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According to MedicalNewToday, Castor oil can provide benefits for the face and skin.
Acne: The antimicrobial and anti-inflammatory properties of castor oil make it useful in reducing acne. The ricinoleic acid produced by castor oil can inhibit the growth of bacteria that causes acne.
Texture: Castor oil is also rich in other fatty acids that can enhance smoothness and softness when applied to facial skin.
Complexion: The fatty acids in castor oil can also promote the growth of healthy skin tissue, making it helpful in restoring uneven skin tones.
Sensitive skin: Castor oil has a low comedogenic score, which means it is unlikely to clog pores in the skin, making it appropriate for use on sensitive skin with a low risk of developing blackheads.
Inexpensive: Skincare products, and in particular facial creams and oils, can be very expensive. Castor oil is relatively low-cost and shares many of the similar properties, such as promoting skin complexion or moisture.
More information here: https://www.medicalnewstoday.com/articles/319844.php