Dilute rosemary essential oil with a carrier oil such as coconut, jojoba, olive, or argan oil
Use about 2 to 5 drops of rosemary oil per 1 tablespoon of carrier oil
Apply the mixture directly to the scalp
Massage the scalp gently for 5 to 10 minutes
Leave it on for at least 30 minutes or overnight if well tolerated
Wash hair with a mild shampoo
Use 2 to 3 times per week
Add a few drops to your shampoo or conditioner before use
Mix with a scalp serum or hair oil for regular application
Do a patch test before first use
Avoid using undiluted rosemary oil on the scalp
Stop use if irritation, itching, or redness occurs
Use consistently for several months for best results