Castor oil has long been known for its many uses in cosmetics and natural health. It is believed to have moisturizing and anti-inflammatory properties and even to stimulate eyelash growth. But when it comes to our eyes, such precious and delicate organs, it is essential to separate myth from scientific fact.
What is castor oil?
Castor oil is extracted from the seeds of the Ricinus communis plant. It is rich in ricinoleic acid, a fatty acid with emollient and anti-inflammatory properties. It is often found in skin, hair, and eyelash care products.
Castor oil and eyelashes
Many people apply castor oil to the base of their eyelashes in the hope of making them longer and thicker. Although some people report an improvement, there is a lack of solid scientific evidence to confirm a direct effect on growth. What is certain is that its moisturizing action can strengthen eyelashes by making them less brittle, giving the impression of fuller lashes.
Castor oil and dry eyes
Some over-the-counter eye drops contain a low concentration of castor oil. In this medical context, castor oil can help stabilize the tear film, improve lubrication, and reduce tear evaporation. Studies have shown a beneficial effect in some cases of mild to moderate dry eye.
However, it is important to distinguish between pure castor oil sold in bottles for cosmetic use and specially formulated ophthalmic products. Applying raw oil directly to the eyes is not safe.
Risks and precautions
Even though it is natural, castor oil can pose risks if used without caution:
- Irritation: raw oil can cause redness, burning, or allergic reactions.
- Contamination: an open bottle applied near the eyes can introduce bacteria.
- Misuse: confusing a cosmetic oil with a medical preparation can cause eye complications.
How to use it safely?
- For eyelashes: apply only to the eyelashes (never directly into the eye), with a clean brush, in the evening, and in small quantities.
- For dry eyes: opt for artificial tears that already contain castor oil in a sterile and safe formula.
- Always consult an optometrist before trying home remedies involving the eyes.
Castor oil can have beneficial effects on eyelashes and, in a controlled medical setting, on dry eyes. But if applied improperly, it can also cause irritation or infection. If you want to enjoy its benefits, be sure to do so with caution, and above all, use products that are suitable for the eyes.
If you have any questions about your eye health, talk to your trusted optometrist.
