Castor oil is most commonly used as a laxative. But castor oil’s natural antiviral and antimicrobial properties make it a popular treatment for skin problems known as dermatosis as well as fungal infections. It’s also used for hair growth.
Some people use castor oil to grow longer hair or to treat hair loss, also known as alopecia. It’s marketed as a treatment for dry scalp and other scalp conditions as well.
While the average human hair follicle grows just over a centimeter a month, some claim anecdotally that using castor oil once a month can spur growth three to five times the normal rate. There is no clinical evidence to support this, however.
If you still want to try castor oil on your hair, here’s a safe, easy at-home method. You’ll need the following supplies:
castor oil
an old T-shirt
rubber gloves
applicator brush
comb
shower cap
large towel
Source: Healthline