Collagen for hair
There is no good evidence that collagen supplements thicken hair or reduce hair loss.
Short answer There is no good evidence that collagen supplements thicken hair or reduce hair loss. The nutrients with authorised claims for normal hair are biotin, zinc and selenium.
What we know
Hair is made of keratin, not collagen. A few small, manufacturer-funded studies report thicker-feeling hair, but none is strong enough to support a claim. Collagen is a source of amino acids, which hair needs, and so is any protein in your diet.
If hair is the goal
Check iron and thyroid with a GP if shedding is new. A supplement built on biotin, zinc and selenium, such as Oriflame's Skin, Hair & Nail NutriComplex, at least carries authorised claims. See hair, skin and nail vitamins.
Related pages
- Collagen for jointsEvidence that collagen eases joint pain is limited and mixed.
- Collagen for menCollagen works the same way in men and women.
- Collagen and menopauseSkin loses collagen faster in the years after menopause as oestrogen falls.
- Liquid collagenLiquid collagen is hydrolysed collagen already dissolved, sold as shots or bottles.
Keep exploring
- Gut health supplements
- Omega-3 supplements
- Wellosophy Omega 3
- Liquid collagen
- Calcium supplements
- Probiotics with antibiotics
Questions people ask
What should I know about collagen for hair?
There is no good evidence that collagen supplements thicken hair or reduce hair loss.
Can I take this with medication?
Ask a pharmacist or GP first; some supplements interact with medicines.
Do supplements replace a balanced diet?
No. They are meant to add to a varied diet, not stand in for one.
Sources
Checked 9 October 2026.