Ancient Magnesium Bath Flakes Ultra with OptiMSM is a topical magnesium bath for muscle relief, delivering bioavailable magnesium chloride from the Zechstein seabed and MSM for joint support. This heritage of premium skin care products and a commitment to pure, well sourced actives sits behind it. It helps you unwind tense muscles, ease fatigue, and support recovery.

Available Sizes & Variants:

750g bath flakes – ideal for regular soaks and value-friendly use.

Benefits & Features:

• Soothes tense muscles for quick relief after workouts.
• Supports joint comfort with the synergy of magnesium and MSM absorbed through the skin, unlike epsom salt baths.
• Promotes deeper relaxation as you soak, helping you unwind in the tub.
• Magnesium chloride is sourced from the Zechstein seabed, renowned for purity, while OptiMSM provides a premium sulfur source that supports skin care and mobility.
• Used in regular skin treatment routines, this soak supports calm, soft skin and an energised feel after bath time for those long days, leaving you ready for whatever comes next.

Ancient Minerals has built a reputation around mineral bath therapies, emphasising purity and skin friendly formulas. The Zechstein seabed magnesium chloride is prized for purity, while OptiMSM is described as the purest, safest MSM available. This blend nods to traditional skin care routines by turning a simple bath into a skin treatment that also supports muscle comfort after a long day.

Aqua, Magnesium Chloride, Methylsulfonylmethane, Magnesium Sulfate, Potassium Chloride, Sodium Chloride and Calcium Chloride

• GTIN: 91037574732
• Manufacturer: Good Health Naturally
• Categories: Blood Pressure SupplementsGood Health NaturallyLuxury Bath and Shower ProductsMagnesium Supplements, Tablets & VitaminsMinerals SupplementsMSM Supplements, Tablets and PowdersNew ArrivalsPeriod PainStress Relief & Calming Supplements
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

For a foot bath, dissolve 150-200g (3-4 scoops) of flakes in warm water and soak for at least 20 minutes. For a full bath soak, add 250-300g (4-6 scoops) of flakes to warm bathwater and relax for at least 20 minutes to fully rejuvenate your body.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Magnesium (Chloride Form)

Magnesium is an essential mineral that takes part in energy metabolism, nerve function and muscle function. In a topical bath, magnesium chloride provides a bioavailable form that can be absorbed through the skin for body-wide use.

This form comes from natural mineral sources and is designed for skin contact and hydration as part of a bath product formulation.

What Does Magnesium Do?

Magnesium helps with normal muscle function and supports electrolyte balance, contributing to general energy metabolism as recognised by EFSA and NHS guidance.

Some studies suggest that topical magnesium can raise cellular magnesium levels and support muscle recovery with regular use, aligning with broader evidence on transdermal absorption and muscle health.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Ancient Minerals sits in line with Welzo's tough partner pick standards by offering a specialised, prestige focus on purity and skin-friendly actives. The brand's heritage rests on sourcing magnesium chloride from the Zechstein seabed and pairing it with OptiMSM, underlining a commitment to clean, high-purity ingredients that aid topical delivery. This reputation for premium actives and a skincare-forward approach puts Ancient Minerals ahead in our vendor evaluation, reinforcing our confidence in a long-term, quality-driven partnership. To back our confidence, our medical team has evaluated this brand for compliance with our ingredient quality standards, reinforcing trusted sourcing practices. Learn more about our evaluation framework with our medical team and how we verify ingredient quality with how we verify ingredient quality.

The product blends highly bioavailable magnesium with MSM to maximise both uptake and cellular benefits, a formulation the brand calls synergistic for targeted topical use. This makes it a particularly well-suited pick for a bath flakes format, aligning with our product-fit criteria and consumer needs.

Welzo picked Ancient Minerals because of its strong quality focus, long-standing industry presence, and clear emphasis on purity of actives. This brand stands out from competitors through its specialised actives sourcing and a clear, science-informed approach to topical supplementation. This alignment with our expert-supported selection process supports a reliable, transparent supply for this supplement.