Your hair will thank you for incorporating one of these 11 oils into your routine

Did someone say hair growth and length retention?

Best oils for hair growth
(Image credit: Getty / Royalty-free)

When it comes to hair growth, sadly there isn’t a quick fix. It can take time, money and trial and error to find what works for your hair type. But hair growth and too-good-to-be-true solutions are all the rage right now, especially on TikTok. Naturally, this has caused some confusion when it comes to hair oils and hair growth. 

It’s fair to say that we’ve never been more obsessed with oils for hair growth and thinning than now; in part thanks to rosemary oil well and truly going bonkers on TikTok. But while the impact of oils on hair growth might be limited, there are huge benefits to having the product in your routine line-up. We called in the help of two experts to find out everything you need to know about hair oils, and which are our favourites. 

Can oils help with hair growth? 

Let’s clear up some confusion.  Although TikTok has led us to believe that oil — specifically the rosemary kind — is the key to all our growth woes, that’s not always the case. Unfortunately, “there is very little to no scientific evidence that hair oils help to promote hair growth,” explains trichologist Angela Onuoha. A 2015 study did find that rosemary increased hair growth over a 6 month period, and although this is promising, don’t expect this to be some kind of miracle cure. There are many factors that determine hair growth. This 2020 study looking into central centrifugal cicatricial alopecia (CCCA) specifically found no natural ingredients, including rosemary oil, to have any benefit to patients. It's always worth remember that not everyone's wonder product, or ingredient, is the same. 

When it comes to what oils can definitely do for our hair, “is give you length retention,” which is where Angela believes the confusion comes from. “When you apply oil to your hair it basically lubricates the hair shaft, which works as a little protective layer against friction,” explains Angela. “This is especially important to reduce the friction whenever you comb or brush your hair, or when it’s rubbing against your clothes and or pillow. Less friction means less shaft damage, which leads to less breakage overtime.” Less breakage, therefore, means length is being retained, which can look like your hair is growing faster than before. “In reality, your hair is just healthier, which allows it to grow longer without breaking,” she adds.  

How to apply hair oil? 

When it comes to choosing a hair oil, Angela recommends going for something lightweight or silicone-based oil and to apply it on a daily basis. This keeps your hair feeling and looking great whilst doing their job, but not creating build-up. “If you’re going for [oils that are] too thick, like castor oil, it will cause quicker build up forming over time and due to its stickiness it makes it very easy for things like dust to stick to it. Rather, go for a lighter one and use a little bit more depending on your hair density,” explains Angela. 

It’s worth finding the right oil for you though, “there are so many benefits, including preventing hair breakage and split ends, as well as eliminating frizz,” says Hairstylist and hair extensions specialist Abigail Butler. Most of all, oils help condition the hair, which naturally repels water, especially if you have low porosity hair. 

When it comes to hair oils for wigs and extensions, “using sulphate-free and alcohol-free products are essential to maintaining healthy hair extensions and looking after your wig. Make sure your hair extensions and wigs are nourished, especially if they are 100% human hair,” Abigail says. "Oils are fantastic at creating a luxurious feel to your wig and hair extensions, especially if they are light to leave your hair feeling silky smooth,” she adds.  

Limitations of hair oil 

As discussed before, there are absolutely limitations of hair oil. Angela warns against thinking it’s a cure to everything. “There is no one cure for all hair problems. See [hair oil] as a film former, a thin coat to protect the hair from the outside. Friction is one of our biggest enemies when it comes to hair, so in this case, hair oils are your best friend when it comes to that!” she adds. 

Best hair oils for hair growth

1. Olaplex No7 Bonding Oil 

Olaplex No.7 Bonding Oil

(Image credit: Look Fantastic)

Olaplex No7 Bonding Oil

Reasons to buy

+
You’re after sulphate-free, cruelty-free and vegan 

Reasons to avoid

-
You want an inexpensive, high street option 

Abigail recommends the Olaplex No7 bonding treatment for her clients for a lightweight, reparative and heat-protecting formula. This treatment is fantastic if you’re focused on hair growth and often heat or colour treat your hair. 

2. Mielle Rosemary Mint Scalp & Hair Strengthening Oil

Mielle Rosemary Mint Scalp & Hair Strengthening Oil - rosemary oil for hair growth

(Image credit: Sephora)

Mielle Rosemary Mint Scalp & Hair Strengthening Oil

Reasons to buy

+
You want an everyday oil for targeting growth

Reasons to avoid

-
You want something with more styling properties 

Abigail also loves the Mielle Organics Rosemary Mint growth hair oil, which has over 30 essential oils in the formula. Don’t be using this as a miracle treatment though, it can yield impressive results, but no product is a miracle worker. 

