BI-PHASE DUO

MORNING DUO

£114.00 GBP
£108.00 GBP

PROVEN TO HYDRATE + MOISTURISE

26% increase in skin hydration after 2 hours of use of Cellular Hydration Serum. Corneometer CM825: Instrumental measure on 20 women aged 25-65

100% of adults tested had a decrease in transepidermal water loss (TEWL) after only 2 hours of applying the Vitamin C Serum in Oil. Tewameter TM30: Instrumental measure on 20 women aged 20-60

CELLULAR HYDRATION SERUM

INDEPENDENT CLINICAL TEST

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

Skin is healthier, softer & more elastic.

Vitamin C Serum in Oil

INDEPENDENT CLINICAL TEST

Hydrates, reduces fine lines, evens skin tone, prevents blemishes & breakouts, improves appearance of skin, makes skin softer, prevents blackheads.

Skin is healthier & more radiant.

TESTED FREE OF OESTROGEN ENDOCRINE DISRUPTION

SKIN DILIGENT IS THE FIRST BRAND TO TEST ITS SKINCARE FORMULATIONS FOR ENDOCRINE DISRUPTION ON LIVING CELLS, TO ENSURE THE SAFETY OF ITS PRODUCTS FOR WOMEN WHO ARE PREGNANT, BREASTFEEDING AND POST OESTROGEN-RELATED CANCER.

FAQ

What benefits will I see with the 2 serums?

Regular use of the 2 serums will visibly improve your skin appearance, giving it a plumper, softer and more even skin tone. The 2 serums are formulated to reinvigorate and regenerate your skin cells, giving you a healthy, radiant appearance.

What is the order of application?

For use during your morning routine, apply 3-5 drops of Cellular Hydration Serum on a clean face with slightly moist skin. It is a great product for a quick facial massage.

Then apply 3-5 drops of Vitamin C Serum-in-Oil.

There is no need to follow with a moisturising cream.

I get occasional spots on my chin. Will the 2 serums help?

Yes, the antioxidant, anti-inflammatory elements will help minimise acne and blemishes. If you get occasional spots, massage 1 drop of Vitamin C Serum-in-Oil on the spot for a few seconds to help it clear up more quickly. Then follow the normal combination of Cellular Hydration Serum + Vitamin C Serum-in-Oil on the whole face.

Do I need a moisturising cream after these 2 serums?

No, moisturising creams are not necessary. During the coldest months of the winter, you may need extra reinforcement, but otherwise, no.

  • 5 stars: 69 (99%)
  • 4 stars: 1 (1%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
F
Florence S. (France)
Excellent

This is the first time I’ve felt truly comfortable after following my morning and evening skincare routines. Just two products in the morning, two in the evening… it’s easy and the results are clear to see

A
Abir Diamantaras
Love it

Excellent. My face was moisturised the whole day without feeling greasy and wonderful to apply.

I
Isabella G. (France)
Very good products

I have incorporated the three serums into my daily routine. Very nice skincare products, no reaction to Retinal. I plan to continue using them.

F
Florence d. (France)
A real benefit

I have been using the bi-phase duo for two years and I can really see the benefits: a more radiant complexion, smoother and more comfortable skin, and less noticeable wrinkles. As a result, I started using CEL Retinal serum in the evening and my skin feels even more comfortable. It's also worth noting that I've reduced my spending because these products are very concentrated and only a few drops are needed. I highly recommend them and am telling everyone I know about them.

L
Laurence F. (France)
Perfect

Hydration guaranteed

C
Christine A. (France)
Very satisfied

I'm on my third bottle. I really like the texture and the results on my skin. The night cream leaves my skin looking beautiful when I wake up, moisturised and comfortable.

M
Marie-Caroline H. (France)
Plumped, radiant and hydrated

The dual serum provides hydration and vitamin C, while its oil phase leaves the skin feeling comfortable and nourished

L
Ludivine H. (France)
Power duo

Brings comfort and enhances the skin's beauty

A
Anne P. (France)
I love it!!!

