H2k Botanicals
OMG Magnesium Sensitive Spray Starter Kit
Couldn't load pickup availability
The best way to start with OMG
The Starter Kit includes a 550ml bottle of OMG Magnesium Sensitive Spray, plus an empty 175ml bottle for your bedside table and an empty 30ml bottle for your bag or travel. Both smaller bottles are included free. Fill them from the 550ml and refill as you go.
Most people know within the first week whether OMG works for them. Every bottle is backed by our 28-day happiness guarantee, so you have a full month to try it at home, on the go, and wherever you need it. If it doesn't work for you, you don't pay.
What OMG Magnesium Sensitive Spray is used for
Our best-selling topical magnesium spray is formulated to ease aches and pains and support a better night's sleep.
Applied before bed, it helps with bedtime aches and stiffness, including knees, back, joints, and arthritis-related discomfort. By spraying directly onto the affected area, many people find it helps the body settle as part of their evening wind-down.
Customers commonly use it to:
- Support sleep and relaxation
- Ease restless or uncomfortable legs at night
- Help the body calm down and recover after a long day
- Reduce muscle tension before and after exercise
Why choose OMG over other magnesium sprays
Most magnesium sprays contain magnesium chloride and water. OMG is a different formula, specifically made for people with sensitive skin.
The spray absorbs in around 30 seconds with no greasy residue, no sticky feeling, and no stinging or itching. It was created by our founder Hazel, who has very sensitive skin herself and would not have launched a product she couldn't use every night.
Key ingredients:
- Magnesium at 20% supports muscle function and relaxation. A higher concentration than most sprays.
- Arnica is a natural pain reliever for joint and muscle discomfort.
- Rosehip is a natural anti-inflammatory that can help with stiffness.
- Lavender helps promote relaxation and prepare the body for sleep.
- Kalahari melon seed oil calms sensitive skin and prevents the itching most magnesium sprays cause.
Over 2,000 bottles sold. 4.9 star average across our reviews.
How the Starter Kit works
The 550ml refill bottle stays at home. Use it to fill your 175ml bottle (which lives on your bedside table) and your 30ml bottle (which goes with you). When your smaller bottles run low, refill them from the 550ml. One kit lasts for months.
How to use
Spray onto thin skin: the back of the knee, inner wrist, back of the neck, or directly onto any area that aches. Avoid the face and eyes. It dries in around 30 seconds. You can rub it in with your hands to speed absorption.
For sleep, 2-3 sprays before bed is all you need. For aches and stiffness, spray directly onto the affected area as needed.
The 28-day happiness guarantee
Try the Starter Kit for a 28 days. Use it every night. Take it with you when you travel. If it doesn't work for you, contact us and we will arrange a full refund. We offer this because we know what happens when people actually try it.
Full ingredient list: Magnesium Chloride, Magnesium Sulphate (Epsom salts), Rosehip oil, Lavender essential oil, Arnica flower oil, Kalahari melon seed oil, Preservatives, Solubiliser and water.
A note on jewellery: Magnesium spray, especially when combined with natural oils or perspiration, can occasionally react with silver and cause tarnishing. This is a common chemical reaction that is not harmful and can usually be reversed with a silver cleaning cloth. We recommend applying the spray to clean, dry skin and allowing it to absorb fully before putting on jewellery.

Frequently Asked Questions
How quickly does the spray work?
OMG absorbs through the skin in around 30 seconds. Many customers notice a difference within minutes. Unlike tablets, which can take 30 minutes or more to pass through the digestive system, a spray delivers magnesium directly through the skin into the bloodstream.
Will it irritate sensitive skin?
The cream is formulated to be gentle on the skin. It does not contain the harsh ingredients that cause stinging in many other magnesium products. If you have very sensitive skin or a specific skin condition, we recommend testing a small amount on your inner forearm first. Every tub comes with a 28-day happiness guarantee.
Why use a spray instead of magnesium tablets?
Magnesium tablets pass through the stomach, where up to 50% of the magnesium can be lost during digestion. Tablets can also cause stomach discomfort, bloating, or a laxative effect. A spray bypasses the gut entirely, absorbs through the skin in seconds, and lets you apply it directly to the area that needs it most.
Learn moreWhere should I apply it?
Apply 2-3 sprays to areas where the skin is thinnest for fastest absorption: the back of the wrists, behind the knees, or the back of the neck. For restless legs, spray directly onto the back of the calves. Allow about 30 seconds for it to dry. There is no sticky residue, and it will not transfer to pyjamas or bedding.
What makes OMG different from other magnesium sprays?
Most magnesium sprays contain magnesium chloride and water. OMG contains five active ingredients: magnesium at 20% (a higher concentration than many sprays), arnica as a natural pain reliever, rosehip as a natural anti-inflammatory, lavender for relaxation, and Kalahari melon seed oil for sensitive skin. Crafted in Harrogate under the guidance of our founder, a botanist with over 25 years of experience.
Learn moreCan magnesium spray help with perimenopause and sleep?
During perimenopause, declining oestrogen levels affect how the body absorbs and uses magnesium. Lower magnesium can disrupt melatonin production and make it harder for the nervous system to switch off at night. Applying magnesium through the skin before bed may help the body relax and prepare for sleep. Many of our customers in perimenopause report improved sleep quality. We always recommend speaking with your GP alongside any supplement.
Learn moreWhat is the 28-day happiness guarantee?
Try the cream for 28 days. If it does not work for you, contact us and we will arrange a refund. We stand behind every product we make.
