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Ren Clean Skincare

Magnesium Booster Bath Salts

750ml | SKU# UK200021566

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Rest and restore the mind, body and complexion with REN Magnesium Booster Bath Salts, a bath product containing a high concentration of magnesium salts extracted from a 250-million-year-old Zechstein sea.

This product helps turn any bath into a relaxing haven, providing the mind and body with a magnesium boost that works to relieve muscle tension and promote a healthy, happy mind. The salts inspire restful sleep and help the body to unwind following a period of exercise.

Adding just two to three handfuls of REN Magnesium Booster Bath Salts into warm bath water can help mind, body and soul. The salts can be used as a companion to REN’s Atlantic Kelp and Microalgae Anti-Fatigue Bath Oil.

Harness the healing power of magnesium with REN Magnesium Booster Bath Salts, which contains a high concentration of magnesium to help soothe the mind and muscles.
Key Benefits:
  • Restorative bath salts deliver a magnesium boost to mind, body and soul
  • Turns bath time into a relaxing retreat
  • Contains magnesium extracted from 250-million-year-old ocean rock
  • Can be used after exercise
  • Work to soothe the mind and relieve muscle tension
How to Apply

Add 2 to 3 handfuls of the salts to a warm bath, lay back and relax for 20 minutes.

Ideal when used with Ren’s Atlantic Kelp and Microalgae Anti-Fatigue Bath Oil.


Free on all orders, over £40
Delivery within 2-4 working days.* (Please note, during Sale periods and promotional offers this may take up to 7 working days).

Free on all orders over £70*
Order before 5pm, and receive your order the next working day.**

Order before 5pm, and receive your order on the morning of the next working day.**

Order before midday (Monday to Friday only) and receive your order by 6pm the same day. Only available for central London postcodes (check the map here).

Order before 2pm on the preceding Friday, and receive your order before 12pm the following Saturday.**

Order before midday and collect your order for free from your chosen store in 2-5 days.
Read more about our Click & Collect service.
Click and Collect orders can not include Pre/Back order items, these must be ordered separately.

Delivered instantly by email, Free Delivery

If you'd like to send your order as a gift, we can add a beautiful finishing touch with our gift wrap. Choose complimentary gift wrap at checkout.

*This option is available for all UK Mainland addresses, excluding the Scottish Highlands and other parts of Scotland.

About Ren Clean Skincare
Built on the pillars of performance and purity, the Ren Clean Skincare collection is formulated with natural plant and mineral derived bio-actives. It’s clean beauty that delivers results.
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What other customers think
Magnesium Booster Bath Salts is rated 4.2 out of 5 by 14.
Rated 5 out of 5 by from Ache buster I’ve used salts for a while but these are really outstanding. I’ve got an injured knee and shoulder and while I suspect the bath helps on its own - these genuinely ease the ache. I leant them to a friend after she did a walking marathon on limited training and fearing the worst and she was stunned by the impact they had on her recovery time. Pretty good recommendation!
Date published: 2019-09-25
Rated 5 out of 5 by from Magnesium Salts I love magnesium products anyway, I think they can do a lot of good for the body. When REN bought this range out I was thrilled! I have the body wash, oil and these salts which I use for a detoxifying bath. You get a lot for your money and I’m careful with how many I use as I don’t want to waste them.
Date published: 2019-09-12
Rated 4 out of 5 by from Soothing I have recently become really interested in how I can add more magnesium into my life after reading about its skin calming properties. As well as taking supplements I have been intrigued to try it topically and as a bath lover this seemed like the perfect set up! I can't say how effective it is at delivering magensium but these are a real pleasure to use in the tub!
Date published: 2019-08-27
Rated 3 out of 5 by from Extremely relaxing I wanted to try this because I have read so much about the good effects of magnesium. Like everything by Ren, it feels natural and creates a really lovely relaxing bath. I think I felt an improvement in weary muscles after exercise but honestly not enough to make me buy it again instead of the glorious Ren rose bath oil.
Date published: 2019-08-12
Rated 4 out of 5 by from lovely relaxing bath I really like this Ren Bath salt. The salt quickly dissolves and the smell is lovely! I have sensitive skin so it can be difficult to find a brand that agrees with me but Ren has always been amazing! I find the smell not too overpowering and it is very relaxing
Date published: 2019-08-09
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