Marine Collagen vs. Bovine: What’s Best for Mature Skin?

By a Nutritional Therapist | Essential Nutritionist for Beautiful Silverheads

As a Nutritional Therapist, I take a whole-body approach to skin and joint health — one that respects not just what we eat, but how we age, absorb, and respond to nutrients over time. That’s why, when women ask me which collagen is best for mature skin and joints — marine or bovine — I don’t give a one-size-fits-all answer. Instead, I guide them based on science, bioavailability, and how our bodies evolve after 50.

Let’s break it down.

What Is Collagen, and Why Does It Matter After 50?

Collagen is your skin’s natural scaffolding — it keeps it firm, plump, and elastic. But by the time we hit our 50s, collagen production slows significantly. Wrinkles deepen, skin loses its bounce, and joints may start to ache.

That’s where collagen supplements come in. They provide the building blocks (specifically, amino acids like glycine, proline, and hydroxyproline) to support your body’s collagen production.

But not all collagen is created equal, especially when you consider how the body absorbs and uses it in later life.

Marine Collagen: The Skin-First Solution

Marine collagen is derived from fish skin and scales and is almost exclusively Type I collagen — the type that makes up 80–90% of your skin.

Why I Recommend Marine Collagen for Women Over 50:

• Higher Bioavailability: Marine collagen peptides have a smaller molecular size, which means they’re absorbed more easily through the gut lining — a huge advantage if your digestion is slowing with age.
• Skin-Specific: It’s rich in Type I collagen, ideal for targeting fine lines, hydration, and elasticity, joints (ligaments, mobility).
• Gentler on the System: In my experience, marine collagen is often better tolerated by individuals with sensitive stomachs or those with sluggish digestion.
• Sustainable Options Exist: Ethically sourced marine collagen, like the one we use, is both eco-conscious and nutrient-dense.

Bovine Collagen: A Broader Blend

Bovine (or cow-derived) collagen typically contains Type I and Type III collagen, which supports not only skin but also muscles, bones, and gut lining.

It can be effective, especially in younger users or those seeking general joint support, but:

• Larger molecules may be harder to absorb in women with decreased digestive efficiency.
• It often has a stronger taste and odour
• Quality can vary depending on the animal’s diet and farming standards.
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⚕️ My Nutritional Therapist Verdict:

While both sources have benefits, for mature skin, I consistently see better results — and better tolerance — with marine collagen peptides.

If your main goals are:

• Softer, more elastic skin
• Boosted hydration
• Healthier nails and hair
• Graceful aging support

…then marine collagen is likely your best ally.

The Added Advantage: Formulas That Go Beyond Collagen

I always look for collagen supplements that don’t just stop at collagen.

Look for additions like:

• Hyaluronic acid for skin moisture
• Vitamin C to support collagen synthesis
• Natural iodine (like from PureSea® seaweed) to support metabolism and thyroid, especially important post-menopause.

Beauty Begins Inside — and It Lasts with the Right Collagen

Choosing a collagen supplement in your 50s or 60s isn’t about following trends — it’s about nourishing your skin from within, with ingredients that your body can use.

As a Nutritional Therapist, I choose marine collagen for its elegance, efficiency, and skin-specific benefits — and I’ve seen it help many of my Silverhead clients feel more radiant, confident, and at home in their skin.

Curious about how our marine collagen formula can support your skin journey? 

Flexible Buying Options

• One-off purchase: £35 + Free UK delivery
• 3 Months supply (save £35): £72 +FREE Delivery

A Note on Iodine & Fish Sensitivities

I always encourage informed choices, especially when it comes to supplements.

Your health is personal, and your supplement should be too. If you’re unsure, speak to a qualified practitioner before starting a new routine. You are more than welcome to reach out for a 15-minute FREE consultation with me, Essential Nutritionist