Castor Oil Hair & Brow Serum
Traditional overnight conditioning treatment
Preliminary evidenceHerbs in this remedy
About this remedy
Castor oil's thick, ricinoleic-acid-rich profile makes it one of the most popular folk treatments for conditioning hair, brows, and lashes. Clinical evidence for hair growth specifically is preliminary, but the oil is a proven humectant — it locks moisture into the hair shaft, reduces breakage, and gives the lashes and brows a glossier, fuller appearance. Cold-pressed Jamaican black castor oil is the most prized variety. A simple, single-ingredient ritual that has stood the test of time.
Preparation
Warm 1–2 teaspoons of cold-pressed castor oil between palms. Massage gently into scalp, brows, or lashes using a clean spoolie or fingertip — taking care to avoid the eyes themselves. Wrap hair in an old towel or silk scarf if applying to the scalp.
Dosage
1–2 times weekly, left overnight, then washed out with shampoo
Cautions
Topical use only. Avoid getting in eyes. Patch test on the inner arm first — castor oil can cause irritation in sensitive individuals. Choose cold-pressed, hexane-free oil; castor oil stains fabric.
Research
Andreassi et al., Skin Pharmacol Physiol, 2007 — Castor oil and skin conditioning; traditional use
Frequently asked questions
What is Castor Oil Hair & Brow Serum used for?
Traditional overnight conditioning treatment. Castor oil's thick, ricinoleic-acid-rich profile makes it one of the most popular folk treatments for conditioning hair, brows, and lashes. It falls under Skin Care.
How do you make Castor Oil Hair & Brow Serum?
Warm 1–2 teaspoons of cold-pressed castor oil between palms. Massage gently into scalp, brows, or lashes using a clean spoolie or fingertip — taking care to avoid the eyes themselves. Wrap hair in an old towel or silk scarf if applying to the scalp.
What is the recommended dosage for Castor Oil Hair & Brow Serum?
1–2 times weekly, left overnight, then washed out with shampoo
Is Castor Oil Hair & Brow Serum safe? Are there any cautions?
Topical use only. Avoid getting in eyes. Patch test on the inner arm first — castor oil can cause irritation in sensitive individuals. Choose cold-pressed, hexane-free oil; castor oil stains fabric.
What is the evidence behind Castor Oil Hair & Brow Serum?
Preliminary evidence. Andreassi et al., Skin Pharmacol Physiol, 2007 — Castor oil and skin conditioning; traditional use