CEL™ RETINAL SERUM
WRINKLES - FIRMNESS - RADIANCE - SKIN QUALITY
Why you need this serum:
With CEL™ Retinal, Skin Diligent takes “ anti-aging ” to the next level. Combining the power of encapsulated retinal with a proprietary epigenetic bioactive complex, this serum doesn’t just improve the skin’s surface. It acts at the heart of cells, on the very mechanisms of longevity, to slow down the aging process and prolong the skin's youthful potential.
Why this serum is different:
Designed to combine performance and tolerance, CEL™ Retinal serum combines:
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0.15% encapsulated retinal with sustained release: more stable, better tolerated and 11 times more effective than retinol.
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20% of the CEL™ (Cellular Epigenetic Longevity) complex : a patent-pending technology designed to act on 10 fundamental mechanisms of aging.
Thanks to its encapsulation technology, the formula offers gradual release, increased stability and exceptional tolerance, even for sensitive skin.
A triple action on collagen:
It stimulates collagen in an exceptional way by acting on 3 different pathways:
- Protects existing collagen by inhibiting collagenase ( enzymes that damage collagen).
- Stimulates the production of collagen types I & III.
- Strengthens the production of pro-collagen.
On the skin, these mechanisms translate into:
- Reduction of wrinkles and fine lines
- Restores tone and firmness
- Evens out the complexion's radiance
- Refines skin texture
- Reduces pore size
An ultra-light texture , serum with an instant satin finish that absorbs quickly, leaves no traces and is not greasy
Bonus : an ultra-clean, no-compromise formula: fragrance-free, preservative-free, tested against endocrine disruptors.
One of the few retinoids suitable for sensitive skin, even compatible with the microneedling pen.
- Tested free of endocrine disruptions of estrogenic and androgenic types.
- 98.8% natural.
- Suitable for all skin types, regardless of gender. Ideal for targeting the signs of aging, it is also suitable for acne-prone skin and can be used by teenagers.
- Retinoids, including retinal, are not recommended for pregnant or breastfeeding women.
- Use every night (every other night if you are new to retinoids). Always follow with sunscreen during the day.

INGREDIENTS
Aqua, Propanediol, Dimethyl isosorbide, Glycerin, C9-12 alkane (vegetal origin), Sorbitol, Decyl glucoside, Protium heptaphyllum resin, Caesalpinia sappan extract, Coco glucoside, Hydrolyzed vegetable protein, Hydrolyzed moringa oleifera seed extract, Adansonia digitata pulp extract, Cyamopsis tetragonoloba gum, Acacia senegal gum, Lecithin, Tocopherol, Helianthus annuus seed oil, Sodium citrate, Retinal, Xanthan gum, Ascorbyl palmitate, Sodium benzoate.
Fragrance-free
No preservatives
DIRECTIONS FOR USE
Shake well before use. Apply 3 to 4 drops of serum to clean, damp skin.
- Sensitive and reactive skin or skin that has never used retinoids : Every other evening for 2 weeks, then every evening as tolerated.
- Skin that has already used retinoids : Apply the serum every evening.
Use in addition to a day cream with SPF protection.
The LONGEVITE SKIN DILIGENT system :
For optimal synergy and enhanced effectiveness, cleanse the skin with the TRIPLE ACTION CLEANSER . Then apply the CEL™ Retinal serum , let it penetrate, and finish with the EXOSOME ADVANCED Night Cream
PACKAGING
Glass bottle and pipette for recycling
Nitrile tip
Outer case made of cardboard, recyclable FSC paper
CEL™ COMPLEX
A pioneer in epigenetic research, Skin Diligent has created the CEL™ complex - Cellular Epigenetic Longevity: a new generation complex of botanical biotechnological extracts, peptides and exosomes that acts on the 10 key mechanisms of aging, well beyond simple surface correction.
Prolongs cellular health, slows skin aging and delays senescence.
Results: Wrinkles are smoothed, the skin is firmer and regenerated at the heart of its cells to anticipate aging, preserve its youthful capital and maintain its cellular health.
ENCAPSULATED RETINAL
Vitamin A is one of the most studied active ingredients, with over 50 years of research and clinical evidence. However, in its common form (retinol), it can be unstable and irritating.
To combine performance and tolerance, Skin Diligent has selected a new generation retinal, encapsulated in a natural Protium heptaphyllum resin: a plant shield that protects the molecule from oxidation, releases the active ingredient gradually and reduces the risk of irritation. Result: an active ingredient 11x more powerful than retinol , highly bioavailable and perfectly tolerated, even by sensitive skin.
✔ Maximum tolerance
✔ Optimized bioavailability
✔ Increased effectiveness, proven by studies
Clinically Proven
Clinically proven results and excellent tolerance.
- 95% skin is smoother , firmer and more even
- 95% skin quality improves day by day
- 90% skin is visibly younger
- 95% found their skin was healthier after using the serum.
*Results obtained after 1 application every 2 evenings for 3 weeks, then every evening for 1 week (28 days) - 20 women - 35 to 60 years old - sensitive skin.
FAQ – CEL™ Retinal Serum
What is the difference between retinal and retinol?
Retinal is a vitamin A derivative further along the conversion chain: it requires only one enzymatic transformation to become active (compared to two for retinol), which makes it more potent and effective than retinol, while reducing the risk of irritation.
Does CEL™ Retinal Serum cause irritation or burning?
No. CEL™ Retinal Serum does not cause “retinol burn,” the burning, redness, or peeling sensations often associated with traditional retinoids.
Thanks to its encapsulated, time-released retinal and CEL™ Complex , it works effectively without damaging the skin. Its tolerance has been tested on sensitive skin , and it is ideal for those who have already reacted to traditional retinols.
Why encapsulate retinal in a plant resin?
Encapsulation in a natural resin of Protium heptaphyllum serves as a plant shield which:
- protects the molecule from oxidation and instability
- allows for gradual release into the skin
- reduces the risk of irritation, including on sensitive skin
Is it suitable for all skin types?
Yes. Thanks to its encapsulation technology and the combination with the CEL™ Complex, the serum is designed to offer optimal tolerance, even on sensitive and acne-prone skin.
Can I use it while pregnant or breastfeeding?
No, as with all retinoids, retinal (and its derivatives) is not recommended during pregnancy and breastfeeding. Although CEL™ Retinal has been tested without risk of estrogenic and androgenic endocrine disruption, vitamin A accumulation, like retinoids, may lead to a risk of teratogenicity.
I am a teenager, can I use this serum?
For teenagers, we only recommend it for acne-prone skin as a treatment.


