Nobody wants to get old, but alongside death and taxes, it’s an inescapable fact of life. What we can avoid, however, are the effects that aging has on our skin and joints. Ageing is directly associated with measurable changes in skin structure, hydration, and elasticity, and these changes are largely driven by alterations in three key components of the extracellular matrix: collagen, elastin, and hyaluronic acid.

While it’s easy to write off hyperbolic claims from skincare brands around these compounds, there is a growing body of research supporting the role these compounds play in maintaining skin integrity and joint function. Find out everything you need to know about this trio of skin-firming superstars in this detailed guide from the team at Supplement Needs…

What are Collagen, Elastin and Hyaluronic Acid?

When dealing with the body’s largest organ (the skin), it’s easy to overlook that the thing that keeps our insides in is, itself, made up of proteins, lipids, and polysaccharides, and requires more maintenance than just the occasional application of moisturiser. 

Between the three of them, Collagen, Elastin and Hyaluronic Acid are some of the main ingredients required for healthy skin and joints - but each of them also serve additional purposes in the body.

What is Collagen?

Whilst its time in the limelight is often as an injectable filler to temporarily reduce the appearance of wrinkles, Collagen actually makes up between 70% and 80% of the dry weight of the skin - and is also responsible for its mechanical and structural integrity¹. 

Made of amino acids in a triple-helix structure, Collagen is the most abundant protein in the body and, though produced naturally, production decreases with age and due to factors such as reduced fibroblast activity, oxidative stress, and environmental exposure (UV damage), contributing to wrinkles, reduced elasticity, and slower tissue repair.

In simple terms: collagen acts as the structural “scaffolding” keeping skin firm, dense, and resilient.

What is Elastin?

Whilst Elastin is far less present in the skin, it also plays an important role in skin elasticity - and accounts for between 2% and 4% of the extracellular matrix². 

Another protein, Elastin helps to give the necessary stretch and flexibility to the lungs, bladder, blood vessels, and skin - allowing them to deal with the necessary expansion and contraction required for the proper day-to-day function of your body.

Unlike Collagen, Elastin is primarily produced during early development (in utero and during infancy), with minimal regeneration in adulthood. Elastin fibres degrade due to enzymatic breakdown, oxidative stress, and due to environmental factors such as UV exposure and smoking.

In simple terms: elastin allows your skin to “bounce back” after being stretched.

What is Hyaluronic Acid?

Another component of the extracellular matrix, and first among the glycosaminoglycans, hyaluronic acid is a sugar found predominately in the skin, joints and eyes (and is, famously, capable of retaining up to 1000 times its own weight in water³). 

In addition to hydration, Hyaluronic Acid is also involved in wound healing, cellular signalling, and in the maintenance of the extracellular environment required for optimal tissue function.

In simple terms: hyaluronic acid acts as a “moisture reservoir,” helping skin to stay hydrated and visibly plump.

What do Collagen, Elastin and Hyaluronic Acid do for the skin?

Although each compound has a distinct role, together they form the foundation of skin structure and appearance. In short, and to simplify:

• Collagen provides structural strength.

• Elastin provides elasticity and flexibility.

• Hyaluronic acid maintains hydration and volume.

Each ‘ingredient’ interacts within the extracellular matrix to regulate skin firmness, resilience, and moisture balance.

What Collagen does for the skin

Produced by and, in turn, helping to maintain the structure of fibroblasts (versatile mesenchymal cells which produce extracellular matrix components) in the middle layer of skin, Collagen is one of the most important proteins in the body - helping with the production of new cells, aiding wound healing and the replacement of dead skin cells; it also contributes to the structure, strength and elasticity of skin⁴.

What Elastin does for the skin

As you could probably infer from the name, Elastin is primarily responsible for the elasticity of various tissues in the body - in the skin, the presence of Elastin allows for the stretch and shrinking of the skin when you perform the ‘pinch test’ (we’ll cover this further in the diagnosis section). 

Made of short, repeated chains of several amino-acids (namely proline, glycine, desmosine and isodesmosine), Elastin is primarily produced in utero and during infancy, and degrades as we age - degradation which is accelerated by sun damage, smoking and poor diet. 

In addition to giving tissues their elasticity, elastin also has short term water retention properties⁵.

