A Dermatologist’s Perspective on Rosemary

Why patients ask about it

Rosemary has had an unusually successful few years online, and I am asked about it more than any other botanical.

The interest is reasonable. The expectations attached to it are frequently not.

What the studies actually show

A small number of comparative trials have produced results worth noting, with limitations worth noting equally: modest sample sizes, varied preparations and short follow-up.

“Promising and unresolved” is the accurate summary. It is not equivalent to an established treatment.

How I advise using it

As part of a gentle, consistent scalp care habit, it is a pleasant and low-risk inclusion. Undiluted essential oil on the scalp is not advisable.

If there is an underlying medical cause for hair loss, rosemary will not address it, and time spent hoping otherwise is time lost.

About the contributor

Practises dermatology with a focus on scalp health and long-term hair care. Contributes to Soumm as an independent reviewer.

A note on evidence

Hair responds to many things at once: sleep, nutrition, hormonal changes, scalp condition and stress among them. Published here for education only; individual concerns should be discussed with a qualified healthcare professional.