Overview
The speaker reviews scientific evidence regarding the use of castor oil for eye health, specifically its effects on dry eyes, eyelids, eyelashes, under-eye bags, cataracts, and floaters, and addresses safety concerns associated with its use.
Castor Oil for Dry Eyes
- Castor oil is a common inactive ingredient in many over-the-counter eye drops for dry eyes.
- It reduces tear film evaporation and helps lubricate eyelid movement.
- Studies show that using diluted castor oil eye drops (not 100% pure) improves dry eye symptoms and tear film stability.
- Benefits extend to meibomian gland dysfunction, a leading cause of dry eye.
Castor Oil for Eyelid Health (Blepharitis)
- A 2021 randomized study showed that applying 100% cold-pressed castor oil to the eyelids twice daily improved blepharitis symptoms.
- Observed improvements included reduced lid margin thickness, fewer visible blood vessels, less eyelash loss, and decreased crusting.
- The study was small but demonstrated positive results for eyelid inflammation.
Castor Oil for Under-Eye Bags and Eyelash Growth
- No direct studies were found supporting castor oil for under-eye bags; possible anti-inflammatory benefits are speculative.
- Thereās no research confirming castor oil promotes eyelash growth, though its chemical structure is similar to substances that do.
- Some evidence suggests it may support eyelash health by reducing loss, but not actual growth.
Castor Oil for Cataracts and Eye Floaters
- No scientific evidence supports the use of castor oil for cataracts or eye floaters.
- Castor oil likely cannot penetrate deeply enough into ocular tissues to affect these conditions.
- Improvements reported by users are probably due to relief from dry eye, not changes to cataracts or floaters.
Safety Concerns and Usage Recommendations
- Eye drops for dry eyes use only diluted castor oil (~2%), not pure oil.
- 100% castor oil is very thick, causes blurry vision, and doesn't mix well with tears.
- High concentrations can irritate and damage the conjunctiva.
- Storage conditions can lower pH and increase eye irritation risk.
- Store-bought castor oil is not sterile or regulated, increasing infection risk.
- Always consult a doctor before using castor oil in or near the eyes.
Recommendations / Advice
- Use only diluted castor oil formulated specifically for eyes and avoid applying 100% castor oil directly to the eyes.
- Discuss any home treatments with a healthcare professional before beginning.
Questions / Follow-Ups
- Which over-the-counter eye drop brands contain castor oil?
- What are the speakerās recommended eye drops for dry eyes?