How to Increase Collagen in Your Skin: What Actually Works?

A nurse expert guide to protecting, supporting and stimulating skin collagen — separating useful evidence from marketing claims.

Author: Elizabeth Rimmer, Clinical Director & Independent Nurse Prescriber

Collagen is one of the words most heavily used in skincare and aesthetic medicine. Creams promise to “restore” it, supplements claim to “rebuild” it, and treatments are increasingly described as collagen stimulators.

But how much of this — including the endless online advice on how to boost collagen fast — is actually supported by evidence?

The answer is more nuanced than simply finding the product or treatment that “boosts collagen” the most.

Collagen is a structural protein that helps give skin strength and support. Elastin performs a different role, helping skin stretch and return towards its original shape. Both change as we age, while ultraviolet exposure, smoking and other environmental factors can accelerate visible skin ageing.

The useful way to think about collagen is therefore not as one problem with one solution, but in four different ways:

1. Protect the collagen you already have
2. Support the body’s normal collagen production
3. Stimulate or remodel collagen within the skin
4. Use injectable biostimulation where appropriate

Those approaches are not interchangeable, and they do not all have the same quality of evidence.

What is collagen — and why does it decline?

Collagen is a major component of the skin’s extracellular matrix: the structural framework surrounding cells in the dermis. Fibroblasts are among the cells responsible for producing collagen, elastin and other components of this matrix.

With age, the balance between collagen production and breakdown changes. Skin can gradually become thinner, less elastic and less resilient, while fine lines, laxity and changes in facial structure become more apparent.

Collagen and elastin are not the same thing

An easy way to picture the difference is to think of collagen as providing the supporting framework of a trampoline and elastin as contributing to its springiness.

They work together, but a treatment affecting hydration, elastin or skin texture should not automatically be described as “rebuilding collagen”.

That distinction matters because much of the marketing around skin ageing groups very different biological effects together.

What accelerates collagen loss?

Chronological ageing is unavoidable, but some external factors matter considerably.

Ultraviolet exposure is one of the most important. UV radiation contributes to photoageing and degradation of the dermal extracellular matrix. Importantly, prevention is not merely theoretical: a randomised controlled trial found that regular sunscreen use reduced signs of skin photoageing compared with discretionary use. At LPA we always advise SPF usage every day to protect skin health and prevent wrinkles in the skin.

Smoking is another well-established contributor. Research links tobacco smoke with increased matrix metalloproteinase activity, impaired collagen production and accelerated breakdown of dermal connective tissue. In other words, smoking means your skin loses turgor more quickly.

Nutrition, sleep, general health and other lifestyle factors also influence skin physiology, but it is worth keeping these claims proportionate. Good health habits support healthy skin and are essential for maintaining skin elasticity in that they provide the building blocks for treatments promoting collagen production.

The four ways to influence skin collagen

Before comparing products and procedures, it helps to separate four different objectives.

1. Protect

Reduce avoidable collagen degradation — particularly from UV exposure and smoking. Aging is inevitable, aging skin can be slowed.

2. Support

Provide the nutritional environment and skincare ingredients involved in normal collagen synthesis and skin function. A good diet provides the body with the right nutrition, the human skin is the last organ to benefit from this, but it should not be overlooked. Medical grade skin creams such as Tretinoin have been developed and proven to help support the skin as it ages. Adequate nutrition, alongside good skincare, also supports the skin barrier and skin elasticity over time.

3. Stimulate or remodel

Use treatments such as microneedling with or without Exosomes to create controlled biological responses within the skin. The creation of tiny channels within the skin result in production of collagen.

4. Injectable biostimulation

Use injectable products whose intended effect includes gradual tissue remodelling or stimulation rather than simply adding immediate volume.

A person may benefit from more than one category. Equally, somebody with healthy skin and relatively early concerns may have little reason to start with an injectable treatment.

Protecting the collagen you already have

Daily sun protection

If the aim is healthier-looking skin over the long term, protecting existing collagen is difficult to ignore. (See our guide to understanding SPF for more on how sun protection factor actually works.)

A broad-spectrum sunscreen helps reduce UV-related photoageing. This is not a treatment for existing volume loss and will not suddenly make the face look younger, but it reduces one of the major avoidable sources of cumulative skin damage.

