"Cell renewal serum" is a product name, not a measured result. In a cosmetic serum it usually means actives aimed at how skin looks as its surface renewal slows with age: smoother, firmer-looking, better hydrated. To judge one, ignore the name and check a few things: which actives it uses, whether each is at the level its studies used, and what those studies actually measured.
Our own version is Cellular Renewal Serum, a night serum made in France. This guide explains what "cell renewal" and "cellular skincare" mean, what a cosmetic can and cannot promise, and how to read the evidence behind any serum with this name, ours included.
What does "cell renewal" mean for skin?
The outer layer of skin, the epidermis, replaces itself all the time. New cells form at the base, move up, flatten and are shed from the surface. With age this cycle slows, and older cells linger at the surface for longer, which can make skin look duller and less smooth. That process is what most brands mean when they say "cell renewal" or "cell turnover".
"Cellular skincare" is a looser label still. It usually means ingredients described in terms of what they do around skin cells, such as plant cell cultures or salmon-derived DNA fragments. Neither phrase is a regulated term.
Can a cosmetic serum actually speed up cell renewal?
This is where the name and the rules part ways. In the US, a product sold to change the structure or function of the body is regulated as a drug. A cosmetic can only promise to change how skin looks. So the ingredients with the strongest evidence for speeding up turnover sit in a different category:
- Prescription retinoids such as tretinoin are drugs, prescribed by a doctor.
- Exfoliating acids such as glycolic and lactic acid loosen dead cells at the surface so they shed sooner.
- Renewal-style cosmetic actives, the kind in most "cell renewal" serums, are studied for appearance: how deep wrinkles look, how hydrated and firm skin feels and looks.
A cosmetic serum that tells you it repairs DNA or regenerates skin is claiming something a cosmetic cannot claim. We do not claim either for ours.
How do you tell if a cell renewal serum is worth buying?
- Named actives with percentages. "Plant stem cells" means little. "MossCellTec™ No. 1 at 2%" can be checked.
- The studied level. Ask what concentration each ingredient's own study used, and whether the serum matches it.
- What was measured. Wrinkle depth by imaging, hydration, water loss and elasticity are measurements. "Skin feels renewed" is an opinion.
- Who ran the study. Most cosmetic evidence comes from the ingredient maker, on the ingredient, not on the finished serum. That is normal, but it should be said.
- Allergens on the front. Some renewal actives are animal-derived. You should not have to find that in the small print.
For more on what firmness actives can and cannot do, see skin firmness after 35.
What is in Cellular Renewal Serum, and what was measured?
- Salmon-derived polynucleotides (DNA Gel PH™) at 5%, the highest concentration its supplier has tested. In the supplier's evaluation on 10 volunteers over 8 days, it produced a significant increase in skin's mechanical elasticity. For the background, see polynucleotides in skincare, explained.
- MossCellTec™ No. 1 at 2%, the level its own studies used. Against placebo over 28 days, the appearance of crow's-feet wrinkle depth fell 15%. In a separate test, all 23 women recorded a significant increase in skin hydration on the treated side within 14 days.
- PhytoCellTec™ Malus Domestica, a Swiss apple cell culture. Its maker's study used 2%, and our serum carries 1%. We print the gap rather than round it away.
These are supplier studies on the ingredients, not trials of the finished serum. Results refer to the appearance of skin and vary between people. The full sources are on the Cellular Renewal science page.
How do you use a cell renewal serum?
Ours is a night step: cleanse, press in a few drops on dry skin, then moisturiser. Patch test for 48 hours before first use, avoid the eye area, and wear sunscreen during the day. It contains salmon-derived DNA, so it is not vegan and not suitable for anyone with a fish allergy.
Cellular Renewal Serum
A French night serum with salmon polynucleotides at 5%, MossCellTec™ No. 1 at its studied 2%, and a Swiss apple cell culture at 1% (its study used 2%), every percentage printed, for skin that looks rested and full. Contains fish, not vegan. 30 ml lasts about two months. 60-day refund, opened or not.
Frequently asked questions
What does a cell renewal serum do?
It aims to improve how skin looks as surface renewal slows: smoother, firmer-looking, better hydrated. What a given serum can do depends on its actives and their studied levels, not on the name.
Is a cell renewal serum the same as retinol?
No. Retinol and prescription retinoids are vitamin A ingredients. Many renewal serums, including ours, use different actives and contain no retinol.
Should I use a renewal serum in the morning or at night?
Most are designed for night, when there is no sunscreen or makeup on top. Follow the label of the one you use.
When will I see a difference?
We cannot give you a date. The supplier studies ran from 8 to 28 days, but people vary, and a study timeline is not a promise.
Is Cellular Renewal Serum vegan?
No. The polynucleotides are salmon-derived, so it is not vegan and not suitable for anyone with a fish allergy.
Written by the VyVa Editorial Team.
Cosmetic product intended to improve the appearance of skin. Results refer to the appearance of skin and vary between individuals. This article is general information, not medical advice; speak to a dermatologist about any skin condition.