3. Arkive Good Habit Hybrid Oil

Arkive Good Habit Hybrid Oil

(Image credit: Boots)

Arkive Good Habit Hybrid Oil

Reasons to buy

+
You’re looking for a mini all-in-one 

Reasons to avoid

-
You get through oils very quickly 

Small but mighty, the Arkive Good Habit Hybrid Oil is a fabulous multi-purpose oil. This ultra lightweight oil contains baobab and jojoba oils to smooth and shine each strand. If you’re focused on hair health and growth, this oil can also be used as a treatment. 

4. Moroccanoil Treatment 

Moroccanoil Treatment

(Image credit: Sephora UK)

Moroccanoil Treatment

Reasons to buy

+
You want something to help repair strand health 

Reasons to avoid

-
You don't like heavily scented products 

This is a highly acclaimed hair oil for a reason. Thanks to its argan-packed formula, it can help keep flyaways under control, meaning often people don’t need to blow dry and straighten their hair as much; or for as long. This, in turn, can help with hair growth due to the improved condition of your strands. 

5. Vegamour Gro Hair Serum

Vegamour Gro Hair Serum

(Image credit: Sephora UK)

Vegamour Gro Hair Serum

Reasons to buy

+
You want something to specifically target hair growth 

Reasons to avoid

-
You don’t want to spend much money 

Specifically designed for hair growth, Vegamour’s Gro Serum has hundreds of 5-star reviews for a reason. Of course, there are many factors that contribute to hair loss (and growth) but this treatment contains ingredients like red clover, thought to help inhibit the hormone DHT, which can lead to hair thinning. 

6. Ruka Hair Serum

Ruka Hair Serum

(Image credit: Ruka Hair)

Ruka Hair Serum

Reasons to buy

+
You want a pre-styling product 

Reasons to avoid

-
You prefer a traditional oil 

Okay, technically this isn’t an oil but it deserves a spot in this list. Created specifically for afro hair, this serum works as a protective barrier for the hair and helps retain the length of your hair and create smoothness and reduce dry lengths and ends. 

7. Fable and Mane Holiroots Hair Oil

Fable & Mane Holiroots Hair Oil

(Image credit: Fable & Mane)

Fable and Mane Holiroots Hair Oil

Reasons to buy

+
You want a hard-working, multipurpose product 

Reasons to avoid

-
You don't want a scented product 

Fable and Mane’s Holiroots Oil really does keep hair feeling like it’s freshly washed and styled. This is a pre-wash treatment that is designed to stimulate the scalp to promote hair growth, as well as protect precious strands. Plus, it’s got a really elegant scent. 

8. Bread Beauty Supply Everyday Gloss Hair Oil

Bread Beauty Supply Everyday Gloss Hair Oil

(Image credit: Cult Beauty)

Bread Beauty Supply Everyday Gloss Hair Oil

Reasons to buy

+
You want a deeply conditioning oil 

Reasons to avoid

-
You prefer something a little more lightweight 

Specifically formulated for type 3c to 4a hair, Bread Beauty Supply’s Everyday Gloss Hair Oil helps to define, detangle and de-frizz. It’s thicker than some oils out there, so use sparingly, but coats the hair beautifully for lots of added moisture. 

10. ByErim Luxury Hair Oil 

ByErim Luxury Hair Oil

(Image credit: ByErim)

ByErim Luxury Hair Oil

Reasons to buy

+
You’re after an all-in-one oil 

Reasons to avoid

-
You’re looking for something a little cheaper 

It doesn’t get much classier than By Erim when it comes to hair oils. This formula contains eight hard-working oils to create a consistency that’s non-greasy, lightweight and doesn’t cause build-up. 

11. Percy and Reed Wonder Treatment Oil 

Percy and Reed Wonder Treatment Oil

(Image credit: Percy and Reed)

Percy and Reed Wonder Treatment Oil

Reasons to buy

+
You want an ultra lightweight oil 

Reasons to avoid

-
You want something to use on your scalp too 

Percy and Reed has hair oils for incredible shine down to a fine art and the Wonder Treatment Oil is no different. A little goes a long way and if used sparingly, you’ll have zero greasy residue but glossy ends. 

Beauty Contributor

Tori is a freelance beauty journalist and contributor for Marie Claire. She has written for various titles, including Allure, Glamour, Elle, Refinery29, Brides, and more. Currently training to be a nail tech, Tori is a total nail enthusiast and always has time to talk all things nail art. When she’s not writing about beauty and testing products, Tori can be found walking her rescue dog Pip, drinking great coffee, and eating as many croissants as humanly possible.