
How to Use
1. Scoop
2. Apply
3. Sleep
Independent laboratory study · 2026
The results speak for themselves
We put Sweet Sleep Magnesium Butter through independent laboratory testing against one of the leading topical magnesium sprays. Same skin model, same conditions, tracked every hour for eight hours.
4,442%
Vs. baseline
More magnesium delivered into skin surface layers than the control baseline, in a laboratory model.
9,388%
Vs. leading spray
Greater magnesium delivery into skin surface layers than the leading spray under identical conditions.
8 hrs
Sustained delivery
Continuous magnesium delivery across a full eight-hour in vitro evaluation.
Eight hours later
Scientists imaged both products on identical skin models. Magnesium shows up green, the skin's own cells show up blue. At the eight-hour mark, Sweet Sleep still showed a strong signal while the spray had largely faded.
Green is magnesium delivered Blue is the skin's cells
Why a butter beats a spray
Leading spray
A flash flood
- Water-based mist evaporates in seconds
- A sudden mineral rush that burns out fast
- By four hours, the signal has largely dropped off
Sweet Sleep butter
A slow-drip reservoir
- Anhydrous botanical butter holds magnesium against the skin
- Slow, sustained release that also moisturises
- At eight hours, the signal is still strong
Sweet Sleep 8-Hour Delivery Study. Independent laboratory, 2026. Results measured in an in vitro skin model and refer to magnesium delivered into the skin's surface layers.


