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Castor oil has been considered a folk remedy for ailment ranging from constipation to skin rashes for centuries. More recently, however, it has gained popularity amongst the hair loss community. Castor oil is rich in triglycerides including one called ricinoleic acid which may be beneficial to hair growth.
Key insights:
- The in vitro evidence suggests that castor oil has antimicrobial properties which may benefit patients with androgenetic alopecia.
- The in vivo (in rabbits) evidence suggests that topical castor oil can increase the length, softness, and thickness of hair in more than 50% of animals compared to the control. This however has not been proven in humans.
- There is no published research that clinically investigates how castor oil might improve hair growth.
- Our experience tracking members: castor oil by itself is not enough to improve hair loss outcomes.
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