36kg Soothe Sleep
Dr Teal's is one of the most recognisable names in the bath salts category, and this Soothe & Sleep variant is a consistent favourite at Big W. The 1.36kg tub gives you enough product for multiple soaks, making regular use practical without breaking your budget.
What you get
The formula centres on pure Epsom salt (magnesium sulphate) blended with lavender essential oil. The large crystal granules dissolve cleanly in warm water, leaving no gritty residue. Here is what comes in the tub:
- Pharmaceutical-grade magnesium sulphate
- Lavender essential oil for scent and relaxation support
- No artificial dyes or unnecessary additives
Why it stands out
Dr Teal's keeps the ingredient list short and purposeful. The magnesium sulphate concentration is high enough to deliver genuine muscle relaxation support, and the lavender oil gives it a real sleep-prep quality rather than a purely cosmetic fragrance. That combination is harder to find at this price than you might expect.
A 1.36kg tub at this price makes it one of the best value Epsom soaks in the Big W range.
Who it suits best
This product works well for anyone dealing with muscle soreness, general tension, or poor sleep quality. If you struggle to wind down at night, the lavender-magnesium pairing gives your pre-bed routine a practical and effective anchor.
How to use it for best results
Add 300g to 500g directly under warm running water so the crystals dissolve evenly. Soak for at least 20 minutes to give the magnesium adequate absorption time, and keep your water temperature comfortable rather than scalding to preserve the calming lavender effect.
Typical price at BIG W
You will typically find this product priced at around $12 to $15 in-store and online, making it one of the stronger value-per-gram options across the big w bath salts range.
2. Salts & Co Epsom Bath Salts 5kg
If you soak regularly, buying in bulk makes far more sense than picking up small tubs every few weeks. The Salts & Co 5kg Epsom Bath Salts at Big W is built for exactly that kind of consistent, high-volume use.
What you get
This pack delivers pure magnesium sulphate in a generous 5kg quantity with no added fragrance or colourants. You get straightforward Epsom salt crystals in a bulk format designed for regular, ongoing use without fuss.
Why it stands out
The sheer volume makes this one of the best value-per-gram purchases across the big w bath salts range. Unfragranced formulas also suit people with sensitive skin who react to essential oils or synthetic scents.
At 5kg, this bag lasts months with regular use, making it a practical choice for anyone who soaks more than once a week.
Who it suits best
This product works best for frequent bathers and athletes who need reliable muscle recovery support without added fragrance or extras.
How to use it for best results
Add 250g to 400g per bath and soak for at least 20 minutes in warm water to allow adequate magnesium absorption.
Typical price at BIG W
Expect to pay around $18 to $22 for the 5kg bag in-store or online.
3. The Base Collective Magnesium Bath Salts 200g
The Base Collective is an Australian brand focused on mineral-rich, skin-forward formulas, and their 200g Magnesium Bath Salts offer a compact option you can grab at Big W without a large upfront spend.
What you get
This pack contains magnesium chloride flakes blended with essential oils. It is smaller than most big w bath salts options on the shelf, but the concentrated mineral content still delivers a worthwhile soak from a single use.
Why it stands out
The Base Collective uses magnesium chloride rather than magnesium sulphate, which some research suggests the skin absorbs more efficiently. That distinction matters if muscle recovery and nervous system support are your primary goals from a bath soak.
Magnesium chloride is worth prioritising if skin absorption and stress relief are the main things you want from your bath routine.
Who it suits best
This pack suits people who want premium, Australian-made ingredients and a product that supports both deep relaxation and skin nourishment in the same formula.
How to use it for best results
Add the full 200g to a warm bath and soak for at least 20 minutes to give the magnesium chloride enough time to absorb effectively.
Typical price at BIG W
Expect to pay around $12 to $16 for this 200g pack in-store or online.
4. Pink Himalayan Bath Salts Natural Crystal Rocks 100g
Pink Himalayan bath salts are one of the most visually distinctive options across the big w bath salts range. This 100g pack uses unprocessed crystal rocks mined from ancient salt deposits, giving it a mineral profile that goes beyond standard Epsom formulas.
What you get
You get natural pink crystal rocks that slowly dissolve in warm bathwater, releasing trace minerals including magnesium, potassium, and calcium. The pack is unfragranced and additive-free, letting the raw mineral content do the work.
Why it stands out
Himalayan salt contains 84 trace minerals in their natural form, which sets it apart from processed Epsom salt alternatives. The crystal format also dissolves more gradually, giving you a gentler release of minerals throughout your soak.
If you prefer a completely natural, additive-free bath product, this is the most straightforward option on the shelf.
Who it suits best
This pack suits people with sensitive skin or fragrance sensitivities who still want mineral-rich bathing without any added extras.
How to use it for best results
Add the full 100g to warm running water and let the crystals dissolve before stepping in. Soak for 20 to 30 minutes for best mineral absorption.
Typical price at BIG W
Expect to pay around $5 to $8 for this 100g pack in-store or online.
5. Bath Salts Milk Carton Assorted 600g
The Bath Salts Milk Carton Assorted 600g stands out immediately for its novelty packaging, making it one of the more eye-catching products across the big w bath salts range. The milk carton format is a deliberate design choice aimed at buyers who want something that looks gift-ready straight off the shelf.
What you get
This product contains 600g of assorted scented bath salts packed into a single carton, giving you multiple fragrances and colours within one purchase rather than committing to a single scent.
Why it stands out
The combination of novelty presentation and variety makes this a practical pick for gifting without needing extra wrapping or preparation.
The milk carton format is one of the most shelf-ready gift options in the bath salts category at Big W.
Who it suits best
This pack suits people shopping for gifts or occasions where presentation matters, or anyone who enjoys rotating through different scents rather than using the same formula every time.
How to use it for best results
Add one portion of the assorted salts to warm running water and soak for at least 20 minutes to get the full fragrance and mineral benefit from each variety.
Typical price at BIG W
Expect to pay around $8 to $12 for this 600g carton in-store or online.
Quick pick for your next soak
Each of the big w bath salts options above serves a different need, so your best pick depends on what you want from your soak. For genuine muscle recovery and sleep support, the Dr Teal's Soothe & Sleep is the most complete formula on the list. For bulk value, the Salts & Co 5kg bag is hard to beat. If you want a premium Australian formula, The Base Collective delivers magnesium chloride in a concentrated pack. The Pink Himalayan crystals work best for sensitive skin, and the milk carton assorted pack is the go-to when you need a gift straight off the shelf.
If you want to take your bath routine further, our handmade bath bombs use Epsom salt, sunflower oil, and kaolin clay to give your skin something extra. Browse the full range of natural handmade bath bombs from Coorong Candle Co. and find your next favourite soak.