Best Hair Growth Oil? 1,695 Reviews of Mielle, Kitsch and Briogeo

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Review-analysis guide: 1,695 customer reviews read on Target, Ulta and Sephora (October 25, 2026), sorted and counted by us; product details from Amazon listings checked October 25, 2026. We paraphrase patterns and never copy reviews. Results are patterns that customers described and we counted.

By The Beauty Read · Checked October 25, 2026 · AI-assisted research and editing · Contains Amazon affiliate links

The best hair growth oil in these reviews depends on what you can live with. In 1,366 usable reviews from Target, Ulta and Sephora, Mielle Rosemary Mint (paid link) drew the most growth reports (22%) but also the most reports of more shedding (16%), most of them from 2024 on. Kitsch Rosemary (paid link) drew the fewest complaints, and Briogeo Scalp Revival Rosemary (paid link) drew the most scalp-comfort praise (38%).

Best hair growth oil: what 1,695 reviews agree on

Shopping for a hair growth oil? We read 1,695 reviews of three popular rosemary picks at Target, Ulta and Sephora to see how often reviewers report growth, a calmer scalp, a greasy feel or more shedding: Mielle Rosemary Mint Scalp & Hair Strengthening Oil, Kitsch Rosemary Scalp & Hair Strengthening Oil and Briogeo Scalp Revival Rosemary Pre-Wash Oil. All three list rosemary with other oils; Mielle adds mint and menthol, Kitsch lavender, and Briogeo charcoal, ceramides and bisabolol. [R-TGT-MI] [R-ULT-MI] [R-ULT-KI] [R-ULT-BR] [R-SEP-BR] [A1] [A2] [A3]

Each hair growth oil leads on something different. Mielle drew the most growth reports (22%), Briogeo the most praise for a calmer scalp (38%), and Kitsch the most praise for softer, shinier hair (27%) with the fewest complaints. The complaints differ just as much: more shedding and skin reactions for Mielle, mold reports for Briogeo, and a greasy feel for some users of all three (7% to 11%). [R-TGT-MI] [R-ULT-MI] [R-ULT-KI] [R-ULT-BR] [R-SEP-BR]

How we read 1,695 reviews at Target, Ulta and Sephora

This time we read every review each retailer served for these three oils, with no fixed target. Target's feed shows at most 2,500 reviews per view, so we combined star-level, newest and most-helpful views and reached 5,069 of Mielle's 7,201: every 1- to 4-star review and part of the 5-star ones. 4,078 of those were copied from other sites and skipped unread, leaving 991 written at Target. Because some 5-star reviews were out of reach, Mielle's complaint shares may run a little high. Ulta's review pages stop after the newest 300 and repeat reviews within them, so we read every distinct review they served (Ulta shows 6,634 Mielle and 1,108 Kitsch reviews in total). At Sephora we read every US English Briogeo review except 379 marked incentivized or written by staff. [R-TGT-MI] [R-ULT-MI] [R-ULT-KI] [R-ULT-BR] [R-SEP-BR]

Of the 1,695 we read, 329 were set aside. All 172 distinct Ulta reviews of Mielle came from September and October 2026, and 136 of them said they got it free or in exchange for a review, so we set aside the whole run. Ulta's Briogeo page opened with a December 2023 wave of 87 reviews, 81 of them gifted, which we also set aside. Another 70 were about another product, a set or the brand (29), from someone who had not used it (22), had no real text (8), were about shipping (5), said it was free (4), repeated a review (1) or were not in English (1). That leaves 1,366 usable reviews: 948 for Mielle, all from Target, 222 for Kitsch from Ulta, and 196 for Briogeo from Sephora (113) and Ulta (83). [R-TGT-MI] [R-ULT-MI] [R-ULT-KI] [R-ULT-BR] [R-SEP-BR]

Some cautions. Mielle's reviews run from 2018 to 2026, and what reviewers say changed over time, so we show the years separately below. Kitsch and Briogeo samples are much smaller, and each product comes from different stores and years, so part of any gap is store and timing. Sephora pools Briogeo's full size and mini (5 mini reviews). Star ratings are not comparable across retailers, so we compare what reviewers describe, and a review cannot show what caused a change in someone's hair. [R-TGT-MI] [R-ULT-MI] [R-ULT-KI] [R-ULT-BR] [R-SEP-BR]

