I've Tried Nearly 30 Hair Growth Oils, but These Are the 3 I Repeat-Buy

Isabel Bekele

Sun, July 28, 2024 at 4:00 AM UTC

5 min read

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My go-tos for fuller, shinier locks start at $7.

<p>Amazon/ InStyle</p> — Amazon/ InStyle

Given that I’m a shopping writer, it sometimes surprises people to learn that I didn’t grow up with a burning interest in skin care or makeup. I’ve always had my mom’s genes to thank for clear skin, and as far as makeup is concerned, I spent most of my adolescence hopelessly watching beauty videos on Youtube, only to give up on the tutorial five minutes in.

The one beauty category that has always been a part of my life, however, is hair care. Sunday in my household meant wash day, when hours would be dedicated to washing, detangling, and, most importantly, vigorously moisturizing my hair for the upcoming week. The women in my family are hair oil connoisseurs; there’s hardly a bathroom drawer in our entire house that isn’t filled to the brim with glass jars. And because I’ve long been after fuller, healthier locs, growth oils have always been my go-to. While I’ve tried plenty throughout the years, there are several that are instant rebuys for me—including one that I literally stockpile for fear that it’ll sell out. Since I’m in the middle of a restock, I figured now is the perfect time to reveal my all-star oils, which are all available on Amazon starting at only $7.

Editor-Loved Hair Growth Oils

Mielle Organics Rosemary Mint Scalp and Hair Strengthening Oil, $9 (Originally $10)
Sunny Isle Jamaican Black Castor Oil, $7
Difeel Rosemary and Mint Premium Hair Oil, $8

Mielle Organics Rosemary Mint Scalp and Hair Strengthening Oil

I’m hardly the first person to sing the praises of Mielle Organics’ viral hair growth oil, but trust me when I say that the fanfare is well-deserved. It’s been purchased over 100,000 times on Amazon in the past month alone, not to mention the hashtag #miellehairoil has over 10,000 views on TikTok—an impressive feat for an under-$10 pick.

I first began using the product several years ago, after noticing my edges thinning due to one too many tightly-wound protective styles. After implementing the hair oil into my nightly routine, it was only a matter of weeks before I began to see baby hairs sprout up around my hairline. The product is formulated with expert-approved growth ingredients like biotin, which is well-known for its hair-strengthening properties, and rosemary oil, which protects hair from breakage and shedding. Plus, it’s infused with a blend of over 30 essential oils and nutrients, which nourish the scalp, add shine, and, of course, promote growth.

If TikTok hasn’t won you over to this product yet, a quick read through its Amazon reviews will. A shopper struggling with postpartum hair loss was “shocked” by how much their hair grew back after applying the oil twice daily for a month, while a customer in their 40s said their “hair is softer and appears healthier” after use.

Sunny Isle Jamaican Black Castor Oil

Few scents can transport me back to my childhood like the smell of this Sunny Isle Jamaican Castor Oil, which I’ve relied on for years to give my hair an extra boost of moisture. Clearly, I’m not alone in my love of the product—over 1,000 Amazon customers have snagged the oil in the past month, and hundreds of those customers left five-star reviews.

Known for its hydrating properties, castor oil is a widely popular ingredient for those struggling with flakey and dry scalps. It helps the hair absorb moisture and retain shine, leading to healthier locks overall. And, along with promoting glossy and thick hair, this organically-grown oil can also be used to heal dry and cracked skin, as castor oil is a common salve for many skin ailments.

The oil has a thicker consistency, so I like to incorporate it into my routine pre-shampoo—that way, I can let the product soak in before rinsing it out. One Amazon shopper, who agrees that the treatment is like “magic in a bottle,” uses it several times a week, and has seen thicker hair and less shedding as a result—plus, they’ve also used it on other areas of their body, noting that it’s kept their skin “supple” and “crepe-free.”

Difeel Rosemary and Mint Premium Hair Oil

After the Mielle Organics oil taught me that my hair drinks up the combination of rosemary, mint, and biotin, I decided I needed to try other products with the same winning formula. After all, if it’s not broken, why fix it? Enter: the Difeel Rosemary and Mint Hair Oil, another under-$10, customer-loved growth treatment Amazon shoppers can’t get enough of.

Purchased by over 5,000 in the past month alone, this oil has been widely loved by users, myself included, because of its ability to promote growth, provide shine, and strengthen overall hair health. It’s formulated with rosemary oil, which thanks to its antimicrobial properties, can reduce dandruff and other types of scalp irritation. And of course, it also contains hair-growth mainstay biotin, which fights inflammation, a source of hair loss.

If you need further reassurance that this oil is a worthy buy, look no further than its reviews section. One shopper said the oil “significantly improved” the health of their hair, adding that their mane now has “a noticeable luster and vitality.” Another customer who, like me, has a family filled with different hair types, said the oil “works for everyone,” and loves that it keeps hair moisturized but “doesn’t weigh it down.” For only $8, it’s been the perfect addition to my hair care collection for when I want an oil that’s lightweight, but still helps me reach my hair growth goals.

While I’ve tried countless hair growth treatments in the past, these three oils are the ones I find myself repurchasing time and time again. Browse through more of Amazon’s most popular hair oils, below.