Rosemary oil and hair growth: Research, effectiveness, and tips
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Interestingly, these results start to make sense once we look at evidence demonstrating the combined efficacy of mechanical stimulation with certain hair loss topicals. This person decided to commit to the first book’s scalp stimulation techniques (mainly, the massages). But he took it a step further… He also combined these massages with the application of rosemary oil. One study evaluated the protective effects of rosmarinic acid on scar formation in rats with experimentally induced heart attacks. The investigators found that rats treated with rosmarinic acid had improved heart function, decreased cardiac scar tissue size, and reduced expression of collagen.
What makes rosemary oil effective for hair growth?
Not much is known about rosemary oil's safety in pregnant and breastfeeding people. Even though rosemary oil is used topically, confirming risks and side effects with your healthcare provider is a good idea. If you have very fine hair and/or an oily scalp, James advises using rosemary oil once a week as a scalp treatment and washing it out of hair immediately to avoid any greasiness. Helen Reavey, board-certified trichologist and founder of Act + Acre, recommends leaving the oil in your hair for “at least 30 minutes,” and you can absolutely leave it in longer. “I recommend a longer amount of time as it can be used as a leave-in treatment,” she says.
Meet the Experts
The team wanted to compare the effects of rosemary oil versus 2% minoxidil on hair count. So they conducted a test on 100 men with pattern hair loss (androgenic alopecia). A 2016 study found that rosemary affected blood circulation and skin health in rats. If the same were true of humans, then rosemary oil might prevent hair loss by improving hair and scalp health. However, more research is needed to see if rosemary oil can help prevent hair loss.
The Best Rosemary Oil for Hair Growth Products to Buy Online
In the latest frenzy, the app is rife with people raving about the benefits of rosemary oil for hair growth. From working wonders after chemotherapy to addressing baldness and being the secret to envious locks, the botanical has racked up some good press—and the endorsement of some medical and hair professionals. But after diving into the oft-cited study used to back up the science behind this ingredient, and speaking with a dermatologist and trichologist, it turns out that rosemary oil might not be as effective as you think. From dandruff to hair loss, here’s what it really can—and can’t—do.
He longed for a natural remedy to reverse the signs of ageing and reclaim his youthful appearance. Both Christen and Dr. Turner stress that you shouldn’t use pure rosemary oil as it can lead to irritation. For those looking for a more permanent hair loss solution, hair transplants involve moving hair from one part of the body to the scalp, providing lasting results for hair restoration.
Best rosemary oil products
Rosemary oil is a natural anti-inflammatory and antioxidant that can support scalp health and, in theory, help support hair growth. Scalp health has a major impact on hair growth, and improving blood circulation is important for the anagen phase of the hair growth cycle. This is the active phase, in which cells in the follicles of your hair rapidly divide to produce new hair, according to famed trichologists at scalp-care brand Philip Kingsley. In other words, supporting follicle health can help create the right environment for your best hair growth, says Yates. Rosemary essential oil is considered safe when applied to the scalp or skin after being diluted with a carrier oil.
What are the potential side effects of using rosemary oil for hair growth?
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Plus, it's anti-inflammatory, which is great for anyone who's experiencing inflammation-based hair loss or thinning from stress and/or hormone fluctuations. Another study compared the effects of rosemary oil and minoxidil (a medication used to treat hair loss) in men with androgenetic alopecia. After six months, both rosemary oil and minoxidil groups showed significant improvement in hair count, hair thickness, and hair growth rate (2). Rootcos Rosemary Hair Growth Serum promises to stimulate and strengthen the hair follicles.
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It’s formulated with rosemary leaf extract, ideal for those looking for a less-potent formula that's easy to use. To level up their benefits, consider teaming them with a serum or oil. There are tons of hair products containing rosemary oil, including shampoos, conditioners, and scalp treatments. Since sifting through hundreds of products and reviews is overwhelming, here's what the pros recommend.