Mielle Rosemary Mint, the oil for hair growth with the most reports and most warnings

Mielle's oil lists rosemary oil and biotin with mint and essential oils including castor, tea tree, jojoba, coconut and peppermint, and its ingredient list includes menthol. The listing says it supports a dry scalp and helps fortify strands, and suggests it as a scalp oil, a pre-wash oil or a split-end treatment. We link the 2 oz bottle sold by Mielle Organics and shipped from Amazon. [A1]

As an oil for hair growth, Mielle has the most reports. Of 948 usable Target reviews, 212 (22%) said their hair grew or that edges or thin spots filled in, 186 (20%) said hair felt softer or shinier, and 193 (20%) liked the scent. Of the 134 who said they deal with thinning, shedding or hair loss, 71 reported growth. [R-TGT-MI]

It also drew the most warnings: 150 reviewers (16%) said their hair shed more or fell out after using it, and 121 (13%) reported itching, burning, a rash or more flaking. Those reports peak in 2024 and 2025. Before 2024, 8% of 677 reviewers reported more shedding and 25% reported growth; from 2024 on, 36% of 271 reported more shedding, 17% reported growth and 52% gave one or two stars. [R-TGT-MI]

See Mielle Rosemary Mint Scalp & Hair Strengthening Oil, 2 oz on Amazon (paid link) · This link opens the 2 oz bottle sold by Mielle Organics and shipped from Amazon.

Kitsch Rosemary, the rosemary hair oil with the fewest complaints

Kitsch's oil lists rosemary extract, biotin and castor, jojoba and argan oils with a lavender scent, and says it soothes a dry, irritated scalp and loosens buildup. Its Amazon listing says to leave it on at least 10 minutes before washing, at least once a week; Ulta also suggests it as a daily oil for ends. We link the 2 fl oz (60 mL) bottle sold by Kitsch LLC and shipped from Amazon. [A2]

If you want a gentle rosemary hair oil, Kitsch drew the fewest complaints here. Of 222 usable Ulta reviews, 61 (27%) said hair felt softer or shinier, 49 (22%) liked the scent and 44 (20%) said their scalp felt better. Thirty-one (14%) reported growth, and of the 26 who said they deal with thinning or shedding, 11 did. [R-ULT-KI]

Only 2 reported more shedding and 1 a skin reaction. The most common complaint was a greasy feel or a hard wash-out (16, 7%), and 55 reviews (25%) were general comments with no specific result. Fourteen (6%) gave one or two stars. All the reviews we could read (the newest 241 of 1,108 Ulta shows) are from April 2025 to October 2026. [R-ULT-KI]

See Kitsch Rosemary Scalp & Hair Strengthening Oil, 2 fl oz on Amazon (paid link) · This link opens the 2 fl oz (60 mL) bottle sold by Kitsch LLC and shipped from Amazon.

Briogeo Scalp Revival Rosemary, a hair oil for dry scalp comfort

Briogeo's pre-wash oil lists rosemary and castor oil with biotin, ceramides and bisabolol from chamomile to soothe scalp sensitivity. It also contains binchotan charcoal, which its listing says may separate, so it asks you to shake the bottle. It says to leave it on 10 to 15 minutes or overnight, then shampoo. We link the 3.4 fl oz bottle sold and shipped by Amazon.com. [A3]

As a hair oil for dry scalp comfort, Briogeo leads. Of 196 usable reviews (113 at Sephora, 83 at Ulta), 74 (38%) said their scalp felt better, less dry, itchy or flaky, the highest share of the three (46% at Ulta, 32% at Sephora). Forty-four (22%) said hair felt softer or shinier, 24 (12%) noticed results quickly and 17 (9%) reported growth. [R-ULT-BR] [R-SEP-BR]

Its main complaints are a greasy feel (22, 11%) and the bottle: 20 reviewers (10%) reported mold or a spoiled bottle, 18 of them at Sephora, and 19 of the 20 described mold or dark growth. About 9 reviewers say the dark sediment is the charcoal, and we cannot tell which the others saw. Ten (5%) reported more shedding. [R-ULT-BR] [R-SEP-BR] [A3]

See Briogeo Scalp Revival Rosemary Pre-Wash Oil, 3.4 fl oz on Amazon (paid link) · This link opens the 3.4 fl oz bottle sold and shipped by Amazon.com.

