Castor oil, or Roghan-e-Arandi, is a thick oil that can give hair a coated, glossy feel. Herby Factor supplies Ricinus communis oil as a cosmetic product labelled for external use only. Its conditioning role should be separated from the dramatic hair-growth claims often found online.
What does the research support?
A 2022 systematic review of coconut, castor and argan oils found weaker evidence for castor oil improving hair quality through increased lustre, and no strong evidence supporting its use for hair growth. A shinier or more coated strand is therefore a more realistic expectation than guaranteed new follicles or a reversal of thinning.
Thickness affects the routine
A viscous oil can be easy to overapply. If the labelled use suits your needs, assess a small amount on hair lengths and consider how you will wash it out. More oil can simply leave a heavier residue. Do not interpret the immediate appearance of fuller, coated hair as proof that growth has changed.
Keep it away from the eyes
A bottle sold for general cosmetic care is not automatically an eye-safe lash treatment. Avoid putting castor oil into the eyes or on the wet inner eyelid margin. Ask an eye-care professional about suitable products for that area. Stop use if irritation occurs, and seek medical advice for persistent or sudden hair loss rather than relying on a grooming oil.
Buy according to the intended use
This product is not offered here as a laxative or a drink. Keep it out of children's reach and follow its storage directions. Salons and cosmetic businesses can ask for the ingredient specification and available batch information, then test the amount and washout in their own intended application before ordering larger quantities.
Educational information only; this article does not provide a diagnosis or an individual treatment plan.
Sources and further reading
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