Hyaluronic acid and collagen are the two most searched-for terms when it comes to wrinkles, and they’re almost always pitted against each other: “Is hyaluronic acid or collagen better?” In reality, they aren’t alternatives, but two different parts of the same structure. One holds onto water; the other supports the skin. And they work very differently in a cream.
The short answer: hyaluronic acid works as an active ingredient on the skin; collagen does not. L'hyaluronic acid applied in a cream or serum hydrates, smooths and plumps fine lines; collagen applied to the skin is a molecule too large to reach the dermis and works only as a surface moisturizer. To support collagen, you need actives that stimulate the skin to produce it, such as signal peptides. This is the approach LeLang Skin Care takes by pairing a hyaluronic acid serum like Hyaluron 8 Hydra Deep with a peptide serum like Collagenetic Serum.
Quick guide
| If the problem is… | What you need | What to look for in the INCI |
|---|---|---|
| Skin that feels tight, fine lines from dehydration | Hyaluronic acid and humectants | Sodium Hyaluronate, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid |
| Loss of tone, less defined facial contour | Actives that support collagen | Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, other signal peptides |
| Expression lines | Peptides that target facial muscle contractions, plus hydration | Acetyl Hexapeptide-8, Acetyl Hexapeptide-1 |
| Mature, dry, marked skin | Both: hydration and structure | Hyaluronic acid with signal peptides and antioxidants |
Article by Elisa Avalle, founder of LeLang Skin Care and dermocosmetics specialist. Cover image generated with the support of artificial intelligence.
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What is the difference between hyaluronic acid and collagen?
In the dermis, the layer of skin beneath the epidermis, collagen is the protein that forms the supporting fibers: it provides structure and strength, like the framework of a building. L'hyaluronic acid, on the other hand, is a long sugar, a polysaccharide, that fills the spaces between these fibers and holds large amounts of water. The review by Papakonstantinou and colleagues describes it as the key molecule for skin hydration, precisely because of its ability to bind water.
So it's important to distinguish between two functions. Collagen answers the question, “Is the skin firm?”, while hyaluronic acid answers, “Is the skin plump and hydrated?” As skin ages, it loses both, but for different reasons and with different visible effects: with less hyaluronic acid, it looks duller and develops fine lines; with less collagen, it loses firmness and deeper wrinkles form.
Why does skin lose collagen with age?
Collagen production slows for two reasons, highlighted in a study by Varani and colleagues published in the American Journal of Pathology, which compared the skin of young and older people. The first is the aging of fibroblasts, the cells that produce collagen: in the laboratory, those taken from people over 80 produced less type I procollagen than those taken from people aged 18 to 29. The second is mechanical: in older skin, collagen fibers are fragmented, and the less “taut” fibroblasts receive fewer signals to produce new collagen.
The point is that adding collagen from the outside doesn't solve collagen loss. Instead, we focus on what the skin is still able to do: protect it from what degrades collagen, above all the sun, and give it signals that encourage it to produce more.
Does collagen in a cream work?
Not in the way many people expect. Collagen is a very large protein: a single type I collagen molecule weighs about 300,000 daltons. In a paper that became a dermatology reference, Bos and Meinardi described the so-called 500-dalton rule: in practical terms, a molecule larger than this threshold cannot pass through the stratum corneum. So collagen applied to the face stays on the surface.
It isn't useless: it forms a film that retains water and leaves the skin feeling softer. But it does not integrate into the collagen in the dermis or replace it. That's why collagen isn't used as an active ingredient in LeLang Skin Care formulas: we work with what stimulates the skin to produce its own collagen. I discuss this in more detail in the guide to collagen in cosmetics.
The molecule you apply to your skin doesn't turn into collagen: it's the signal you give fibroblasts that prompts them to produce it anew.
Does hyaluronic acid in cream work?
Yes, and it's one of the few hydrating actives with solid clinical evidence. In a randomized study by Pavicic and colleagues, 76 women aged 30 to 60 with crow's feet applied creams containing hyaluronic acid of different molecular weights, from 50 to 2,000 kDa, twice a day for 60 days, and a cream without the active ingredient to the other eye. All the hyaluronic acid formulas improved hydration and elasticity; those with the lowest molecular weights, 50 and 130 kDa, also reduced wrinkle depth.
The reason is penetration. A study by Essendoubi and colleagues using Raman spectroscopy showed that low-molecular-weight hyaluronic acid (20-300 kDa) penetrates the stratum corneum, while high-molecular-weight hyaluronic acid (1,000-1,400 kDa) stays on the surface, where it forms a film that limits water loss. Two useful effects for two different purposes: that's why the most complete formulas combine different molecular weights. The differences are explained in the guide to hyaluronic acid in cosmetics.
So, what should you choose for wrinkles?
It depends on the type of wrinkle, and this is where the question “hyaluronic acid or collagen” is resolved.
- Fine lines, tight skin, signs that worsen in winter: these are often linked to dehydration. Lhyaluronic acid is the right active ingredient because it replenishes the surface layer with water and smooths it in just a few weeks.
- Deep wrinkles, sagging contours, less dense skin: what's missing here is structure. You need actives that support collagen, such as signal peptides, which, according to the review by Skibska and Perlikowska, stimulate fibroblasts to produce collagen, elastin, and fibronectin.
- Expression lines: they form through movement. Peptides that work on facial muscle contractions make a difference, and hydration completes the result.
For most faces after age 40, all three concerns coexist. That's why the practical answer isn't "or" but "and": an active ingredient that hydrates, one that supports the skin's structure, and daily sun protection to prevent undoing during the day what you build at night. For more on how skin loses collagen and how to protect it, see our dedicated article on collagen loss.
How do you combine them in a routine?
