Grow Thicker, Fuller Hair with One of Our PEOPLE-Tested Hair Growth Oils — Prices Start at Just $9

This potent formula is rich in biotin and rosemary as the name suggests — which is said to balance and regulate scalp health, according to celebrity hairstylist Davey Matthew. Not only does this oil work hard to strengthen your strands and smooth your split ends, but it also soothes itchy and flaky scalps due to rosemary’s studied effects as an anti-inflammatory herb. Though the brand specifically calls out type 3A to 4C hair as the main benefactors of this oil, all hair types can use this product on their hair growth journey — all for $10. 

While testing this formula, we were impressed by how easy and mess-free the application was. We added it into our haircare routine in hopes of seeing a thicker hairline and didn’t quite experience those perks. However, at around week five, we started to see some hair growth and, at the end of the testing period, our hair appeared much thicker, stronger, and healthier.

Size: 4.23 ounces | Key Ingredients: Rosemary oil, mint, biotin

If you’re looking for a more budget-friendly option that can support growth around the hairline, try the Taliah Waajid Gro Hair Gro Bamboo and Coconut Milk Growth Oil. Per its name, the hair growth oil is enriched with bamboo and coconut oil — along with tons of other nourishing ingredients like castor oil, sunflower oil, sesame seed oil, and avocado oil — and it’s designed to support overall hair health while also promoting new growth. 

During the testing period, we saw some new growth around our hairline and were super impressed by how little product you have to use to get good coverage. The consistency is also on the lightweight side, so it absorbs easily into the scalp, and its nourishing properties take effect right away. Despite being an oil-based formula, we were a little surprised that it didn’t work as well on our frizzy strands, but overall, we loved this formula for a cheaper (yet effective) option. 

Size: 4 ounces | Key Ingredients: Bamboo, coconut oil

There’s no overnight solution to hair thinning — but there is Vegamour’s Gro Serum, which has been shown to improve the look, feel, and texture of users’ hair after 90 days of consistent use. This daily serum is color-safe and packed with plant-based ingredients such as turmeric, N. benthamiana, and red clover, which are clinically proven to recharge your dermal hair cells, stimulate the hair growth cycle, and prevent future hair loss, according to the brand. Since this bottle is so small, it’s best for spot treatments rather than all-over use.

Albeit expensive, the product is definitely worth the hype — just know that it takes time and consistency to achieve the desired results. During the testing period, we noticed some slight improvements to our hair, but six weeks wasn’t enough time to see any drastic changes.

Size: 1 ounce | Key Ingredients: Turmeric, N. benthamiana, red clover/mung bean

If you’re looking for a product that will lengthen and strengthen your hair without putting a dent in your wallet, then you might consider trying this blend. The Wild Growth Hair Oil is a multi-use product that not only encourages the growth of new hair, but also reduces blow-drying time, detangles, and works in small amounts (a little truly does go a long way). What’s more, you can snag this 4-ounce bottle for just $13 at full price, whereas several other options on the market will offer half the amount of product for significantly more.

While testing this product, we noticed hair growth every couple of weeks, which was far more than we expected — especially since this is not designed for daily use. It worked particularly well around our hairline and helped us thicken up some thin spots, making the cheap price tag all the more impressive.

Size: 4 ounces | Key Ingredients: Coconut oil, olive oil, jojoba oil

If you want a formula that will support some healthy regrowth, consider this option from Evolis. The hair oil features a concentrated formula that is rich in antioxidants and includes sanguisorba officinalis, which is a plant extract that can help hair grow longer. 

When testing this formula, we were impressed by its hydration benefits — after just one use, our strands felt revitalized and had lots of shine. While the serum is a bit runny, the button-release applicator makes it easy to add to the scalp area. Although it takes some time to reap the benefits, it’s an excellent choice for those who want to promote some regrowth in thinning areas.   

Size: 1.7 ounces | Key Ingredients: Sanguisorba officinalis

If you’re more concerned with keeping the hair on your head (a.k.a. less constant shedding), the Philip Kingsley Density Drops were one of our favorite serums that we tested, significantly improving the preservation of our tester’s existing hair rather than new growth. The lightweight serum is made with caffeine, saw palmetto extract, and a biomimetic peptide blend, which is the main anti-hair loss active ingredient in the formula (though the ingredients list goes on and on).

While testing this formula, we noticed a few baby hairs starting to sprout at hairlines with continuous use, which means that our tester’s hair got the chance to preserve its natural density, thus delivering a thicker mane, while also encouraging the growth of new hair. Our only con is its steep price, but if your goal is to keep your hair luscious and thick rather than stimulating new growth, then we think it’s well worth the investment.

Size: 2.87 ounces | Key Ingredients: Biomimetic peptide blend, azelaic acid, saw palmetto, caffeine

We’re no strangers to the wonders of Kerastase hair products, but the Initialiste Scalp and Hair Serum was one of the very best we tried. Not only did our tester notice her hair grow in length (about two inches in six weeks), but she also noticed her strands feeling thicker and stronger over time. In fact, she realized that she was due for a trim sooner than her routine visits were scheduled — a marker of this serum’s success.

Helmed with gluco peptide, wheat protein derivative, and native plant cells, this water-weight product penetrates the dermis to strengthen, repair, and hydrate the hair cuticles at the root. Our at-home tester used a dropper-full almost every day for six weeks, dispersing the liquid onto her scalp and throughout her wet hair after showering. Because of its lightweight texture, the serum never made our tester’s hair feel greasy or weighed down.

