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Collagen Supplements

Collagen is often sold as a beauty product, as if its only purpose is to make women look younger. That’s not why we make it. We developed Skinful marine collagen to support skin and Fundamental bovine collagen to build stronger bodies. Shopping for collagen can feel like the Wild West, so we keep it simple: pure, fairly priced, and highly absorbable. Our MSC-certified marine collagen comes from wild-caught fish in the North Atlantic, with the powder produced in Norway. Our bovine collagen is sourced from high-welfare, grass-fed cattle in Switzerland and the EU.

A white container of Bare Biology Pure Bovine Collagen Powder, featuring an illustration of a woman with flowing hair and a yellow label indicating hydrolysed peptides from grass-fed cattle.  
new
 
FUNDAMENTAL
A white cylindrical container from Bare Biology, featuring an artistic face illustration and a blue certification logo, holds Skinful Pure Marine Collagen Powder, sustainably sourced from Norwegian cod.  
best seller
 
A tub of Bare Biologys Marine Collagen With Vitamin C: Strawberry Flavour features an artistic profile of a woman. MSC certified, it contains type 1 marine collagen powder and vitamin C for enhanced wellness.  
 
  • "A beauty must have."

  • "Bare Biology Skinful Marine Collagen is one of the kindest on our wallets."

  • "One of the best collagen supplements."

  • Named "best-sourced collagen powder" by Get The Gloss. "We are impressed by the lengths this brand goes to in order to get the purest-quality product."

Collagen is a tiny molecule in your body that holds together the connective tissues of your skin, ligaments, organs, cartilage, muscles and blood vessels. It's a protein, and since your body is mostly made up of skin and connective tissue, collagen is the most abundant protein you have.

Because it's everywhere, collagen is classified by type depending on where it's found in the body. There are 28 known types of collagen, but most supplements focus on the three your body uses most:

Type I – skin, hair, bones, teeth, ligaments, and organs
Type II – cartilage
Type III – organs, skin, muscles, blood vessels

Each type is made from a mix of amino acids like glycine, proline and hydroxyproline. These amino acids help your body create collagen that strengthens skin, repairs muscles and keeps joints cushioned and healthy. Your body naturally makes its own collagen, but we make less of it as we age.

So, where does the collagen in supplements come from? Most collagen is sourced from animal tissues, which naturally contain the same amino acids your body uses to build and repair its own connective tissue.

Marine collagen, like Skinful, comes from fish (specifically cod skin) and is rich in Type I collagen, which our customers find helps their skin, hair and nails. Bovine collagen, like Fundamental, comes from cattle hide and contains both Type I and Type III collagen, which supports the connective tissue of the skin as well as muscles, ligaments, and joints.

We bang on about the source because, just like buying good quality food, it's better for your body, too. Our marine collagen comes from wild, sustainably caught cod. Our bovine collagen is sourced from Swiss & EU, grass-fed cattle raised to EU-approved welfare standards, so we can promise it's free from hormones, antibiotics and other nasties.

With our collagen, it's as pure as it gets. Just collagen.

Whilst we become infinitely wiser with age, our collagen production slowly declines. Women tend to down tools faster than men (perfect). But we can replace it.

When you take collagen supplements, the tiny amino acid peptides travel through your bloodstream to where they're needed. They work like messengers, telling your body's cells to produce more of your own natural collagen in areas like your skin, muscles, and ligaments.

Taking collagen encourages the body to make more of its own. The science is still catching up when it comes to pinning every benefit to the wall, but we can say with confidence that introducing collagen into your nutrition is great for skin health, your hair and keeping your joints healthy too.

We’ve been formulating collagen since 2019, and in that time, we’ve seen a whole spectrum of benefits reported by our customers.

• Promotes skin elasticity and firmness.
• Supports joint health and mobility.
• Strengthens skin, joints and bones.
• Aids muscle recovery and repair.
• Supports bone density and connective tissue strength.
• A useful protein for all your moving parts.


If you want to get into even more detail, we've got an ultimate collage guide for that too.

Our pure collagen powders, Skinful and Fundamental, are tasteless and heat-resistant, so you can stir them into porridge, smoothies, or any drink you like. One scoop with our bespoke scooper (or four rounded teaspoons) give you 10g of easily absorbed bovine collagen.

Skinful with vitamin C is flavoured with natural strawberry (and very tasty). Vitamin C doesn't handle heat well, so it's not suitable for hot drinks. Instead, mix it in a post-workout smoothie or as an easy morning or afternoon pick-me-up with water or juice.
To make it stick, we recommend stacking collagen with an existing habit. Stir it into your morning coffee, post-workout shake, or whatever fits your life.

The science suggests that higher doses (around 20 to 30g a day) may support post-exercise recovery and wound healing. To maintain daily strength in your body, we recommend about 10g a day as a steady dose. Adjust to suit your routine, your budget, and how your body feels. Don’t overthink it. Your body’s smart. Whatever it doesn’t need, it gets rid of. You’ll figure out what works best for you.You can learn more about how to take collagen powder effectively in our expert guide.

