CELLULAR HYDRATION SERUM
CELLULAR HYDRATION SERUM
CELLULAR HYDRATION SERUM
CELLULAR HYDRATION SERUM
CELLULAR HYDRATION SERUM
CELLULAR HYDRATION SERUM
CELLULAR HYDRATION SERUM
CELLULAR HYDRATION SERUM
CELLULAR HYDRATION SERUM
CELLULAR HYDRATION SERUM

CELLULAR HYDRATION SERUM

A patented active, with probiotics, for skin that feels replenished and looks plumper.

$80.00 Sale Save

30ml

A lightweight hydrating serum for skin that feels dry or tight. Morning or night.
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For a complete morning system in 2 steps, buy it with

Tested free of endocrine disruption

Morning or night

Made in France

What you can expect

Skin feels replenished.

Skin looks plumper and more comfortable.

Tested free of estrogenic and androgenic endocrine disruption.

tested for visible results

  • 100% found the serum soothing*
  • 100% noticed softer skin*
  • 100% noticed healthier-looking skin*
  • 91% found that the serum tightens pores and reduces blemishes*

Based on a 28-day clinical study on 22 women aged 25 to 65, used twice daily. Half of the participants had sensitive skin, and the other half had blemish-prone skin.

A patented active, with probiotics

The Cellular Hydration Serum is built around a patented active and probiotics, chosen to help skin hold on to moisture and stay comfortable for longer.

HYALURONIC ACID + MAGNESIUM

Optimizes cellular water balance. Draws moisture deep into the skin. Visibly plumps, smooths, and reduces the appearance of fine lines.

PROBIOTICS

Supports skin microbiome balance for a visibly healthier, more resilient complexion.

SACCHAROMYCES - PATENTED.

Activates vitamin D receptors in skin - the biological gatekeepers of the skin’s natural defence system.

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 disruption

your daily dose of comfort

  • Vitamin D-like: A patented ingredient that acts on the skin’s vitamin D receptors to promote healthy skin barrier.
  • Strengthens Skin Barrier & Brightens: It not only boosts the adhesion of skin cells by improving permeability of the skin barrier but also helps brighten the skin thanks to its antioxidant capacity.
  • Calming and Soothing Effects: It reduces cellular stress which help enhance skin resilience and reduce signs of aging.

01 - On damp skin
Apply three to five drops to slightly damp skin, just after cleansing.

02 - In the morning
Follow with your Vitamin C Serum-in-Oil, then sunscreen.

03 - At night
Or layer it under your night cream. It works either time.

A flexible, daily hydrating step. Use it whenever suits your routine.

Nothing hidden. We test the whole formula, so we show you the whole formula.

Water (Aqua), Propanediol, Glycerin, Inulin, Sunflower Seed Oil (Helianthus annuus seed oil), Protium heptaphyllum resin, Tara Gum (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, Fragrance (Parfum) (100% natural)

Tule Explains

Introducing

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SACCAROMYCES
GRAPE FERMENT EXTRACT



Vitamin D without the Sun: A patented ingredient that acts on the skin’s vitamin D receptors to promote healthy skin cells, equivalent to 200 IU of vitamin D when used twice daily.


Strengthens Skin Barrier & Brightens: It not only boosts the adhesion of skin cells by improving permeability of the skin barrier but also helps brighten the skin thanks to its antioxidant capacity.


Calming and Soothing Effects: Thanks to its communication capacity with the immune system, it reduces cellular stress enhancing skin resilience and reducing signs of ageing.

Faq - Questions, answered

In the morning, this serum and your Vitamin C are enough, no separate cream needed. At night, you can layer a night cream over it.

Either. It is a flexible hydrating step that works at any time of day.

Every finished formula is tested free of estrogenic and androgenic endocrine disruption. Not single ingredients. The whole formula.

It is gentle enough for daily use. As with any new product, patch test first.

  • 5 stars: 38 (95%)
  • 4 stars: 2 (5%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
L
Lucie Styring (United Kingdom)
Brilliant

Great product, will repurchase. Thank you

A
Angela Hillary (United Kingdom)
Love skin diligent 🙂

I have several of your products and love all of them. I am 74 with the inevitable wrinkles, however the quality of my skin has improved……more plump, more even in tone and just healthier all round 🙂

L
Laetitia B. (France)
A must-have

It’s a product I recommend all the time

C
Catherine (Switzerland)
Exceptional

A brilliant serum that I’ve been using regularly for a long time.
I’m always very happy with it. The clean formula is really important to me.

D
Dominique B. (France)
What a relief!

I've been using Skin Diligent products (serum, vitamin C and night cream) for almost two years now, and I'm really happy to have finally found a routine that suits me perfectly. My skin is radiant and no longer feels tight. It feels so comfortable!

c
christine d. (France)
Currently undergoing restoration...