What Hyaluronic Acid does for the skin

In the skin, Hyaluronic Acid is a powerful ‘humectant’ (a hygroscopic substance used to retain moisture) which helps the polymer to act as a ‘plumping’ agent in skin (effectively a moisture magnet that serves to give skin a plumper appearance) as well as performing a role in wound healing, pore-size reduction⁶, and in the flexibility of tissues (including skin). 

An incredibly versatile molecule used in the treatment of many related conditions, Hyaluronic Acid is also one of the most common topical and subdermally injected treatments for fine lines and wrinkles.

Marine vs Bovine Collagen: why the source matters

As we often say at Supplement Needs not all supplements are created equal; and, that’s certainly the case when it comes to Collagen supplements.

One of the most important distinctions to be drawn between Collagen supplements is the source from which the Collagen is derived. The two most common sources are bovine (cow-derived) and marine (fish-derived) - and understanding the difference between the two can help you select the very best Collagen supplement.

Bovine Collagen: what you need to know

Bovine Collagen is derived from cattle hides and connective tissue. You may not realise it, but it’s also essentially what “Beef Protein Isolate” products are - a fact that many consumers overlook. 

Whilst marketed as a protein supplement, beef protein isolate is predominantly Collagen-derived, meaning it is not a complete protein source, and its larger molecular weight compared to marine collagen means it is absorbed less efficiently - a meaningful limitation when skin and joint health are the primary goal.

Marine Collagen: superior bioavailability and skin specificity

Marine Collagen is derived from fish skin and scales, and it offers two significant advantages over bovine Collagen for skin health applications:

• Lower molecular weight for better absorption: marine Collagen peptides have a lower molecular weight than those derived from bovine or porcine sources, which means they are absorbed more efficiently and utilised more effectively by the body.
  

• Rich in Type 1 Collagen: marine Collagen is also particularly rich in Type 1 collagen - the most abundant collagen type in the human body, and a key component of skin, bones, and connective tissues. This makes it especially effective for supporting skin elasticity, hydration, and overall dermal health.

In simple terms: marine Collagen is a more targeted and more efficiently absorbed option for skin and joint health than bovine alternatives.

Standard tripeptides vs. standard Collagen Tripeptides: what’s the difference? 

Even within marine Collagen, not all products are equivalent.

There is an important distinction between standard marine Collagen peptides - such as the 2.5g of marine Collagen peptides found in the Supplement Needs Joint Stack - and Collagen tripeptides, as used in Supplement Needs Beauty Essence. 

Understanding this difference is central to appreciating why formulation quality matters.

Standard marine Collagen peptides

Standard collagen peptides are produced by breaking raw Collagen (which has a molecular weight of around 300,000 Daltons), down through a hydrolysation process to produce shorter peptide chains - typically to around 2,000 Daltons. 

Whilst this is a significant improvement in terms of absorption over intact Collagen, the exact peptide size is often undisclosed, and the fragments can vary considerably in length and composition.

Collagen tripeptides: the next level

Collagen tripeptides take the hydrolysation process significantly further. 

As the name suggests, a tripeptide consists of just three amino acids bonded together - most commonly the sequence Glycine-Proline-Hydroxyproline (Gly-Pro-Hyp) - with a molecular weight as low as 300 Daltons. 

This has several meaningful implications:

• Faster, direct absorption: peptides below 500 Daltons can be absorbed directly through the digestive tract without requiring further breakdown. This means a higher percentage of ingested tripeptides are absorbed intact, with studies suggesting measurable increases in circulation within 30 minutes of consumption⁷⁸.
  

• Superior bioavailability: studies demonstrate that Collagen tripeptides exhibit superior bioavailability and bioactivity compared to larger peptide chains - not only are they absorbed more rapidly, but a greater proportion reaches the target tissues intact⁹¹⁰.
  

• Cell-signaling properties: perhaps most significantly, Collagen tripeptides are postulated to act as small molecule signals, stimulating fibroblasts to produce more of the body’s own Collagen. This mechanism - akin to the emerging peptide-based skincare trend - means tripeptides don’t just replenish Collagen passively; they may actively encourage endogenous synthesis. Research has demonstrated that Collagen tripeptide supplementation led to measurable improvements in skin hydration and elasticity in a randomised controlled trial, with additional evidence supporting benefits against skin photo-aging¹¹.
  

