Mielle Rosemary Mint Scalp & Hair Strengthening Oil Review: Would Users Buy It Again?
Disclosure: As an Amazon Associate I earn from qualifying purchases. If you buy through links on this page we may earn a commission at no extra cost to you. How this review was made: We did not test this oil in person. This verdict is based on our analysis of retailer ratings, user comments, dermatologist interviews and summaries of the research on rosemary oil, all listed at the end of this article. We found no clinical study of this specific Mielle product. Our method.
Buy it as a pleasant scalp and hair oil, not as a proven hair-growth treatment
Shoppers clearly like this oil: Walmart shows 4.7 out of 5 across about 13,400 ratings, and Ulta shows 4.7 out of 5 across about 6,500 reviews, with 86% saying they would recommend it. People praise the minty scalp feel, softer and shinier hair and the value. Growth is a different story. The main human study behind rosemary oil was small, enrolled only men, had no placebo group and has not been independently repeated, and it tested rosemary oil, not this blend. Dermatologists quoted by Marie Claire and WebMD describe the evidence as limited and suggest it as an add-on at most. If you have real hair loss, see a dermatologist.
Check current price on Amazon → Prices and availability change often, so we don't list them here.Buy it again if you…
- want a lightweight, minty oil for a dry or flaky scalp
- use protective styles or like oiling ends and scalp
- enjoy a scalp-massage routine and keep expectations modest
Skip it if you…
- expect proven hair regrowth or have significant hair loss
- have a sensitive, eczema-prone or acne-prone scalp
- dislike oily roots or product buildup
This review summarizes user experiences and published expert comments and is not medical advice. Hair loss can have many causes, including hormones, thyroid problems, nutrition and medications. If you are losing hair, see a dermatologist or doctor. If you are pregnant or breastfeeding, ask a healthcare provider before using essential oils. Reactions vary from person to person.
Mielle Organics Rosemary Mint Scalp & Hair Strengthening Oil is a small bottle of blended oils for the scalp and hair. Ulta lists rosemary leaf oil and peppermint oil alongside castor, jojoba, coconut and sweet almond oils, tea tree, eucalyptus and lavender oils, and burdock, nettle and horsetail extracts, plus biotin. Walmart's listing says it is free of parabens, sulfates, paraffins and mineral oils.
It went viral as a "hair growth oil." We looked at what users actually report, and at what the research on rosemary oil can and cannot support.
What owners say, at a glance
Bars show our editorial summary of how consistently owners praise or complain about each area across all sources — not a lab measurement.
The key details
| Size | 2 oz bottle |
|---|---|
| Type | Leave-in scalp and hair oil, also used for hot oil treatments |
| Notable ingredients | Rosemary and peppermint oils, castor, jojoba, coconut and sweet almond oils, biotin, herbal extracts |
| Free of | Parabens, sulfates, paraffins, mineral oils (per Walmart listing) |
| Clinical testing of this product | None found |
What the evidence actually says about growth
The growth claim leans on one 2015 trial published in SkinMed. According to a careful summary by Acibadem, it enrolled 100 men with pattern hair loss and compared rosemary oil with the weaker over-the-counter strength of minoxidil for six months. Neither group changed meaningfully at three months. Both gained hair by six months, with no significant difference between them, and the rosemary group reported less scalp itching.
That is interesting, but limited. There was no placebo group, only men took part, the comparison was against the weaker minoxidil, the gains were modest, and the result has not been independently repeated. Dermatologist Dr. Boakye told Marie Claire there is limited evidence that rosemary oil causes regrowth, and that thicker-looking hair may come from the scalp massage rather than the oil. Mayo Clinic and the NHS, as summarized by Acibadem, list minoxidil among treatments with demonstrated benefit. Finally, the study tested rosemary oil, not Mielle's multi-oil blend, so its results cannot simply be applied to this bottle.
What users love
What users complain about
How it holds up over time
High ratings across retailers suggest many buyers keep using it, mostly as a scalp and hair-care step they enjoy. Long-term growth results are not something we could verify. Dermatologist Shilpi Khetarpal told WebMD that meaningful improvement from rosemary oil may take about six months, so anyone trying it for thinning should track progress with photos and see a doctor if loss continues.
Tips from users and experts
- Patch-test first on a small area of scalp or skin.
- Use a few drops on the scalp, not the whole head of hair, to avoid greasiness.
- Wash it out regularly to prevent buildup, especially if you apply it overnight.
- Protect your pillowcase if you leave it on overnight.
- See a dermatologist for ongoing hair loss rather than relying on an oil.
Pros and cons
What owners love
- Very well rated at major retailers
- Pleasant minty scent and scalp feel
- Leaves many users' hair softer and shinier
- Good value for a small bottle that goes a long way
What owners complain about
- No clinical evidence that this product grows hair
- Research on rosemary oil itself is small and unreplicated
- Can feel greasy and build up
- Essential oils may irritate sensitive scalps
- Some reports of leaks and extra shedding
Other options users compare
These are scalp products often compared with Mielle's rosemary oil. None of them is a substitute for medical advice on hair loss.
| Product | Known for | Consider it if… | |
|---|---|---|---|
| Mielle Rosemary Mint Scalp & Hair Strengthening Oil (this review) | Multi-oil blend with rosemary and mint | You want an enjoyable scalp and hair oil | See on Amazon |
| The Ordinary Multi-Peptide Serum for Hair Density | Leave-on peptide scalp serum | You want a non-oily scalp serum instead of an oil | See on Amazon |
| Kitsch Rosemary Oil | Rosemary scalp and hair oil | You want another rosemary oil option to compare | See on Amazon |
Want a minty oil for your scalp-care routine?
Check current sizes and prices on Amazon.
Frequently asked questions
Does Mielle Rosemary Mint oil grow hair?
There is no clinical study of this product. The main study on rosemary oil was small, men-only and had no placebo group, and dermatologists call the evidence limited. Some users report growth, but that is not proof.
Is rosemary oil as good as minoxidil?
One 2015 study found similar results to the weaker strength of minoxidil after six months, but it has not been replicated. Minoxidil has a much stronger evidence base.
How long before I see results?
A dermatologist told WebMD it may take about six months to see meaningful change from rosemary oil, if it helps at all.
Can it cause shedding or irritation?
A few users report shedding, and dermatologists warn essential oils can irritate sensitive scalps. Patch-test first and stop if irritation occurs.
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Sources we analyzed
- Walmart: Mielle Rosemary Mint oil — rating, description and review themes
- Ulta: Mielle Rosemary Mint oil — rating, recommend rate, ingredients and reviews
- Thing Testing: Mielle Organics reviews — user comments on the oil
- Acibadem: Rosemary oil vs minoxidil, read carefully — 2015 study details and limitations
- Marie Claire: Rosemary oil for hair growth — dermatologist views and cautions
- WebMD: Can this common herb help grow hair? — 2015 study summary and dermatologist advice
Figures reflect each source as of October 11, 2026 and may change. We summarize owner feedback in our own words and do not reproduce retailer reviews.