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Formula index · scalp
Rosemary oil for hair
A scalp concentrate: use it diluted and as a course.
Cosmex rosemary oil is 100% rosemary oil in a 30 or 50 ml bottle. It is a concentrate, so never apply it neat: mix 2–4 drops into 10 ml of carrier oil or add 3–5 drops to your shampoo.
How to use
Massage the blend into the scalp, not the lengths, for 3–5 minutes and leave for 30–60 minutes before washing, 2–3 times a week. Patch-test first. In a 2015 Skinmed trial rosemary oil gave hair-count gains comparable to 2% minoxidil after six months; judge results after 3–4 months at the earliest.
Frequently asked questions
Can I apply rosemary oil undiluted?+
No. It is a concentrate: use 2–4 drops per 10 ml of carrier oil or 3–5 drops in shampoo.
How often?+
2–3 times a week, as a course.
Also from Cosmex
In the Cosmex Lab journal