I've been using Skin Diligent products for over two years now, and honestly, I'm not going to switch anytime soon.
My skin is much better hydrated and looks more vibrant.
Thank you, Skin Diligent!

I
Isabelle O. (France)
Excellent product

I have been using this duo for several years and my skin has become more hydrated and flawless.

c
carole g. (France)
Effective

I recommend these effective products that make a difference.

M
Marine D. (France)
Very good

These two products are perfect for my skincare routine. They are essentials that I buy often for myself and my family

V
Valérie S. (France)
Exceptional

I have been using these serums for several years now and I can't do without them!

F
Françoise B.
No more tightness

I like the two-phase formula because it leaves my skin feeling soft and well moisturised. The serums are quickly absorbed by the skin and you immediately feel a sense of comfort. It's perfectly suited to my mature skin. I particularly like the fact that it doesn't leave a greasy film. I highly recommend it.

S
Sandrine P. (France)
Fan of VITAMIN C serum

Vitamin C serum is an excellent product that I recommend. I am less keen on Cellular Hydration, which I find less enjoyable. It absorbs too quickly and does not leave the skin feeling moisturised.

S
Sabrina M.
Excellent

A routine that is as enjoyable as it is quick!

M
Margot D.
Perfect

I've been using all your products for two years now and I love them... I can't wait to try your new retinal treatment.

M
Marie-Pierre S.
Maximum hydration

The combination of the two products has restored moisture to my skin, it doesn't feel tight anymore. I no longer need to use any moisturiser and my complexion is more even.

L
Lehanneur C. (France)
Top routine

It's been a year now and I'm amazed by the results.
My skin is perfectly hydrated and its texture has improved; I also really like the healthy glow I get from the vitamin C.
Top marks, well done!

M
Magalie S.
enjoyable and effective

2 very good products, I use the vitamin C serum in the morning before my SPF50 day cream, it's the perfect combo, and the cellular hydration serum in the evening under my night cream.

C
Christine D. (France)
Very satisfied

Enjoyable products to apply, with good moisturising from the Vit C serum! I recommend it and I know I'll continue the routine.

C
Carole G. (France)
Perfect!

Very good products, effective and enjoyable to use

C
CAROLE G. (France)
Exceptional!

I haven't found anything better since I discovered this brand, over 2 years ago now!

G
Gaelle D. (France)
Perfect harmony, happy skin

Good texture, good smell, my skin is as hydrated as it needs to be and it shows. I just add an SPF 50 and it's perfect.

V
Valérie C. (France)
Healthy glow effect

Very satisfied... my skin is well hydrated and plump.

My skin stays elastic and hydrated all day long.

P
PASCALE B. (France)
Like a second skin

very comfortable, soft and luminous skin

S
Sophie B. (France)
Perfect

I no longer need any other cosmetic products to keep my skin nourished and beautiful.

H
Helene N. (France)
I love it!

I have been using it for over a year and I notice my skin is more hydrated, it is also smoother and there are no new spots

M
Murielle G. (France)
Won Over

Completely satisfied.
An enjoyable sensation of well-moisturised skin, whatever the season.
I won't be able to do without it.
I'm looking forward to a new eye contour product that's as effective as all your other products (but I don't know if it's in your plans...)

F
Florence d. (France)
Definitely effective

I apply the 2 serums, Cellular Hydration and Vitamin C, every evening before going to bed. After 1 month, the results are already visible, better complexion and skin texture and above all comments from friends that my wrinkles have diminished. I'm going to continue because it's the first time I've found really effective products.

M
Michèle D. (France)
Very satisfied

After two weeks, I already find my skin much more hydrated and even-toned.

B
Beatrice B. (France)
Change of routine!

My redness got worse after intense sun, but a week after using the two serums there was a clear improvement, so I decided to try the 3rd serum and the night cream! Well done for the soothing effect and intense hydration.

M
Maria H.

Good quality... I'm satisfied 🤩

D
Dominique P.
Excellent range

Very positive experience

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