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Castor oil

also Ricinus communis

Thick plant oil used in hair care

Castor oil is a vegetable oil pressed from castor beans, the seeds of the plant Ricinus communis. The seeds are 40 to 60 percent oil. It is a colourless or pale yellow liquid with a distinct taste and odor. Its boiling point is 313 °C (595 °F) and its density is 0.961 g/cm3. It includes a mixture of triglycerides in which about 90 percent of fatty acids are ricinoleates. Oleic acid and linoleic acid are the other significant components.

Read “Castor oil” on Wikipedia and its adverse effects · text from Wikipedia, CC BY-SA 4.0

Information, not medical advice. Talk to a licensed doctor or pharmacist before starting or changing a treatment.

Research 9

  1. Coconut, Castor, and Argan Oil for Hair in Skin of Color Patients: A Systematic Review.2022 · 26 citations
  2. Use of Castor Oil in Dermatology: A Narrative ReviewCureus · 2026 · 2 citations
  3. An Exploratory Preclinical In Vivo Pilot Study Evaluating the Hair Growth–Promoting Effects of Rosmarinus officinalis and Ricinus communis CombinationBioMed Research International · 2026
  4. Rosmagain™ as a Natural Therapeutic for Hair Regrowth and Scalp Health: A Double-Blind, Randomized, Three-Armed, Placebo-Controlled Clinical TrialCureus · 2025 · 4 citations
  5. Commonly used hair oils in the Black community: a narrative review in their use to treat androgenetic alopeciaInternational Journal of Dermatology · 2023 · 12 citations
  6. Hair Oils May Worsen Seborrheic Dermatitis in Black PatientsSkin Appendage Disorders · 2023 · 3 citations
  7. Formulation and Artificial Sebum Effects on the Percutaneous Absorption of Zinc Pyrithione through Excised Human SkinSkin Pharmacology and Physiology · 2019 · 9 citations
  8. Prevalence of Tinea capitis in school going children in Kolkata, West BengalJournal of Natural Science Biology and Medicine · 2012 · 34 citations
  9. Antibacterial Host–Guest Intercalated LDH-Adorned Polyurethane for Accelerated Dermal Wound HealingACS Applied Bio Materials · 2022 · 15 citations
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Posts 20

  1. Old spice thickening treatment with castor oil is amazing!Reddit · 10 Oct 2024
  2. Oral Castor Oil and your experienceReddit · 19 Sept 2022
  3. How does castor oil improve hair growth?Reddit · 22 Apr 2022
  4. Could someone educate me on Castor Oil?Reddit · 2 May 2021
  5. Jamaican black castor oil and coconut oil. What are your thoughts and opinions?Reddit · 11 Jul 2020
  6. Massive shed after oral castor oil - can I just stop it?Reddit · 21 Jan 2022
  7. Anyone using oral castor oil in their stack?Reddit · 7 Jun 2024
  8. Oral Castor Oil Experiment Day #1Reddit · 5 Oct 2022
  9. Anyone else try oral Castor oil?Reddit · 21 Oct 2018
  10. Castor Oil, any users? Any tip if it will work or just a waste of timeReddit · 8 Apr 2024
  11. Shedding phase oral castor oilReddit · 16 Nov 2019
  12. Does castor oil block dht?Reddit · 6 Oct 2020
  13. Anyone seen results from rosemary and castor oil combined?Reddit · 9 Dec 2023
  14. Almost 2 weeks on peppermint oil and castor oil. Front hairline sees new baby hairs.Reddit · 31 May 2018
  15. Anecdotal experience: Hair regrowth with castor oilReddit · 29 Sept 2017
  16. Warning About Castor OilReddit · 29 Mar 2016
  17. Oral Castor Oil Experience?Reddit · 18 Jun 2020
  18. 1 Month oral castor oil progressReddit · 23 May 2020
  19. 8 months progress fin/min/dut/castor oilReddit · 15 Jun 2021
  20. Personal experience with oral castor oil - definitely worksReddit · 12 Aug 2022
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