• Bone health benefits: a 2025 meta-analysis further supports the broad connective tissue benefits of Collagen tripeptide supplementation, including positive outcomes for bone health - reinforcing the systematic utility of this format beyond skin alone¹².

In simple terms: Collagen tripeptides are smaller, faster-absorbing, more bioavailable, and more bioactive than standard Collagen peptides - making them the superior choice when skin and connective tissue health is the goal.

What can Collagen, Elastin and Hyaluronic Acid deficiencies lead to?

Rather than true “deficiencies,” most individuals experience age-related declines in Collagen, Elastin and Hyaluronic Acid. However, because of their presence and role in the function of several vital tissue functions, a decline in any of these three compounds can lead to everything from pain to reduced mobility. 

While, for the purposes of this article, the main signs of a decline in Collagen, Elastin or Hyaluronic Acid would be atypical inelasticity of the skin, a lack of tissue flexibility can lead to problems with the bladder, lungs, eyes and more.

Your body relies on these three compounds for anything that requires the expansion and contraction of a tissue - from your blood vessels to your lungs and your diaphragm - and a deficiency can result in pain and other related issues. 

Declines are driven by:

• Reduced cellular production (e.g. fibroblast activity).

• Increased oxidative stress.

• Chronic low-grade inflammation.

• Environmental factors such as UV exposure and pollution.

Declines can lead to:

• Reduced skin firmness and elasticity.

• Increased fine lines and wrinkles.

• Slower wound healing.

• Joint stiffness and reduced mobility.

It should be noted that actual deficiencies are rare, but - as with many other compounds taken as supplements - improving the body’s levels of Collagen, Elastin and Hyaluronic Acid can lead to health benefits, in this case including: firmer skin, better joint mobility, reduced pain, better wound healing, improved resistance to sun damage and many more.

Do I have a Collagen, Elastin or Hyaluronic Acid deficiency? How can I check?

One of the principal methods of teaching about aging during the average biology curriculum, the pinch test is a quick and easy way to check on your levels of Collagen, Elastin and Hyaluronic Acid. 

The following, from The University of Twente, lays out the test:

A simple way to get a rough idea of your skin’s elasticity is the pinch test. Gently pinch the skin on the back of your hand, lift it slightly, hold for two seconds and then let go. If the skin has high elasticity, it returns to its normal position almost immediately, within one or two seconds. If it takes longer and stays raised for a short time, the elasticity is lower.¹³

As mentioned previously, this is mostly a ‘quick and easy’ kind of test, and shouldn’t be considered a form of diagnosis. What you can take from it is that, if your skin rebounds significantly more slowly than should be expected for your age cohort, it’s worthwhile stocking up on some premium supplements.

Are declines in Collagen, Elastin or Hyaluronic Acid clinically diagnosed?

Deficiencies of Collagen, Elastin and Hyaluronic Acid are very seldom diagnosed via blood test or other laboratory testing - instead they tend to be inferred based on the presentation of symptoms.

Signs of Collagen deficiency

Some signs of Collagen deficiency to look out for include: 

• Pronounced skin changes: sagging skin, loss of firmness, and a "crepey" skin texture.
  

• Joint and muscle issues: chronic joint pain, stiffness (especially after rest), reduced flexibility, and reduced muscle mass.
  

• Hair and nail fragility: thinning, dry, or brittle hair; weak, peeling, or slow growing nails.
  

• Slow wound healing: cuts, bruises, and injuries taking noticeably longer to heal.
  

• Digestive issues: potential "leaky gut" symptoms (collagen supports the lining of the digestive tract as well as other organs). 

Signs of Elastin deficiency

If you’re concerned about a potential Elastin deficiency, then look for the following symptoms: 

• Loss of skin "bounce": skin remains stretched or "tented" for a moment when pinched, rather than snapping back.
  

• Loose, sagging skin: particularly in areas such as the neck and jowls.

Signs of hyaluronic acid deficiency

Finally, if a Hyaluronic Acid deficiency is a particular concern, then look for:

• Severe dryness and tightness: skin feels dehydrated, tight, or uncomfortable, even with moisturiser use.
  

• Loss of plumpness: flat, dull, or sunken appearance (particularly in the cheeks and under-eye areas).
  

• Surface fine lines: dehydration lines appear (which may look better after use of a hydrating mask but return later).
  

• Increased sensitivity: the skin may be more reactive to products and environmental changes.