Size: 2.02 ounces | Key Ingredients: Gluco peptide, wheat protein derivative, native plant cells

This product from Augustinus Bader was instrumental in the thickening and fullness of our tester’s hair over a six-week testing period, turning her previously thin and scraggly strands into soft, shiny tresses that felt and looked noticeably thicker. As per the product’s instructions, she used this oil on her hair two to three times a week after washing and towel-drying. Because the formula is so light, it only took about two to three drops to evenly coat medium-length strands. It also never made our tester’s hair look or feel greasy, which was a huge perk.

Because this oil is meant for your strands and not your scalp, it was easier to see a pretty instant difference when using this oil. It made her hair look sleeker but also had reparative and nourishing long-term effects that made our tester’s hair look more voluminous, too.

Size: 1 ounce | Key Ingredients: Vitamin E, argan oil, castor seed oil, pomegranate oil, baobab oil, sunflower seed oil, squalane

When so many products limit you to using them one or two times a week, it’s hard to feel like you’re seeing results — which is why we liked this serum from Briogeo. Our tester concentrated this peptide density serum on the places she wanted to see a bit more fullness, which fell along her hairlines and parts. Her nightly routine included a single drop in each section followed by a 30-second massage.

She was most impressed with how well this serum disappeared into her hair, despite its thicker, gel-like consistency when it came out of the dropper. With a quick massage, the formula would fully absorb into our tester’s scalp and keep her roots from looking greasy, even when she went several days without washing it (while still applying the serum every night). Over time, she noticed these spots becoming better suited to heat styling — holding volume far better than it used to before.

Size: 1.5 ounces | Key Ingredients: Energy complex (caffeine), biotin, copper peptides

If you don’t love adding an oil to your haircare regimen but still want the benefits, a pre-wash like this one from Fable & Mane might be just what you need. The treatment is formulated with ashwagandha, dashmool, and castor oil, so it’s deeply hydrating and nourishing, helping to target dehydrated and dull strands.

Even though this is a product you’re meant to wash out, we definitely still felt the benefits of the hair oil — in a good way — after rinsing. Not only did it provide our have with tons of hydration, but it also helped keep frizz at bay when styling. Since it is an oil, we found the product was a bit runny and wish it had a thicker consistency. But, it was a small faux pas when considering the benefits.

Size: 1.8 ounces | Key Ingredients: Ashwagandha, dashmool, castor oil

If you have color-treated hair, a hair oil can help keep your hair healthy and in tip-top shape. Opting for a color-safe hair growth oil like this one from Bariatric can ensure you get all of those nourishing perks without potentially fading color. This formula is enriched with lots of hydrating ingredients, such as jojoba, rosemary, bergamot, frankincense, lemongrass, lavender, and glycerin. Our testers loved this formula because, although it doesn’t improve texture, it does give hair some deep, restorative nourishment while also promoting hair growth when used consistently. 

Size: 2 ounces | Key Ingredients: Jojoba, rosemary, bergamot, frankincense, lemongrass, lavender, glycerin

Curly hair can benefit greatly from hair oil — especially if your hair runs dry — because it can add tons of nourishing moisture back in and give strands a bit more definition. While we didn’t see much hair growth when testing the Bomba Curls Forbidden Hair Oil, we still loved this formula and think it’s worth adding to your curly haircare routine to promote an ideal growth environment.

One of the things that shocked us the most about this hair oil is how much it improved our natural hair color. Because of its nourishing ingredients, the oil added richness back into our strands and created the look of richer color and healthier-looking strands.

Size: 4 ounces | Key Ingredients: Coffee seed oil, castor oil, black cumin seed oil, rosemary extract

Pattern Beauty is known for making curl-loving products, but their Jojoba Oil Hair Serum expands their reach even further. Though anyone can use this product for an extra dose of moisture, the high content of jojoba oil in this formula makes this nourishing oil best suited for low porosity hair — usually straighter or wavy (but still textured) styles, according to a 2020 study. Low porosity hair is typically prone to scalp buildup, is difficult to wet completely, and takes a long time to dry, which requires a very lightweight product to do the trick.

This formula is boosted with safflower, rosehip, olive, and lavender oils to help repair broken or damaged hair while sealing moisture into your scalp and strands. Its hero ingredient, jojoba oil, is particularly great for reducing scalp inflammation and itchiness, working against flakiness and dandruff. And, while testing the formula, we reaped those nourishing benefits and saw softer and healthier strands.

Size: 3.9 ounces | Key Ingredients: Jojoba oil, safflower oil, rosehip oil, olive oil, lavender oil

Who said skincare was just for your face? Think of the Ouai Scalp Serum as hyaluronic acid for your hair, because this product is ideal for hydrating the skin barrier of your scalp — just like a serum for your complexion. All you need is to massage a few drops into your natural part and hairline daily, which not only feels amazing but will result in the appearance of more voluminous, healthy hair over time.

This is another haircare formula that is worth the hype. After testing it for six weeks, we saw three inches of growth, which was far more than expected. And, although we didn’t see a ton of changes to our texture, we did notice our hair looked and felt healthier, and our scalp loved the tingly sensation it gives off. 

Size: 2 ounces | Key Ingredients: Hyaluronic acid, arctic root, Siberian ginseng, chaga mushroom

One of the necessary steps in the hair growth process is stimulating your scalp with a scalp massager — which is usually a handheld, pointy-tipped (but never sharp) scrubber that you can use before or after applying oil. This two-in-one product comes with both the hair oil and the accompanying massager that you use together to create a spa-worthy haircare experience at home. The oil is fortified with aloe vera and, while testing, we found that it left our strands feeling so hydrated with our split ends looking much less noticeable.

If you already have a massager and aren’t looking to own another one, you can always just buy the Aciete de Moska by itself — but if you’re a hair growth newbie and need to start from scratch, this is a solid place to start.

Size: 2 ounce | Key Ingredients: Aloe vera, babassu oil, castor oil, meadowfoam seed oil