Created from the castor bean, this oil is packed with a number of nutrients, antioxidants, and essential fatty acids that provide skin and hair-boosting benefits when used in certain cosmetic products or applied topically.
Castor oil has historically been used to promote hair health; regular use on your eyebrows may also encourage hair growth. This is because the oil is said to improve circulation and encourage cell regeneration. It is also highly moisturizing, something that is conducive to new, healthy hair growth.
To use castor oil on your eyebrows and improve their growth, use a cotton swab or a clean mascara spoolie to swipe the oil over your brows. Massage it in and allow the oil to stay overnight, wash off in the morning if any is left. Make sure to perform a patch test with this oil before widespread use on your brows.