Collagen is the most abundant protein in the human body — the structural scaffolding of skin, joints, hair and nails. Natural production declines gradually from our mid-twenties, which is why collagen has become one of the most searched-for supplements in the UK.
Marine vs bovine, powder vs liquid
Marine collagen, sourced from fish, is prized for its fine peptides. Applied Nutrition offer it as a powder (Marine Collagen 300g) and as convenient Liquid Marine Collagen shots. Their Collagen Peptides powder is a versatile alternative that stirs into coffee, smoothies or yoghurt without much fuss.
Prefer not to mix powders? Capsule formats such as Applied Nutrition's Collagen + Coconut or their Hair, Skin & Nails formula suit travel and busy mornings, while BioTechUSA's Collagen Liquid delivers a full serving in a ready-made drink.
The hyaluronic acid pairing
Hyaluronic acid helps skin retain moisture, which is why you'll often see the two together — as in BioTechUSA's Collagen & Hyaluronic capsules and their high-dose Hyaluronic & Collagen formula. BioTechUSA's Clear Collagen Professional turns the daily serving into a pleasant fruit-flavoured drink.
What does the evidence say?
Research on collagen peptides is encouraging for skin elasticity and hydration, and for joint comfort in active people, with typical study doses between 2.5 g and 10 g daily taken over 8–12 weeks. Consistency matters more than timing — pick a format you'll genuinely take every day.
A note for gut health
Beauty starts deeper than skin: Reflex Nutrition's Supergreens & Gut Support capsules complement a collagen routine by looking after digestion.
Compare every option in our Collagen & Beauty collection.
This article is for general information only and is not a substitute for professional medical advice. Marine collagen contains fish.