What collagen supplements are
Collagen is the main structural protein in skin, tendons and bone. Supplements usually contain hydrolysed collagen peptides from bovine or marine sources, often labelled as types I and III.
Collagen itself has no authorised health claim in the EU. Claims on collagen products must come from other nutrients in the formula.
See Super Collagen with Vitamin C & Biotin — €32Why vitamin C and biotin appear alongside
Vitamin C contributes to normal collagen formation for the normal function of skin — an authorised claim, which is why it is so often paired with collagen.
Biotin contributes to the maintenance of normal skin and hair. Check the amount per serving so you do not double up with a multivitamin.
See Radiance Antioxidant — €40Reading the label
Look for the collagen source, the grams of collagen per daily serving, and the amounts of any vitamins. Tablets typically deliver less collagen per serving than powders, so compare like with like.
If you have a fish or shellfish allergy, check the source carefully before choosing a marine collagen.
Setting honest expectations
Sleep, sun protection, not smoking and a protein-rich diet matter more for skin than any single supplement. Treat collagen as one part of a routine, and reassess after a sensible period.
Further reading
Collagen Supplements: What the Label Can and Cannot Promise
Provide specific protein peptides but should not be marketed with unauthorised cure or anti-ageing promises.
Biotin Supplements: Hair Claims, Lab Tests and Safe Use
Contributes to maintenance of normal hair and skin and normal energy-yielding metabolism.
Vitamin E Supplements: Antioxidant Claims in Context
Contributes to protection of cells from oxidative stress. Large doses are not automatically beneficial.
More guides
This guide is general information, not medical advice. Food supplements should not be used as a substitute for a varied diet and healthy lifestyle.