Hair growth oil for women and men with thinning hair: what reviewers reported

Many readers look for a hair growth oil for women who are shedding or thinning; the reviewers below are not sorted by gender. In these reviews, 171 reviewers said they deal with thinning, shedding or hair loss: 134 for Mielle, 26 for Kitsch and 11 for Briogeo. Of them, 71, 11 and 4 reported growth, and 16, none and 2 reported more shedding. [R-TGT-MI] [R-ULT-MI] [R-ULT-KI] [R-ULT-BR] [R-SEP-BR]

Among reviewers who said how long they had used an oil when they reported growth or fuller hair, 12 had used it under 3 weeks, 50 for 3 weeks to 2 months and 33 for 3 months or more. Ninety-four Mielle reviewers mention curly, coily or 4c hair or protective styles, and 13 put it on their edges, hairline or thin spots. [R-TGT-MI] [R-ULT-MI] [R-ULT-KI] [R-ULT-BR] [R-SEP-BR]

How to use hair growth oil, and how each one feels

How to use hair growth oil like these: Mielle and Briogeo say to massage it into the scalp. Kitsch says to leave it on at least 10 minutes before washing, at least once a week, and Briogeo 10 to 15 minutes or overnight before shampoo. Mielle can be left in or rinsed after 10 minutes under a cap. [A1] [A2] [A3]

Some reviewers use it that way: 47 Briogeo (24%), 24 Kitsch (11%) and 92 Mielle (10%) reviewers use it as a pre-wash treatment. Because Mielle drew the most reports of itching or burning, our suggestion is to try any of them on a small patch of scalp first. [R-TGT-MI] [R-ULT-MI] [R-ULT-KI] [R-ULT-BR] [R-SEP-BR]

On feel, reviewers split less than you might expect: 7% of Mielle and Kitsch reviewers and 11% of Briogeo reviewers found the oil greasy or hard to wash out, while 6% to 7% said it felt lightweight or washed out easily. Seventy-six Mielle reviewers mention its minty, cooling feel. On scent, 22% of Kitsch reviewers and 20% of Mielle reviewers liked it, against 7% for Briogeo. [R-TGT-MI] [R-ULT-MI] [R-ULT-KI] [R-ULT-BR] [R-SEP-BR]

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Frequently asked questions

What is the best hair growth oil in these reviews?

It depends on the trade-off. Mielle drew the most growth reports (22% of 948 usable reviews) but also the most reports of more shedding (16%). Kitsch had the fewest complaints, and Briogeo the most scalp-comfort praise (38%). No review can prove an oil grew hair.

Does rosemary oil for hair growth work, according to reviewers?

Some reviewers think so: 22% of Mielle, 14% of Kitsch and 9% of Briogeo reviewers said their hair grew. Others saw no difference (3% to 6%), and Mielle had more reports of shedding than any other. Reviews describe what people noticed, not what caused it.

Can a hair growth oil make hair fall out?

Some reviewers say it did: 150 Mielle reviewers (16%) reported more shedding or hair loss after using it, mostly from 2024 on, against 10 for Briogeo and 2 for Kitsch. We cannot tell the cause. If shedding is sudden or patchy, a dermatologist can look for reasons.

Which oil is best for a dry, itchy scalp?

Briogeo drew the most scalp-comfort praise: 38% of its 196 usable reviewers said their scalp felt less dry, itchy or flaky, against 20% for Kitsch and 13% for Mielle. Ten percent of Briogeo reviewers reported mold or a spoiled bottle.

How do you use hair growth oil?

Mielle and Briogeo say to massage it into the scalp. Kitsch says to leave it on at least 10 minutes before washing, at least once a week; Briogeo says 10 to 15 minutes or overnight before shampoo; Mielle can be left in or rinsed after 10 minutes under a cap.