Do Collagen Supplements Work?

Collagen supplements are often promoted for healthier skin, stronger joints and healthy ageing, but do collagen supplements work like they’re meant to?

A recent scientific review, which analysed 113 clinical studies involving almost 8,000 participants suggests collagen supplementation may support skin hydration, elasticity and joint health, although the evidence is stronger in some areas than others.

What Is Collagen?

Collagen is the most abundant protein in the body and acts as one of the main structural building blocks for:

• skin
• joints
• bones
• tendons
• ligaments
• connective tissue

Our natural collagen production gradually declines with age. This process can also be influenced and accelerated by factors such as:

• UV exposure
• smoking
• stress
• lack of sleep
• poor diet
• hormonal changes, including menopause

As collagen levels decline, skin can become less firm and hydrated over time, while joints and connective tissues may also become less resilient.

What Did the Study Look At?

A 2026 published umbrella review in the Aesthetic Surgery Journal Open Forum examined evidence from multiple meta-analyses and randomised controlled trials. These are one of the strongest ways to assess overall scientific evidence.

Researchers analysed 113 studies involving nearly 8,000 participants to investigate the effects of collagen supplementation on:

• skin hydration and elasticity
• osteoarthritis and joint discomfort
• body composition
• sports performance
• cardiometabolic health

The researchers also evaluated the overall quality and strength of the evidence from each study.

What the Research Suggests Collagen Supplements May Help With

Skin Hydration and Elasticity

One of the clearest findings from the review was the potential benefit of collagen supplementation for skin health.

Across multiple studies, collagen supplements were associated with improvements in:

• skin hydration
• elasticity
• overall skin texture

The improvements were generally seen after consistent use over several weeks or months rather than immediately after taking.

This doesn’t mean collagen supplements can reverse ageing, but the evidence suggests they may support skin structure and moisture levels, helping to improve the overall skin appearance.

Joint Health and Osteoarthritis Symptoms

The review also found encouraging evidence for joint health, particularly in individuals experiencing osteoarthritis symptoms or age-related joint discomfort.

Some studies reported improvements in:

• joint stiffness
• mobility
• overall comfort

Because collagen is a key component of cartilage and connective tissue, researchers concluded that they believe supplementation may help support these structures over time.

It’s important to note that, consistency appears to be a key part of taking a collagen supplement, with benefits typically associated with longer-term supplementation rather than short-term use.

Where the Evidence Is Less Convincing

One of the most important aspects of the review is that it also highlighted areas where evidence remains limited or inconsistent.

The researchers found less convincing evidence for collagen supplementation improving:

• sports performance
• muscle mass
• cardiometabolic health

Currently the data shows that collagen supplements may not deliver all the wide-ranging benefits they are sometimes marketed for.

Study Limitations

Although the overall findings were positive, experts have also noted that many collagen studies are industry-funded, and some independent studies report more modest results.

This doesn’t mean collagen supplements are ineffective, but it does highlight the importance of interpreting research carefully and avoiding exaggerated health claims, and using collagen consistently over intermittently.

The strongest evidence currently supports collagen supplementation as something that may help support skin and joint health as part of a healthy lifestyle, rather than acting as a quick fix.

Are Collagen Supplements Worth Taking?

Current evidence suggests collagen supplements may support:

• skin hydration and elasticity
• joint comfort
• healthy ageing of connective tissue

However, supplements are unlikely to produce dramatic overnight changes, and it is important that they are taken consistently to help with the above/

Lifestyle factors still play a major role in skin and joint health, including:

• adequate protein intake
• sleep quality
• exercise
• stress management
• sun protection
• not smoking
• overall diet quality

Like with everything when it comes to wellness, nutrition and skin health, it isn’t just one single solution and instead it is a range of different areas which all play a role together.

However, it is interest that increasingly research suggests that collagen supplementation may have a genuine role to play in skin and joint health and appearance, particularly when used consistently and alongside healthy lifestyle habits.

Frequently Asked Questions About Collagen Supplements

The Bottom Line

The latest large-scale review of collagen research suggests there is growing evidence that collagen supplementation may benefit skin hydration, elasticity and joint health.

At the same time, the study highlights the importance of evidence-based expectations and avoiding overblown wellness claims.

As research continues, collagen supplements appear to be moving beyond trend status and into a more evidence-supported area of nutrition, particularly when viewed as part of an overall healthy lifestyle.

These products are not intended to diagnose, treat, cure or prevent any disease. If you have a medical condition, or are pregnant or breastfeeding, we recommend consulting your healthcare professional before use.