For most people, this makes sun protection a more rational starting point than buying another product marketed as a collagen booster.

Smoking

Stopping smoking has benefits far beyond appearance, but from a skin perspective the evidence linking tobacco exposure with premature ageing and altered collagen metabolism is well established.

This is a good example of why “boosting collagen” should not begin with treatments alone. Trying to stimulate collagen while continuing to expose skin to factors that accelerate its degradation misses part of the picture.

Supporting normal collagen synthesis: nutrition

Collagen synthesis requires amino acids, while nutrients including vitamin C play important biochemical roles in the process.

That does not mean there is a single “collagen food”.

A balanced diet supplying adequate protein, fruit and vegetables is more defensible than attempting to eat large quantities of one supposed collagen-boosting ingredient.

Protein provides amino acids including glycine and proline that can be used as building blocks. Vitamin C is an essential cofactor involved in collagen synthesis, which is why adequate vitamin C intake matters.

However, eating citrus fruit or bone broth does not instruct the body to send newly formed collagen specifically to facial skin.

That is an important distinction between supporting normal physiology and clinically stimulating dermal remodelling.

Do collagen supplements actually work?

This is an area where the answer has become more interesting.

Several earlier systematic reviews and clinical trials reported improvements in measurements such as skin hydration or elasticity after oral hydrolysed collagen supplementation.

But a 2025 meta-analysis examining 23 randomised controlled trials found something important. Pooled results initially suggested benefits for hydration, elasticity and wrinkles. However, those benefits were not confirmed in the higher-quality studies. Nor were they confirmed in studies without pharmaceutical-company funding.

That does not prove that every collagen supplement is ineffective.

It does mean the evidence is mixed, and stronger claims such as “oral collagen rebuilds your skin” go beyond what we can currently say with confidence.

At LPA, we would therefore place supplements in the supportive category rather than treating them as equivalent to a proven topical medicine or controlled in-clinic procedure. More specifically we endorse Totally Derma as this hydrolyzed collagen supplement is rooted in clinical trials and has benefits beyond those found in the skin.

Skincare ingredients with meaningful evidence

Retinoids

Retinoids are among the better-studied topical approaches to photoaged skin.

Over-the-counter retinol is a milder, non-prescription form of vitamin A that some people use as a starting point, though its evidence base and potency are not equivalent to prescription tretinoin.

Tretinoin in particular has randomised-trial evidence showing improvements in photoageing and effects consistent with new collagen formation and dermal remodelling. A systematic review of randomised controlled trials supports its role in treating photoaged skin.

This does not mean stronger is always better. Retinoids can cause irritation, dryness and peeling, and prescription retinoids require appropriate clinical consideration.

Results are also gradual. Think in terms of sustained use over months rather than days. This type of skincare stimulates skin cells and requires medical supervision to ensure you choose the correct product, dose and frequency.

Vitamin C

Vitamin C has biological relevance to collagen synthesis and antioxidant defence, but formulation matters enormously when it is applied topically.

A systematic review found evidence of improvement in features including wrinkling and skin smoothness, while also highlighting the small number of studies and the need for more research into optimal formulations and concentrations.

So topical vitamin C is reasonable to include in an evidence-conscious skincare routine, but “vitamin C builds collagen” is too simplistic a description.

Professional treatments that stimulate or remodel collagen

Microneedling

Microneedling — sometimes called collagen induction therapy — creates controlled microscopic injuries in the skin, activating wound-healing and remodelling processes.

It is used for concerns including texture, photoageing, fine lines and some types of scarring.

Microneedling normally makes more sense as a course or treatment programme than as a one-off treatment. Its combination with Exosomes provides a 2 for 1 stimulation of the body’s natural collagen production.

Energy-based treatments form a very broad category.

LED phototherapy

Photobiomodulation is another area where wavelength, energy delivery and device specification matter.

LED is a pain free treatment suitable for all skin types. The light beams work by providing an energy source for fibroblasts to stimulate collagen production.

Sculptra: poly-L-lactic acid

Sculptra contains poly-L-lactic acid (PLLA).

Rather than behaving simply as a conventional volumising dermal filler, PLLA produces a gradual tissue response associated with collagen formation and revolumisation.