This serum allows my skin, which is sensitive to the cold and rosacea, to gradually restore itself. We'll see how it goes in the long term, but I can't wait to add it to my routine :)

P
PASCALE B. (France)
Essential

I can't do without it anymore. It feels like a second skin, and my only regret is not having discovered Skin Diligent sooner.

L
Laetitia S. (France)
Very good serum, very satisfying 👍👍👍

Very good texture on the skin, good product

H
Hélène D.
Effective, lightweight and moisturising

A product that is comfortable to apply as well as being effective

C
Claire L.
Delighted

A new beginning

I found the hydration I had been searching for with this serum.

E
Elodie D. (France)

Excellent as always

B
Béatrice B. (France)
Never without...my cellular hydration serum...

I'm on my second bottle and I'm a fan! Immediate relief if my skin is uncomfortable, it becomes soft and velvety.

K
Kathya B. (United Kingdom)
Excellent

Moisturises well but doesn't leave the skin greasy, very nice texture! Like all Skin Diligent products, a must-have!

F
Florence D. (France)
High quality

Immediate moisturising effect!

M
Mary Mori
Great product

This product has made a real difference to my skin. I had always had problems keeping my skin hydrated but not anymore.

V
Valérie M. (France)
Super

My skin doesn't usually tolerate much and now everything is fine! My skin is smoother. I'm going to try the vitamin C serum!

M
Marine (France)
A must

I love this serum, which is part of my morning routine. I love its texture and fragrance. It moisturises my skin just right (I have combination skin), I apply the Vit C oil serum afterwards, it's the perfect combo!

N
Nelly G. (France)
Super

I use the hydration serum and then the vitamin C serum in oil, not greasy at all! It's a great morning routine. For holidays I also use the 2 in the evening to nourish my skin.

S
Stephanie F. (France)
Exceptional

Fresh texture, very enjoyable scent, absorbed very quickly without feeling greasy. I love it!

E
Elisabeth T.
Excellent serum

A serum that's very enjoyable to apply, absorbs quickly and doesn't feel sticky. I've only been using it for 10 days and my skin feels very comfortable, my complexion looks great in combination with the cream in the evening, and my skin wakes up looking great!

S
Sophie P. (France)
Excellent

My mature skin absorbed this serum straight away. Doesn't stick, leaves skin soft and perfectly hydrated for the day. Very nice discovery. I'm a serum fan and this is clearly one of my favourites.

D
Dominique V. (France)
Super moisturiser before vitamin C

Perfect for moisturising the skin

C
Carole G.
Perfect

Effective, enjoyable, this product combined with vitamin C is simply perfect!

V
Veronique B (France)
Excellent Product

I'm delighted with this serum! I use it morning and night with the vitamin C serum in the morning. My skin is fair, fine, dry and very fragile, but since I've started using this serum it's been rehydrated, even-toned and soft.
No more flaky skin, no more imperfections... I can't do without it. I love it!

I
Isabelle D. (France)
A must-have

Immediate and long-term effect on the skin, which is more toned and radiant. Completely integrated into my daily routine, along with the moisturising serum. Very nice composition too! Thank you Skin Diligent

M
Maite L (France)
Addictive / ultra-moisturised skin

A pleasure for the senses and the skin

M
Myriam B. (France)
Won over

My skin is much brighter, moisturised and combined with your vitamin C it makes for a winning combo. Thank you and I have also just placed an order of your latest product and probiotics 👍 I highly recommend your products.

E
Elisabeth M.
Excellent moisturizing serum to go with the indispensable vitamin C serum. Real moisturizing power

A very easy and pleasant serum to apply, which I put all over my face and neck. I was left with comfortable, moisturized skin, after the serum had been absorbed very quickly. It is perfect as a first application before the vitamin C serum. The 2 combinations are simple and ultra-effective for healthy, luminous skin.

I
Isabelle M.
I can't live without it 🤩

I love the vitamin C serum as well as this cellular hydration serum, they complement each other exceptionally well and I use both morning and night.

S
Sabine V. (United Kingdom)
Excellent product

Very hydrating, just as promised

A
Aurelie B. (United Kingdom)
Very hydrating

A moisturizing and repairing serum that I used morning and evening on vacation in the sun. It is perfect for my skin, which has remained intact, soft and supple.

A
Agnes B.
Very pleasant to apply

Very light feeling, just started using it, too early to report on result.

E
Emmanuelle B.
Great product!

I use the Cellular Hydration Serum in combination with the Vitamin C Oil Serum and my skin has never been so soft! It's the first time I see a real difference!