Marine Collagen vs Bovine Collagen: Which One Should You Take?

If you’re starting (or restarting) your collagen journey, you’ve probably seen both types of collagen mentioned, often with bold claims and plenty of opinions. And when every product promises everything, it’s hard to know what actually matters.

Here’s the simple truth: different types of collagen support the body in different ways. It’s not about chasing trends. It’s about understanding what your body uses, how collagen works, and what kind of support feels right for you.

In this article, we break down the difference between marine and bovine collagen clearly and honestly, so you can choose the best collagen supplements with confidence.

What is marine collagen?

Marine collagen is made from fish skin and scales. It’s widely used in beauty-focused supplements thanks to its strong association with skin structure and appearance.

As we age, our natural collagen levels decline (often from our mid-twenties onwards), which can show up as fine lines, changes in skin texture, and more fragile hair and nails over time.

Because of this, marine collagen is often chosen by those looking to support skin, hair and nails from within, as part of a simple daily routine.

Here at Absolute Collagen, marine collagen has long been at the heart of our formulas, and it’s the key ingredient in our collagen powder and liquid collagen sachets .

What is bovine collagen?

Bovine collagen is sourced from cow hides, bones, and connective tissue. Like marine collagen, it supports the body’s overall collagen levels, including those linked to skin, hair and nail health.

Bovine collagen also contains naturally occurring amino acids that the body uses as building blocks for its own collagen production. That’s why many people include it in their routine alongside marine collagen, rather than instead of it.

In short, bovine collagen supports your body’s foundations, with benefits that overlap closely with marine collagen, particularly when it comes to skin, hair, and nails.

What’s the difference between bovine and marine collagen?

While both support collagen production in your body, there are some important differences between bovine and marine collagen:

Marine Collagen VS Bovine Collagen

Source: Fish skin and scales | Cow hides and bones
Best for: Skin, hair, nails | Skin, bones, muscles
Suitability for pescatarians: Yes | No

Rather than one being “better”, the choice often comes down to personal preference or whether you want to combine both types of collagen.

Are there any other types of collagen?

Yes, you may also come across porcine collagen (from pigs) or poultry collagen (from chickens). There are also plant-based products marketed as  vegan collagen .

It’s worth noting that collagen itself always comes from animal sources. Vegan products don’t contain collagen. Instead, they provide nutrients intended to support your body’s own collagen production.

So, should I choose marine or bovine collagen?

The answer is refreshingly simple: both have benefits, supporting skin, hair and nails in meaningful ways.

Marine collagen and bovine collagen work toward the same goal, helping you feel comfortable, confident, and supported in your skin as collagen levels naturally decline with age.

To find out more about how our collagen supplements can help you age powerfully , head over to our clinicals studies page or read more insightful articles on the Collagen Lab .