Applying castor oil just once a month can boost hair growth up to five times the usual rate.

It can moisturize a dry, irritated scalp.

Castor oil’s antibacterial and antifungal properties can reduce dandruff.

Beyond stimulating hair growth, rosemary essential oil is used to prevent premature graying and dandruff.

It may also help dry or itchy scalp.

Rosemary oil treats androgenetic alopecia by preventing a byproduct of testosterone from attacking your hair follicles.

Peppermint oil can cause a cold, tingling feeling when it increases circulation to the area it’s applied to.

This can help promote hair growth during the anagen (or growing) phase.

Lavender has antimicrobial properties, which helps to prevent bacteria and fungi growing.

It nourishes hair and encourages growth of healthy, strong hair.

Apply a few drops to your scalp, or areas where hair is thinning, twice per day and gently massage into the skin.