Sculptra is fast becoming the go-to treatment for natural looking skin quality improvement and revolumisation. Its popularity amongst celebrities stems from its gradual onset and long lasting results, building the skin’s collagen over time.

Profhilo

Profhilo is based on hybrid complexes of high- and low-molecular-weight hyaluronic acid.

Its mechanism is different from PLLA. Known in the media as the ‘injectable moisturiser’. Profhilo is a ‘no brainer’ for those looking for glowing skin. The radiant effect makes Profhilo the perfect choice for a pre event glow up, with an added benefit of increasing collagen content.

Polynucleotides

Polynucleotides have become increasingly popular for improving skin quality.

Polynucleotides have the flexibility of being suitable for use in areas typically avoided with injectables. Polynucleotides penetrate the skin and result in firmer, healthier looking skin. They can be used to target under the eyes and around the mouth where the skin is thin and unsuitable for many other treatment options.

Comparing the main approaches

Approach	Main role	Evidence position	Downtime	What it is best at	Main limitation
Broad-spectrum SPF	Protect	Strong for reducing photoageing	None	Reducing avoidable future UV damage	Does not restore existing volume loss
Balanced diet	Support	Strong biological rationale; difficult to isolate cosmetically	None	Supporting normal skin physiology	Not a targeted facial collagen treatment
Oral collagen supplements	Support	Mixed	None	Convenient supportive option	Higher-quality independent evidence is unconvincing
Retinoids	Stimulate/remodel	Good for photoageing, especially tretinoin	Possible irritation	Fine lines, texture and long-term photoageing management	Tolerance and suitability
Topical vitamin C	Support/protect	Moderate	Usually none	Antioxidant skincare and photodamage	Formulation and evidence vary
Microneedling	Stimulate/remodel	Moderate/encouraging	Usually short	Texture, fine lines, some scarring	Often requires a course
RF / laser	Stimulate/remodel	Device-specific evidence	Variable	Texture, laxity and remodelling depending on device	Technology/operator/risk vary
Profhilo	Bio-remodelling	Developing clinical evidence	Injectable downtime	Hydration, elasticity and skin quality	Not equivalent to structural volumisation
Sculptra	Injectable biostimulation	RCT evidence plus limitations in wider literature	Injectable downtime	Gradual structural/tissue change in suitable patients	Results are gradual; clinical assessment essential
Polynucleotides	Regenerative/skin-quality treatment	Emerging	Injectable downtime	Potential skin-quality applications	Smaller and less mature evidence base

How do you choose the right approach?

The useful question is often not:

“What is the best collagen treatment?”

It is:

“What exactly am I trying to improve?”

For everybody

Anyone interested in any aspect of skin health and/or age improvement, start with UV protection, medical grade skin care, avoid smoking and aim for a healthy balance diet.

If your concern is early fine lines, texture or photodamage

A retinoid-based skincare strategy, potentially combined with treatments such as microneedling with Exosomes may be more proportionate than moving straight to injectable biostimulation. Microneedling with exosomes will improve skin texture for all.

If your priority is skin quality and hydration

Treatments intended primarily for skin quality — rather than structural volume replacement — may be more appropriate.

If you are noticing structural ageing or progressive volume change

This is where consultation becomes more important. Loss of facial support, fat-compartment change, skin laxity and collagen decline are different processes. A collagen-stimulating injectable may sometimes form part of a treatment plan, but it will not be the correct answer for everyone. Sculptra has the benefit of addressing volume loss and also impacts the skin itself.

How quickly can you increase collagen?

This is one area where marketing frequently gets ahead of biology.

There is no credible overnight collagen treatment.

A moisturiser can improve hydration quickly. Certain procedures can produce transient swelling or immediate visual changes. Dermal filler can create immediate volume.

But biological collagen production and tissue remodelling are gradual processes.

Retinoids are generally assessed over months. Microneedling-induced remodelling continues after treatment. PLLA is specifically intended to produce gradual change rather than an instant “filled” appearance.

If something promises to regenerate substantial quantities of facial collagen in a few days, scepticism is appropriate.

What are the signs that collagen support is working?

Changes associated with collagen remodelling are usually gradual rather than dramatic. Depending on the approach being used, people may notice improvements in skin texture, smoothness, elasticity or firmness over time.

With treatments intended to stimulate remodelling, changes generally develop over weeks to months rather than overnight.