The 27-year-old said she had been lucky to have thick tresses before stress and a lack of proper haircare triggered her extreme shedding. For instance – just look at this study measuring the combined effectiveness of dermarolling plus Rogaine (we’ll get to why this is relevant in a minute). Rosemary oil helps prevent fibrosis – and may even stop this process from happening. Two notable examples of pro-inflammatory cytokines are 1) interleukins, and 2) tumor necrosis factor.
Further delving into the results shows comparison bar graphs that pretty much flatline. There are also other variables that are unclear, including the scalp surface area studied. PRP therapy involves injecting platelet-rich plasma derived from your blood into the scalp to stimulate hair growth by promoting the repair of tissues and supporting hair follicle health. While more research is needed, existing evidence supports rosemary oil as a potential natural hair growth aid worth considering. Some research shows that rosemary oil may help stimulate hair growth. However, this depends on the cause of hair loss and the individual.
However, when you buy something through our retail links, we may earn an affiliate commission. She has also written about sexual wellness, fashion, culture, and politics both at Marie Claire and for publications like The New York Times, Bustle, and HuffPost Personal. She has worked extensively in the e-commerce and sales spaces since 2020, including two years at Drizly, where she developed an expertise in finding the best, highest quality goods and experiences money can buy. As a film school graduate, she loves all things media and can be found making art when she's not busy writing. Our experts continually monitor the health and wellness space, and we update our articles when new information becomes available.
And the less DHT that converts in our scalp tissues, the better our chances for hair recovery. Many people are already experimenting with powerful androgen receptor blockers – like spironolactone – to help fight hair loss (and with some success). But unfortunately, synthetic androgen receptors are too powerful – and despite their benefits for hair recovery – often exert feminizing effects. For instance, men who are becoming women often use spironolactone to reduce androgen activity and help aid their gender transition.
So if you’re going to use rosemary oil, you should probably use it in conjunction with mechanical stimulation. Certain acids in rosemary oil – like rosmarinic and ethanolic acid – have a direct impact on inflammation. In fact, these acids can significantly attenuate (or reduce) the inflammatory process, and in doing so, help fight hair loss. But first, it’s critical that we understand the science behind rosemary oil – how it promotes hair regrowth, why, and how we can use these mechanisms of action to our advantage. The evidence points to five key mechanisms in which rosemary oil encourages hair regrowth – and we’re going to cover all of them. And all seasonality aside, there’s a good chance both test groups would’ve lost hair over the same period had they not sought either treatment.
The participants of the study showed a significant increase in hair count after 6 months of using rosemary oil. The overall result of the study provided evidence that rosemary oil may be effective for certain hair growth. More revealing recent studies show that rosemary directly helps protect against hair loss. One 2015 trial pitted the essential oil against minoxidil, commercially known as Rogaine. Both were used on human subjects with androgenic alopecia (male or female pattern baldness). Rosemary oil is also thought to potentially boost blood flow to hair follicles, thus encouraging healthier hair growth, and can also minimize cell-damaging free radicals with its strong antioxidant properties.
This study highlights why it’s important to look beyond a study’s abstract – especially when it comes to hair loss. While the summary may make a study’s results look enticing, the reality is that if an abstract is void of numbers, there’s probably a good reason. This is problematic for a variety of reasons – one of which is that studies show 2% minoxidil is far inferior to 5% minoxidil in men. That means the study doesn’t necessarily give us a fair comparison of rosemary vs. minoxidil in real-world usage settings for this cohort of people. To gauge hair count, researchers took before-after treatment photos and used two dermatologists to independently count specific segments of each participant’s scalp.
One of the staple herbs in Italian cuisine, rosemary, is beloved for its peppery, fragrant flavor, making it an excellent complement to roast vegetables or meat dishes. Its energizing scent is widely used in aromatherapy as it is believed to positively affect the body's nervous system. Research has even suggested that rosemary oil can have an analgesic effect similar to painkillers. But its most valuable use to the beauty community is its believed ability to support hair growth. You might have seen lots of people raving about rosemary oil on TikTok and other social media platforms. But like many YouTubers and bloggers, they’re often paid to promote certain products, so you can’t always be sure their claims are true.
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