L's order is simple: first the more fluid serum, then the thicker one, and finally the cream. If you use two serums, apply hyaluronic acid first to freshly cleansed, still slightly damp skin, followed immediately by the peptide serum. In the morning, finish with sunscreen.
In the LeLang Skin Care range, Hyaluron 8 Hydra Deep combines eight forms of hyaluronic acid with different molecular weights for multi-level hydration of the stratum corneum.
HYALURON 8 HYDRA DEEP Face serum with 8 forms of hyaluronic acid, hydrating and plumping 8 forms of hyaluronic acid with different molecul... Discover HYALURON 8 HYDRA DEEP
Collagenetic Serum instead works on the skin's structure with a complex of signal peptides, including Palmitoyl Tripeptide-1 and Palmitoyl Tetrapeptide-7, together with gardenia plant stem cells and hyaluronic acid. It's designed for skin that has lost tone and firmness.
COLLAGENETIC SERUM Firming facial collagen-stimulating serum Biotechnological plant collagen and Matrixyl® stimulate new collagen. Gard... Discover COLLAGENETIC SERUM
If the wrinkles you're concerned about are mainly expression lines, see our guide to the best peptide face serum at the pharmacy. Both serums are available at LeLang partner pharmacies and para-pharmacies.
What about collagen supplements?
It belongs to another category, with a different mechanism of action. The meta-analysis by de Miranda and colleagues, covering 19 randomized studies and 1,125 participants, found that taking hydrolyzed collagen orally for about 90 days improves hydration, elasticity, and wrinkles compared with placebo. This is an interesting finding, but it concerns a dietary supplement, not a cosmetic: a cream and a supplement are not interchangeable and cannot be compared with each other. I explain why in collagen supplements or creams. If you're considering a supplement, consult your doctor or pharmacist.
A cosmetic product acts on the superficial layers of the skin and does not replace aesthetic medicine treatments, such as hyaluronic acid-based fillers, which are medical procedures. For these, consult a doctor.
Frequently asked questions
Which is better for wrinkles, collagen or hyaluronic acid?
In a cream, hyaluronic acid is a moisturizing active ingredient with clinical studies showing its effects on hydration, elasticity, and fine lines. Applied collagen stays on the surface because its molecules are too large. To support the skin’s collagen, you need active ingredients that stimulate its production, such as signal peptides.
Can hyaluronic acid and collagen be used together?
Yes, there is no incompatibility. A cream containing both moisturizes the surface well, but to work on skin structure, it’s better to pair hyaluronic acid with a serum containing signal peptides rather than rely on applied collagen.
Do collagen creams work?
They work as moisturizers: collagen forms a film that retains water and softens the skin. However, they do not penetrate the stratum corneum or turn into dermal collagen, so they do not replace the collagen lost with age.
How long does it take for hyaluronic acid to work?
L’The smoothing effect on the surface is visible after the first application. Improvements in hydration and elasticity can be measured after a few weeks: in the study by Pavicic et al., assessments were made after 30 and 60 days of twice-daily use.
At what age should you start using a peptide serum alongside hyaluronic acid?
There’s no set age: it depends on your skin. Generally, when loss of firmness or wrinkles that remain even when your face is relaxed appear, usually after age 40, hyaluronic acid alone is no longer enough, and it makes sense to add an active ingredient that supports skin structure.
Free 15-minute consultation with the founder
Not sure whether your wrinkles need hydration or structural support? Book a free virtual skincare consultation with Elisa Avalle, founder of LeLang Skin Care: we’ll look at your skin together and decide where to start.
Sources for this article
- Papakonstantinou E., Roth M., Karakiulakis G. (2012). «Hyaluronic acid: A key molecule in skin aging». Dermato-Endocrinology, vol. 4, no. 3, pp. 253-258.
- Varani J., Dame M.K., Rittie L., Fligiel S.E.G., Kang S., Fisher G.J., Voorhees J.J. (2006). «Decreased collagen production in chronologically aged skin: roles of age-dependent alteration in fibroblast function and defective mechanical stimulation». American Journal of Pathology, vol. 168, no. 6, pp. 1861-1868.
- Bos J.D., Meinardi M.M. (2000). «The 500 Dalton rule for the skin penetration of chemical compounds and drugs». Experimental Dermatology, vol. 9, no. 3, pp. 165-169.
- Pavicic T., Gauglitz G.G., Lersch P., Schwach-Abdellaoui K., Malle B., Korting H.C., Farwick M. (2011). «Efficacy of cream-based novel formulations of hyaluronic acid of different molecular weights in anti-wrinkle treatment». Journal of Drugs in Dermatology, vol. 10, no. 9, pp. 990-1000.
- Essendoubi M., Gobinet C., Reynaud R., Angiboust J.F., Manfait M., Piot O. (2016). «Human skin penetration of hyaluronic acid of different molecular weights as probed by Raman spectroscopy». Skin Research and Technology, vol. 22, no. 1, pp. 55-62.
- Skibska A., Perlikowska R. (2021). «Signal Peptides - Promising Ingredients in Cosmetics». Current Protein & Peptide Science, vol. 22, no. 10, pp. 716-728.
- de Miranda R.B., Weimer P., Rossi R.C. (2021). «Effects of hydrolyzed collagen supplementation on skin aging: a systematic review and meta-analysis». International Journal of Dermatology, vol. 60, no. 12, pp. 1449-1461.
- Regulation (EC) No 1223/2009 of the European Parliament and of the Council on cosmetic products.
- Commission Regulation (EU) No 655/2013, establishing common criteria for the justification of claims used in relation to cosmetic products.
On the website: Hyaluronic acid in cosmetics · Collagen in cosmetics · Peptides for the skin · Collagen loss
