Can Drinking Rosemary Tea Help Hair Growth? | The Herbal

Drinking rosemary tea is not directly proven to grow hair, but its compounds may support scalp.

You probably already know that rubbing rosemary oil on your scalp has some serious hair-growth reputation. A 2024 research review found it performed similarly to minoxidil for a common form of hair loss. That’s impressive for an herb.

But that research studied the oil applied topically, not the tea you sip from a mug. So when people ask about rosemary tea and hair growth, the honest answer is more complicated. Here’s what the evidence actually says.

Why People Think Drinking It Works

Rosemary contains compounds that can influence your body from the inside out. Some of those same compounds — like carnosic acid and rosmarinic acid — are absorbed when you drink the tea.

The idea is that if you drink enough rosemary tea, those compounds travel through your bloodstream and eventually reach your scalp, where they might improve circulation or fight inflammation. That’s biologically plausible but not clinically confirmed.

A 2007 study found that inhaled rosemary and lavender reduced cortisol, the stress hormone linked to some types of hair shedding. Whether drinking the tea produces the same effect hasn’t been studied directly.

Why The Drinking vs. Rubbing Distinction Matters

It’s easy to assume that what works on your skin will work from the inside. But delivery method matters a lot for active compounds, and the research gap here is wide.

• Topical rosemary oil (proven): A 2024 review in PMC found rosemary oil improved blood flow to the scalp and performed comparably to minoxidil for androgenic alopecia. This is the strongest evidence we have.
• Rosemary tea as a hair rinse: Some people use cooled rosemary tea as a final rinse after shampooing. This delivers compounds directly to the scalp, though research is lacking compared to the concentrated oil.
• Drinking rosemary tea: No peer-reviewed study has tested whether drinking rosemary tea leads to measurable hair regrowth. The compounds are diluted during digestion and metabolism.
• Rosemary’s antioxidant effects: Rosemary does act as an antioxidant, which some sources suggest may protect hair follicles from damage. But this mechanism hasn’t been tested specifically for oral consumption and hair growth.
• Individual biology: How your body processes rosemary’s compounds depends on your unique gut microbiome, liver function, and baseline nutrition. One person’s experience won’t predict another’s.

The takeaway isn’t that rosemary tea is useless — it’s that the research simply hasn’t been done. The plausible mechanisms (improved circulation, lower cortisol, antioxidant protection) all come from topical or inhalation studies, not from drinking the tea.

What The Research Actually Says About Rosemary Tea Hair Growth

The strongest evidence for rosemary and hair comes from a 2024 review that looked at rosemary’s efficacy for androgenic alopecia. The review concluded that rosemary oil worked in a similar way to minoxidil, largely by improving vascularity and blood flow to the scalp.

For drinking the tea, the evidence is much thinner. Some sources cite the tea’s potential to support circulation and digestion, and a few claim those effects could theoretically benefit hair follicles. But clinical testing for oral rosemary tea as a hair-growth treatment simply hasn’t been done.

One area where the research is slightly clearer is stress. The 2007 PubMed study found that rosemary and lavender enhanced free radical scavenging activity and reduced cortisol. Since chronic stress is linked to telogen effluvium (temporary shedding), lowering cortisol could indirectly support healthier hair cycles. But that’s a long chain of logic, not a direct cause-and-effect link.

Should You Try Rosemary Tea Anyway?

If you’re considering adding rosemary tea to your routine, you have a few options — and the choice depends on your goal.

None of the evidence suggests rosemary tea is harmful, so drinking it for general wellness is reasonable. But if you’re looking for measurable hair regrowth, topical rosemary oil or standard treatments have more support.

How To Use Rosemary If You Want To Try It

If you want to give rosemary a fair shot for hair health, here are the approaches worth trying, ranked by evidence.

1. Topical rosemary oil: Dilute a few drops of rosemary essential oil in a carrier oil (jojoba or coconut) and massage into the scalp. Leave on for at least 30 minutes before washing. The 2024 review found this comparable to minoxidil for some people.
2. Rosemary tea hair rinse: Brew strong rosemary tea, let it cool completely, and pour it over clean hair as a final rinse. Leave it on without rinsing. This delivers compounds directly to the scalp without the strength of concentrated oil.
3. Drink rosemary tea: Steep 1 teaspoon of dried rosemary or a few fresh sprigs in hot water for 5-10 minutes. Drink 1-2 cups daily. This may support circulation and stress reduction, though direct hair growth effects are unproven.
4. Inhale rosemary aroma: Add a few drops of rosemary oil to a diffuser or inhale from a steaming cup of tea. The 2007 cortisol study used inhalation, so this may help with stress-related shedding.

Whichever method you choose, consistency matters more than intensity. Rosemary compounds don’t accumulate dramatically — you need regular exposure over weeks to months to see any potential effect.

What About The Anti-Androgenic Angle?

Some sources suggest rosemary has anti-androgenic properties, meaning it may block some effects of androgens like DHT (the hormone linked to pattern baldness). That mechanism would be relevant for both drinking and topical use.

The 2024 review noted that rosemary improved vascularity and blood flow — that’s the circulatory mechanism, not necessarily a hormonal one. The cortisol study from 2007 found that lavender and rosemary enhanced free radical scavenging and reduced the stress hormone cortisol, which could indirectly affect hair shedding.

Whether rosemary truly blocks DHT through oral consumption hasn’t been established in human studies. The anti-androgenic claims come mostly from cell studies and mechanistic reasoning, not from clinical trials on humans drinking rosemary tea.

Until more research is done, the anti-androgenic story is interesting but unconfirmed for oral use.

The Bottom Line

Drinking rosemary tea is a pleasant, low-risk habit that may support circulation and stress reduction, but it hasn’t been shown to grow hair on its own. For hair-loss concerns, topical rosemary oil has better evidence, and standard treatments like minoxidil remain the most studied options.

If you’re experiencing noticeable thinning or shedding, a dermatologist can evaluate your scalp, run bloodwork if needed, and help you choose between topical rosemary, minoxidil, or other treatments based on your specific hair-loss pattern.