Skim through

What it does: antioxidant, antimicrobial/antibacterial  

Also called: rosemary leaf oil, rosmarinus officinalis leaf oil

The science

Rosemary is a culinary and healing herb. This woody perennial is native to the Mediterranean region, where it’s been used as food and medicine for centuries. Rosemary is frequently found in essential oil form. Essential oils are highly concentrated and distilled extracts of volatile plant compounds. These are used for cooking, cleaning, beauty, health, and other purposes.

Rosemary essential oil’s health uses range from antioxidant benefits and anti-inflammation to memory enhancement and more.

Benefits for your hair

Anti-inflammatory properties 

As an antioxidant, rosemary essential oil has anti-inflammatory properties which are beneficial for scalp health. It can help with dandruff and a dry, itchy scalp.

Encourages hair growth & prevents hair loss

Rosemary essential oil strengthens circulation to the scalp, which encourages hair growth. It could also prevent hair follicles from being starved of blood supply and leading to hair loss.

TLDR

Rosemary essential oil has been used by many to promote hair growth successfully. This, paired with its antioxidant properties, makes the oil great for all hair types. It contains several fragrant components, including the well-known irritant, camphor (around 15%). It has a nice smell, is a potent antioxidant and it's also an antimicrobial agent.