Should any of these symptoms become evident, we’d urge you to contact your doctor in the first instance. It may be that, in the short to medium term, you may also potentially benefit from dietary supplementation.

How can I support optimal Collagen, Elastin and Hyaluronic Acid levels?

As with most compounds produced by your body, the answer here is fundamental in nature - your body performs best when it is well rested, well fed, well cared for and exercised regularly. 

For the most part, your body will produce sufficient quantities of these compounds for most of your life (except for Elastin, as mentioned earlier), but age and modern life can result in suboptimal production, meaning that you can end up with a deficiency.

Key considerations for supporting production include:

• Adequate nutrition (particularly amino acids and micronutrients).

• Regular physical activity.

• Sleep and recovery.

• Minimising chronic inflammation and oxidative stress.

However, in addition to these foundational factors, targeted supplementation may help support these pathways (particularly during age-related decline).

The role of supplementation

Tackling a decline in Collagen, Elastin or Hyaluronic Acid (provided there are no secondary, underlying causes) can be as simple as adding a single product to your daily supplement routine, and oral supplementation has been increasingly studied as a method of and positively correlated with supporting extracellular matrix integrity.

For example:

• Hydrolysed Collagen peptides have been shown (in meta-analyses - effectively studies of groups of studies) to improve skin hydration and elasticity over an 8 to 12 week period
  

• Hyaluronic Acid supplementation has been positively correlated with improved skin moisture and joint lubrication
  

• Supporting compounds have been found to influence fibroblast activity and extracellular matrix turnover

Whilst it’s important to note that these effects are typically gradual, and depend on consistent use, here at Supplement Needs, we offer two products which can contribute to optimal levels of Collagen, Elastin and Hyaluronic Acid:

• Beauty Essence Collagen Tripeptide with Elastin and Hyaluronic Acid - 150ml - formulated by Dr Dean St Mart PhD to nurture your skin from within with Collagen tripeptide, Hyaluronic Acid, and Elastin.
  

• Supplement Needs Joint Stack - 28 servings - containing (among many other ingredients) marine Collagen peptides, and Hyaluronic Acid for joint health and improved mobility.

We’ll cover both of these products in more detail at the end of this article. 

Collagen, Elastin or Hyaluronic Acid FAQs

We appreciate we’ve covered a lot of ground in this article, so the following serves as a quick review of some key facts, along with some additional information we haven’t covered.

What are the primary functions of Collagen, Elastin, and Hyaluronic Acid in the skin?

Collagen provides structural integrity (70-80% of skin weight), Elastin allows for stretch and flexibility, and Hyaluronic Acid acts as a humectant to retain moisture and "plump" the skin.

How can I check my skin's elasticity at home? 

You can perform the "pinch test" by gently pinching the skin on the back of your hand for two seconds; high elasticity skin returns to its normal position almost immediately.

What are the common signs of a collagen deficiency? 

Visible signs include sagging or "crepey" skin texture, joint stiffness, brittle hair and nails, and noticeably slower wound healing.

How can I improve my levels of these compounds? 

Beyond healthy lifestyle habits, you can use targeted supplements such as Supplement Needs Beauty Essence Collagen Tripeptide or specific joint stacks containing marine Collagen and Hyaluronic Acid.

How long does it take for oral collagen supplements to work? 

Clinical trials suggest consistent use of oral hydrolyzed Collagen for at least 8 to 12 weeks is required to see improvements in skin hydration and elasticity¹⁴. Improvements can last up to four weeks after cessation.

Are there whole foods that support healthier skin? 

Meta-analyses suggest specific whole foods are consistently associated with more youthful looking skin, including polyphenol sources like green tea, cocoa, berries, and citrus extracts; and omega-rich fats from fatty fish, flaxseed, and avocado.

Is collagen a complete protein for muscle-building? 

Collagen is not a complete protein source. While it helps with skin and joint health, it is not recommended as a replacement for other protein powders (whey or plant proteins for example) for goals like muscle building, recovery, or fat loss.

Build the ultimate skin stack with Supplement Needs today

If you want healthy, youthful, firm, and plump skin, then - as you’ll have gathered from reading this article - supplementation can be beneficial. 

And, there’s no better place to look for those supplements than here at Supplement Needs. 

Supplement Needs Beauty Essence Collagen Tripeptide

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