Does Rosemary Oil Help Hair Growth?

Rosemary oil is trending online, with countless users swearing by its hair growth properties. From TikTok tutorials to YouTube reviews, the buzz for this essential oil doesn’t seem to be dying down just yet.

With the hashtag #rosemaryoil surpassing billions of views and taking the haircare space by storm, does rosemary oil actually help with hair growth? In this guide, we take a closer look at the scientific evidence behind rosemary oil and healthier-looking hair and how it compares to more traditional treatments.

Rosemary oil is an essential oil extracted from the leaves of the rosemary plant, officially known as “Rosmarinus officinalis.” It has a strong, woody, but fresh scent that’s instantly recognisable. Rosemary oil is typically used in aromatherapy, skincare, and now, thanks to social media, haircare routines.

Rosemary oil has been used for centuries and for a wide range of purposes. For example, rosemary oil has:

1. Antioxidant, anti-inflammatory, and antimicrobial properties

Rosemary oil has antimicrobial effects against certain bacteria and fungi, including E. coli and Staphylococcus aureus, and protects the body against free radicals because it is a rich source of antioxidants.

2. Healing benefits

Because of its antimicrobial, anti-inflammatory, and antioxidant properties, research shows that rosemary oil can speed up wound healing, lower inflammation, and promote the growth of new tissue.

3. An ability to promote nerve growth

Rosemary oil promotes nerve growth, benefiting nerve tissue. Rosemary contains carnosic acid, which promotes the growth of a specific nerve growth factor. Animal studies show an improvement in cognitive function in both animals that are experiencing cognitive decline and those who aren’t.

4. Potential to support circulation

When applied topically, rosemary oil can improve local blood circulation, which is why it’s used in haircare and skincare products. Animal studies show that its effects in improving blood flow can alleviate pain.

Rosemary oil has shown promise in early clinical trials for stimulating hair growth, especially in androgenetic alopecia, also known as male or female pattern hair loss. It has been shown to be as effective as popular over-the-counter treatments and may improve circulation in the scalp, promoting hair growth. However, further research is needed to confirm these effects.

One study published in 2015 compared the effects of rosemary oil with a 2% minoxidil solution, an over-the-counter hair loss treatment known as Regaine. The results showed that after 6 months, both groups experienced a significant increase in hair count, but the rosemary group reported less scalp itching.

A 2022 study demonstrated that 10% rosemary oil containing oleogels could promote hair growth. One of the theories behind how rosemary oil works for hair growth is its ability to improve blood flow in the scalp, providing essential nutrients and oxygen to the hair follicles, stimulating hair growth.

Another study published in 2023 conducted in mice found that applying a hair lotion containing 1% rosemary oil was better than 2% minoxidil at initiating hair growth. Compared to minoxidil and placebo, the animals treated with the rosemary oil-containing lotion had hair that was of better quality and had a better appearance, length, and weight.

You can use rosemary oil in several ways to support hair growth and health. However, there are important factors to consider, like proper dilution and consistency, to avoid scalp irritation. It’s important that you do not apply pure rosemary oil to your scalp and that you patch test before using a new product, to check for any sensitivities.

Here are some of the ways you can use rosemary oil for your hair:

1. Direct application with a dedicated product

This is the simplest way to apply rosemary oil to your scalp, but it must be a dedicated product that has been diluted properly. You should never apply neat rosemary oil directly to your scalp.

To apply the rosemary oil product:

• part your hair and apply a few drops to the exposed area of your scalp
• massage it gently, allowing the oil to soak in
• leave the product in for as long as the instructions tell you to before washing out

2. Mix with carrier products

You can combine a few drops of rosemary oil with a teaspoon of a carrier oil, such as coconut or jojoba and massage gently into the scalp. Leave it in for a maximum of 10 minutes before rinsing it out.

3. Add to hair masks or conditioners

Try adding a few drops of rosemary oil to your favourite hair mask or conditioner and apply as you normally would.

How long before you’ll see results?

Based on clinical studies, it may take 6 months or more before you notice any benefits from using rosemary oil for hair growth.

How often should you apply rosemary oil to your scalp?

Research studies have shown that rosemary oil can be applied twice daily. However, you should test to see how well your scalp tolerates it before applying it every day. Instead, start slowly, like once per week, and gradually increase if you experience no side effects. Applying rosemary oil too frequently can lead to dry hair.

What to be aware of before you use rosemary oil for hair growth

Before using rosemary oil for hair growth, be aware that it is a potent essential oil; this means that if it is not diluted correctly, it can cause irritation. That’s why it is important to add it to a carrier oil or another hair product, such as a mask or conditioner, before applying it to your hair.

Before using rosemary oil for the first time, you should:

• avoid applying too much, as high concentrations can irritate your scalp
• always dilute rosemary oil into a carrier oil or hair mask before applying to your hair or scalp
• avoid getting rosemary oil in your eyes, as it can cause stinging
• speak to a healthcare provider before using essential oils, including rosemary if you are pregnant or breastfeeding

Rosemary oil is a cost-effective hair treatment that appeals to anyone who is seeking a natural and low-risk hair growth option. However, it is important to understand how it compares to other common hair loss treatments to help you pick the best solution for you.

Here’s how rosemary oil compares to popular prescription-only and over-the-counter hair loss treatments:

Rosemary oil is gaining attention, particularly online, as a natural hair loss remedy. Early studies show that it may be as effective as minoxidil with fewer side effects. It’s believed to work by improving circulation in the scalp and stimulating the hair follicles, leading to improved hair growth. However, more research is needed to fully understand its benefits.

If you are considering rosemary oil, applying it consistently and correctly is important. It must be diluted and can take up to 6 months to see results.

Rosemary oil may be suitable for anyone experiencing mild hair thinning, but stronger treatments may be necessary if you are experiencing moderate hair thinning or the early signs of hair loss. At Superdrug Online Doctor, we can provide effective hair loss treatments to suit your individual needs.

Is it OK to leave rosemary oil in my hair?

Yes, you can leave rosemary oil in your hair for several hours or overnight. However, you should follow any instructions on the product you are using with regards to how to use and apply the product. If you experience any irritation, you should rinse the product out of your hair.

Can rosemary oil regrow hair?

Early research suggests that rosemary oil may be as effective as minoxidil at encouraging hair growth, especially in hair loss caused by male or female pattern baldness.

Is rosemary oil better on wet or dry hair?

Rosemary oil can be applied to wet or dry hair, but the best approach will depend on why you are using it. Applying it to dry hair is considered effective for scalp treatments and massage, while wet hair allows for better distribution and is better if you are using a rosemary oil-containing hair product as a conditioning treatment.

Can rosemary oil make my hair thicker?

Rosemary oil may help increase hair thickness and stimulate regrowth because of its ability to stimulate blood flow to your scalp, nourishing the hair follicles and improving hair health.

Do I have to wash out rosemary oil with shampoo?

Yes, ideally you should shampoo your hair after applying rosemary oil, especially if you have applied it in a carrier oil to your scalp or have left it in overnight. This will help to remove any excess oil and prevent greasiness. However, you should read the instructions printed on the product packaging for the best results.

Why does my hair feel dry after using rosemary oil?

Rosemary oil can make hair feel dry if it is not diluted properly or you have used too much. Because rosemary oil is highly concentrated, it is important to apply it diluted and only as frequently as your scalp and hair can tolerate.