Cellular Hydration Serum

£47.00 GBP
How to use

Apply morning and night. Shake before use. Keep in a dry and cool place below 25 degrees Celcius


Aqua, Propanediol, Glycerin, Inulin, Helianthus annuus seed oil, Protium heptaphyllum resin, Caesalpinia spinosa gum, Sodium hyaluronate, Aloe barbadensis leaf juice powder, Magnesium Chloride, Saccharomyces/Grape ferment extract, Lactobacillus ferment, Coco glucoside, Decyl glucoside, Ethyl lauroyl arginate HCl, Sodium citrate, Sodium benzoate, Parfum (100% natural)


A glass bottle with dropper, to be recycled.
Cardboard packaging, FSC paper to be recycled.



26% of increase in skin hydration after 2 hours of using Cellular Hydration Serum*

100% of testers had an increase of skin hydration after 2 hours of using Cellular Hydration Serum

*Corneometer CM825: Instrumental measure on 20 women aged 25-65

independent lab test

Clinical Users Test

Hydrates, soothes, calms, evens skin tone, reduces fine lines, tightens pores, reduces breakouts, reduces redness.

Skin is healthier, softer & more radiant.

Active ingredients PRE-PRO-POST BIOTICS

Saccharomyces/Grape ferment

Origin: French biotech ingredient. Patented, it acts on the skin vitamin D receptors to target cell proliferation, sebum regulation, wound healing, immune system.


Lactobacillus ferment helps diversify the skin microbiome


Inulin sourced from chicory roots, helps the probiotics work better and conditions the skin.

Hyaluronic acid

A medium molecular weight to hold water, chosen to work with the magnesium chloride.

Certified free of oestrogenic endocrine disruptors

Skin Diligent is the first brand to test its skincare products for endocrine disruption on living cells, to ensure the safety of its finished products.

Most frequent questions

I have sensitive and reactive skin. Can I use this serum?

Yes, this serum is perfect for soothing the skin. The probiotics, prebiotics, the yeast-based ingredient plus 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 in the hydration of the skin, in repairing skin wounds, and many more. We invite 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.

Does the product need to be refrigerated?

The serum can be kept in ambiant temperature, but must be kept in a cool place under 25˚Celcius.