Rosemary hair & scalp oil
Strength starts at the root.
A nutrient-dense oil serum for the scalp your hair grows from. Eleven plant oils. Nothing extra.
The line
Best sellers
The difference
Why Jahmear
Short ingredient lists, certified sourcing, and nothing added to make the bottle look busier than it is.
Because healthy hair shouldn't cost you clean ingredients.
100%
Natural origin of total
69%
Organic of total
Simple. Bold. Luxury.
Pure drops. Real results.
Sunflower and castor to carry. Argan, avocado and sweet almond to soften. Rosemary and peppermint to wake the scalp up. Eleven plant oils, one bottle, no filler — that's the whole idea.
Shop the oilClean. Simple. Effective.
The key ingredients
Rosemary leaf oil
Stimulates the scalp and supports the environment healthy hair grows from.
Peppermint oil
A cool, clean tingle that signals circulation at the root.
Argan & avocado
Rich, fast-absorbing oils that restore shine to dry or brittle strands.
Nettle leaf extract
A traditional scalp tonic, used for centuries for hair resilience.
Independently verified
Proof, not promises
We're new, so we're not going to show you reviews we don't have yet. Here's what can be checked instead.
COSMOS Organic certified
Audited against the COSMOS Standard by an independent body — not a self-declared claim. Certification reference printed on every carton.
Natural origin and organic content
100% natural origin of total, 69% organic of total. Both figures are verified as part of the COSMOS audit.
Every ingredient listed
The complete INCI list is on the carton and on this site. No proprietary blends, no hiding behind the word fragrance.
EU CPNP 5132700 · UKCP-39902922 · Certification details in full at cosmos.ecocert.com
Good questions
Frequently asked
Two to three times a week. Massage a few drops into the scalp, leave for at least 15 minutes, then wash as normal. You can also leave it in overnight for a deeper treatment.
Not if you use it as directed. It's a lightweight carrier base — sunflower and decyl cocoate — that absorbs rather than sits. Start with 4–6 drops and adjust.
Yes. There are no sulfates, silicones or synthetic strippers in the formula, so it won't lift or dull colour.
All of them. It's a scalp treatment first — dry, oily, curly, coily, straight, fine or thick all benefit from a healthier root environment.
Most people notice less flaking and more shine within the first few weeks. Changes in density follow the hair growth cycle, so give it a full three months before you judge it. Results vary from person to person.
Free US shipping on orders over $60. Orders are dispatched within one business day and typically arrive in 5–10 business days. Not happy? You have 30 days from delivery — see our refund policy for the details.