Marine or bovine? Type 1 or 3? Collagen supplements come with a lot of jargon. The short version: bovine collagen (from cattle) is rich in Type 1 & 3, the types most associated with skin, hair, nails and everyday connective tissue; marine collagen (from fish) is mainly Type 1 with a small particle size. Both work — what matters most is that the collagen is hydrolysed into peptides your body can absorb.
Quick answer: Bovine collagen delivers Type 1 & 3 (skin, hair, nails, joints); marine collagen is mostly Type 1 and suits pescatarians. Choose a hydrolysed product either way, and pair it with vitamin C.
What is collagen & what are the types?
Collagen is the most abundant protein in the body — the scaffolding of skin, hair, nails, tendons and joints. Natural collagen production gradually declines with age, which is why collagen supplements have become so popular. There are several types, but three matter most here: Type 1 (skin, hair, nails, bones), Type 2 (mainly cartilage) and Type 3 (skin and blood vessels, usually alongside Type 1).
Marine vs bovine collagen
Bovine collagen comes from cattle and is naturally high in Type 1 & 3 — the combination people most often want for skin and general connective-tissue support. Marine collagen comes from fish, is predominantly Type 1, tends to have a very small peptide size, and suits people who avoid beef or prefer a fish source. Neither is universally “better”; the right choice depends on your dietary preference and which collagen types you want.
| Source | Main types | Best for | Note |
|---|---|---|---|
| Bovine | Type 1 & 3 | Skin, hair, nails, joints — all-round | Most popular for general support |
| Marine | Mostly Type 1 | Skin; pescatarians | Small peptide size; fish source |
Why hydrolysed peptides absorb better
Whole collagen is too large for the body to absorb well. Hydrolysed collagen (also called collagen peptides) has been broken down into much smaller fragments, which are easier to absorb and use. Whichever source you choose, look for “hydrolysed” on the label — it’s the single most important quality marker.
A note on vitamin C
Vitamin C contributes to normal collagen formation for the normal function of skin, bones, cartilage, gums and blood vessels — an authorised health claim. Many people take their collagen alongside a source of vitamin C for this reason.
Hydrolysed Bovine Collagen — Type 1 & 3, 120 Capsules
Highly absorbable hydrolysed collagen peptides for everyday skin, hair, nail and joint support. Zero fillers, UK-made.
View Collagen →How and when to take collagen
Collagen is flexible to take — there’s no single “best” time, so pick a moment you’ll remember daily. Consistency is what matters, and because collagen supports gradual, structural tissues, most people give it 8–12 weeks of daily use before judging results. Pairing it with vitamin C is a sensible habit.
Frequently asked questions
What is the difference between marine and bovine collagen?
Bovine collagen (from cattle) is rich in Type 1 & 3, suiting all-round skin, hair, nail and joint support. Marine collagen (from fish) is mostly Type 1 with a small peptide size and suits people who avoid beef.
What are Type 1 & 3 collagen good for?
Type 1 & 3 are the collagen types most associated with skin, hair, nails and everyday connective tissue, which is why they are the most popular combination in supplements.
Why does hydrolysed collagen matter?
Whole collagen is too large to absorb well. Hydrolysed collagen is broken into small peptides that are easier for the body to absorb, so “hydrolysed” is the key quality marker to look for.
When is the best time to take collagen?
There is no single best time; choose a moment you will remember each day. Consistency matters more than timing, and many people pair collagen with vitamin C.
How long until I see results from collagen?
Collagen supports gradual, structural tissues, so most people give it around 8–12 weeks of daily use before judging results.
This article is for general information only and is not medical advice. Food supplements are not a substitute for a varied, balanced diet and a healthy lifestyle. Do not exceed the recommended daily dose. If you are pregnant, breastfeeding, taking medication or under medical care, consult your doctor or pharmacist before use. Sources: NHS (Vitamins and minerals); EFSA authorised health claims.