As we age, collagen production decreases, which can cause sagging skin. Recent studies have shown that consuming collagen powder can help with improving skin elasticity, hydration, firmness, and brightness.

It’s totally natural for your collagen production to decline as you age, but collagen supplementation can play a vital role in maintaining joint function and bone integrity. This support can contribute to overall mobility, flexibility, and quality of life.

Hair and nail strength can be supported by collagen, nurturing healthy growth and reducing brittleness.

Collagen contains amino acids that support the lining of the digestive tract, potentially improving gut health.

Although it doesn't serve as the main source of protein for muscle building, like whey, collagen can still play a role in aiding muscle repair and facilitating recovery.

We bare all. So you can relax.

  • Wild North Atlantic Cod
  • MSC Certified Sustainable Supply
  • Made in Norway
  • 3rd Party Tested
  • Natural Ingredients
  • Icon for purity, hands holding a droplet
    Dissolves Quickly
A white container of Bare Biology Pure Bovine Collagen Powder, featuring an illustration of a woman with flowing hair and a yellow label indicating hydrolysed peptides from grass-fed cattle.
Pure Bovine Collagen Powder £29.95
A white cylindrical container from Bare Biology, featuring an artistic face illustration and a blue certification logo, holds Skinful Pure Marine Collagen Powder, sustainably sourced from Norwegian cod.
Skinful Pure Marine Collagen Powder £39.95
Landscape image of Bare Biology's collagen range displayed on two shelves amongst other crockery

What are the differences between marine collagen & bovine collagen?

Bovine is from cow hides, marine collagen comes from fish skin. That’s the clearest difference we can state factually. Both are good for skin and support the production and replenishment of connective tissues that hold together your skin, joints and everything else that keeps you upright.

Marine collagen is naturally rich in Type I collagen, which is found in your skin, bones and tendons. It’s the type most associated with skin, hair and nail health. That’s why we called ours Skinful. Marine collagen has been well-studied for skin support, and our customers would say—backed by a gazillion reviews you can read (here)—that it does a pretty great job. 

Bovine collagen contains around 95% type I and 5% type III collagen. Both are found in connective tissue, joints, muscles and skin. It’s often known as the all-rounder because its amino acid profile supports collagen production throughout the body. That’s why it’s a popular choice for whole-body support, including muscle maintenance and recovery.

It’s worth mentioning that many studies on marine collagen used higher doses than those on bovine. Which means we can't provide a definitive comparison to suggest which is better for you. 

So, for now, what we believe really separates the good, the bad, and the spenny of the collagen world is how it’s sourced. Our Fundamental collagen comes from Swiss & EU, grass-fed cattle raised under EU-approved animal welfare standards. Skinful is sourced from wild, sustainably caught cod skin. That means no hormones, no antibiotics, no toxins from contaminated water, and no nasties. Just collagen, from us.

Which collagen is best for you?

Bovine and marine collagen are both great options. Annoying answer? Yes. There are no direct studies comparing them, so science doesn't even have a concrete direction for us to guide you towards. As always, we'd say that the best option is the one that fits your body, values, and lifestyle.

Here's a simple way to compare marine vs bovine collagen

FeatureSkinful (Marine Collagen)Fundamental (Bovine Collagen)
Collagen Types Type I Type I and Type III
Best For Supporting skin, hair and nails Supporting skin, joints, muscles, bones and full-body recovery
Heat Stability Pure Skinful marine collagen is good with heat. Our strawberry Skinful with Vitamin C is not stable in hot liquid. Stable in hot drinks like coffee or tea
Sourcing MSC-certified wild-caught fish from Norway Swiss & EU grass-fed cattle under EU welfare standards, free from hormones and antibiotics
Dietary Suitability Both pure Skinful and Skinful with vitamin C are halal and pescatarian-friendly. Pure Skinful is Kosher. Not suitable for vegetarians or some faith-based diets
Sustainability Highly sustainable marine source Sustainably sourced from grass-fed cattle

Collagen FAQs

About Our Collagen FAQS

What is collagen and what is its purpose in the body?

Is bovine a good source of collagen?

Is it worth taking collagen?

Is there any nutritional benefit of bovine collagen over marine collagen?

Who should not take collagen?

How long should I take collagen supplements to see results?

When should I start taking collagen?

When should I take collagen, morning or night?

What is collagen powder made of?

What are the potential benefits of collagen for gut health?

What's an amino acid profile and why is it important?

How many calories in 1 serving

Is Skinful type I, II or III peptides?

What is the protein content?

Is maltodextrin used in the drying process of your collagen?

Does your collagen contain iodine?

Is your collagen suitable for those with histamine issues/mast cell disorder?

Can I recycle your packaging?

Collagen Info & Expert Advice

Are you sold on collagen and now wondering about the nitty-gritty of how to take it, the ingredients, which one to choose, and how much to take? Read on for more collagen information or check out our expert tips pages for advice.

Get inspired: Our collagen in action ✨

@barebiology
Bare Biology Fundamental Bovine Collagen tub positioned in between a cup of tea and a tea pot