Collagen for hair growth? Here's what research actually shows

Collagen supplements are often promoted as a way to boost hair growth, but current research offers little evidence that they can do so.

While collagen is essential for healthy skin and connective tissue, experts say there is not enough high-quality research to recommend collagen supplements as a proven treatment for hair loss or hair growth.

What collagen does in the body

Collagen is one of the body's most abundant proteins and plays a key role in maintaining the structure of skin, muscles, tendons, ligaments, bones and cartilage.

Some researchers believe collagen may help support the skin and connective tissue surrounding hair follicles, leading to claims that it could promote healthier hair.

Research remains limited

Despite the marketing claims, studies linking collagen supplements to hair growth remain limited and inconclusive.

One 2023 study found that a supplement containing hydrolysed fish collagen and several other nutrients improved hair loss when used alongside other treatments. However, the research lasted only 12 weeks and was funded by the supplement's manufacturer, making it difficult to draw firm conclusions.

Experts say more independent, long-term studies are needed before collagen supplements can be recommended for hair growth.

What may help instead

Rather than relying on collagen supplements, experts recommend eating a balanced diet rich in protein and vitamin C to support the body's natural collagen production.

People experiencing hair loss should consult a dermatologist, who can identify the underlying cause and recommend evidence-based treatments, including medications, dietary changes or other therapies.

Note to readers: This article is for informational purposes only and not a substitute for professional medical advice.It is based on user-generated content from social media, and the claims have not been independently verified.