CELLULAR HYDRATION SERUM
A serum designed to replenish the skin’s moisture reserves and strengthen its barrier. It delivers lasting hydration, smooths fine lines and helps prevent dullness. The foundation of healthy skin.
- Multi-level hydration (+26% in 2 hours*).
- Strengthens the skin barrier and helps prevent moisture loss.
- Boosts vitamin D receptors.
30 ml
from £45
4–5 days
Morning and evening, 3 to 5 drops on slightly damp skin, before your other serums. Shake before use.
HOW TO USE
INGREDIENTS
PACKAGING
WHAT DOES THE CELLULAR HYDRATION SERUM DO?
It combines hyaluronic acid and magnesium to optimise the skin’s moisture balance, with a patented active that acts on vitamin D receptors and probiotics that support the skin microbiome. It is the first step of every Skin Diligent routine.
HYDRATION THAT WORKS AT THE CELLULAR LEVEL.
The combination of hyaluronic acid and magnesium helps optimise the skin’s moisture balance, delivering increased hydration in just 2 hours (+26%), plumper-looking skin and visibly smoother fine lines.
MORE THAN JUST A HYDRATING SERUM.
A patented active ingredient acts on vitamin D receptors, while probiotics support microbiome balance. Together, they help strengthen the skin’s natural defences.
PROBIOTICS FOR THE SKIN BARRIER.
A complete synbiotic system of probiotics, prebiotics and postbiotics helps strengthen the skin barrier.
VISIBLE RESULTS, PROVEN TO HYDRATE, DERMATOLOGICALLY TESTED
Soothed & softer skin
Healthier-looking skin
Reduced appearance of pores & breakouts
Reduced appearance of fine lines
*Based on a 28-day self-assessment study involving 22 women aged 25–65.
HOW TO USE IT IN YOUR MORNING ROUTINE
The Cellular Hydration Serum is step 1 of the Skin Diligent morning routine.
01 · Hydrate. 3 to 5 drops of Cellular Hydration Serum on slightly damp skin.
02 · Protect. 3 to 5 drops of Vitamin C Serum-in-Oil, massaged into face and neck. Avoid the eye area.
03 · Shield. Finish with your sunscreen.
In the evening, apply it after the Triple Action Cleanser.
3 THINGS NO OTHER SERUM COMBINES
PATENTED PEPTIDES
Activates vitamin D receptors in the skin, key biological regulators of its natural defence system.
COMPLETE SYNBIOTIC SYSTEM
Strengthens the skin barrier through a combination of probiotics, prebiotics and postbiotics.
HYALURONIC ACID
A medium molecular weight works synergistically with to the magnesium chloride to plump skin cells with hydration. In a lightweight, non-sticky gel.
WE TEST WHAT ALMOST NO ONE TESTS.
Chemicals can behave differently together than alone. It is called the cocktail effect. So we test the finished formula, not single ingredients.
Tested free of estrogenic and androgenic endocrine disruptions.
CELLULAR HYDRATION SERUM FAQ
I have sensitive and reactive skin. Can I use this serum?
Yes, this serum is perfect for soothing the skin. The probiotics, prebiotics, the vitamin D-like and hyaluronic acid work together to support your healthy cell proliferation while calming the skin.
Why are probiotics important in skincare products?
Probiotics are defined as live good bacteria. On the skin, they defend us against pathogenic microbes, help to hydrate the skin and to repair skin wounds. We invite you to read our blog article on microbiome for more information.
Probiotics help in diversifying our skin microbiome and the right diversity is key in allowing the skin to carry out its job properly.
What's the difference between probiotics, prebiotics, postbiotics?
Prebiotics are the food the probiotics live on, such as nutritional fibre. Probiotics are live good bacteria. Postbiotics are the by-products that probiotics produce to benefit human health.
You can find more information on our blog .
Does the product need to be refrigerated?
The serum does not need to be refrigerated, but it must be kept in a cool, dry place, with temperatures under 25 degrees Celsius.