It is worth distinguishing this from temporary hydration, transient swelling or an immediate cosmetic change, none of which is the same as new collagen formation.

A clinician’s perspective

“When I assess somebody concerned about collagen loss, I don’t start by asking which collagen treatment they want. I start by looking at what is actually changing — skin quality, texture, laxity, facial volume or a combination of these.

One of the most common misconceptions is that all ‘collagen treatments’ are doing essentially the same thing. They absolutely aren’t. Good skincare, microneedling, Profhilo, polynucleotides and Sculptra have very different roles and different levels of evidence. They are all excellent options with variations in the outcomes.

In many patients the most sensible approach is also a combination: protect the skin first, establish appropriate skincare, and then decide whether an in-clinic treatment adds something meaningful. More treatment is not automatically better treatment.”

Elizabeth Rimmer Clinical Director & Independent Nurse Prescriber London Professional Aesthetics

Frequently asked questions

Can lost collagen be rebuilt?

Skin can produce new collagen and undergo remodelling, but “rebuild” can give the impression that skin can simply be returned to its younger state. That is unrealistic.

The aim is usually to reduce avoidable degradation and, where appropriate, encourage biological processes that improve aspects of dermal structure and skin quality.

What is the best natural way to support collagen?

Sun protection, not smoking, adequate nutrition and sensible skincare are a strong foundation. An evidence based collagen supplement can add to that foundation and have benefits beyond the skin.

Which skincare ingredient has the strongest evidence?

Among topical treatments for photoageing, tretinoin has one of the strongest clinical evidence bases. It is not suitable for everyone and can cause irritation, so treatment choice should be individualised and supervised. This cream impacts the skin within a few weeks of use and can induce side effects in addition to its benefits.

Are collagen supplements worth taking?

Always opt for a product with good clinical evidence behind it.

Is Sculptra the same as dermal filler?

No. Although both are injectable treatments, conventional hyaluronic-acid filler primarily creates physical volume through the injected material. Sculptra contains PLLA and is used for its gradual biostimulatory tissue response. Sculptra has been around for many years but has seen a resurgence in popularity owing to its natural looking results. its long lasting effects and its double whammy results – improving volume loss and skin integrity.

Are Profhilo, polynucleotides and Sculptra basically the same?

No.

They use different materials, have different proposed biological mechanisms and different evidence bases. Grouping them all under “collagen stimulators” hides clinically useful distinctions.

What treatment increases collagen the fastest?

That depends on what is meant by “results”. Immediate visual change is not the same as new collagen production. There are treatments that provide more instant visible results than others which is why a consultation is essential to match the right treatment to your goals.

Biological remodelling takes time. A consultation is usually more useful than choosing a treatment according to which one promises the fastest collagen increase.

So, what actually works?

There is no single best way to increase collagen in the skin.

A more useful hierarchy is:

Protect what you have. Daily sun protection and avoiding smoking address major preventable sources of collagen degradation in order to preserve collagen.

Support normal biology. Adequate nutrition and carefully chosen skincare provide a sensible foundation. The foods in your diet feed your skin and hair.

Stimulate or remodel when appropriate. Retinoids, microneedling and exosomes will affect skin elasticity differently in different people.

Use injectable biostimulation selectively. Sculptra, Profhilo and polynucleotides each occupy different positions in aesthetic medicine and should not be treated as interchangeable solutions. All of these support collagen production and all have different ways to help keep the skin looking fresh. Your practitioner can help you choose or prioritise the options that will benefit you most.

Most importantly, the right choice depends on whether the real concern is prevention, skin quality, texture, laxity, structural ageing or volume loss, or a combination of those.

If you are unsure which category your concerns fall into, a consultation can help distinguish what is likely to be useful — and what probably is not.

If you’re based in London and considering a collagen-stimulating treatment, an in-clinic assessment can help establish whether your main concern is skin quality, texture, laxity, structural ageing or volume loss — and whether options such as microneedling, Profhilo, polynucleotides or Sculptra are appropriate, or whether skincare and prevention are the better starting point.

Book an in-clinic consultation

Author

Elizabeth Rimmer Clinical Director & Independent Nurse Prescriber London Professional Aesthetics

Clinically reviewed: 4 September 2026 Last updated: 4 September 2026