Collagen has become one of the most talked-about supplements in beauty and wellness - and for good reason. As the most abundant protein in the body, collagen keeps our skin smooth, plump, and firm, while also supporting our hair, nails, bones, and joints. But as we age, our natural collagen production declines, which is why topping up with a supplement can make such a visible difference.
With so many options on the market, one question keeps coming up: which type of collagen is best?
Understanding collagen types
The two most common sources of collagen supplements are:
- Bovine collagen - Sourced from cows, usually containing Type I and Type III collagen, which are primarily good for bones, and muscles.
- Marine collagen - Sourced from fish, and primarily Type I collagen, which makes up around 80% of your skin’s structure.
Both can replenish lost collagen as we age to support overall wellbeing. But more important than whether your collagen comes from cows or fish is how it’s processed.
Why hydrolysed collagen matters
Not all collagen supplements are equally effective. In fact, many types of collagen are broken down by stomach acids before your body can use them.
That’s where hydrolysed collagen (also called collagen peptides) comes in. Hydrolysed collagen has been broken down into tiny peptides, making it highly bioavailable - which means your body can absorb and use it more efficiently.
The form is just as important as the source. Powdered collagen peptides are particularly versatile, easy to mix into drinks, and deliver a concentrated dose. Taken daily, hydrolysed collagen powder can help support:
- Improved elasticity and hydration
- Smoother, plumper-looking skin
- Reduced appearance of fine lines and wrinkles
Bovine vs marine collagen
So, which should you choose - bovine or marine collagen?
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Bovine collagen: A popular option that contains both Type I and III collagen, supporting joints and connective tissues.
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Marine collagen: Naturally rich in Type I collagen, making it particularly suited to skin health. Hydrolysed marine collagen peptides are often considered the most bioavailable form.
Both can be effective if they’re hydrolysed and in powder form. But if skin is your focus, marine collagen has a natural edge.
Collagen that does more
At Doctor Seaweed, we’ve created Collagen+, designed to be the most effective way to support skin from within.
Here’s why it stands out:
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Hydrolysed marine collagen peptides: Small, bioavailable peptides for optimal absorption and visible results.
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Flavourless powder format: Easy to stir into tea, coffee, or smoothies - no fishy taste or additives.
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Blended with organic Scottish seaweed: Rich in iodine and antioxidants, our PureSea® seaweed supports skin health and overall wellbeing.
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Backed by science: Collagen+ is the UK’s first collagen with approved health claims for skin.
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Sustainably sourced: Our collagen is MSC-certified and traceable from wild caught Norwegian cod.
Each serving delivers 5000mg of premium collagen peptides plus iodine-rich seaweed, creating a daily ritual that nourishes your skin from the inside out.
When it comes to choosing a collagen supplement, the key factor isn’t just whether it’s bovine or marine - it’s that it’s hydrolysed collagen peptides in powder form. Many gel or gummies aren't providing collagen peptides that are absorbed and utilised by the body. That’s what ensures your body can actually absorb and use it effectively.
Both bovine and marine collagen can support your skin, hair, and nails - but if you’re looking for maximum absorption and proven results for skin, hydrolysed marine collagen in powder form, like Collagen+, is hard to beat. Click here to shop now.