How to use castor oil for eyelash growth?

Imed Bourogaa
2026-04-07T04:54:19-03:00

Castor oil is often presented as a natural treatment for longer, stronger, and thicker eyelashes. But the real question is simple: does it really work?

The honest answer is that castor oil does not scientifically provenly grow eyelashes, but it can help to nourish and protect them, and reduce breakage. Used correctly, it can therefore improve the appearance and overall look of eyelashes. How to use castor oil for eyelash growth?

1. Does castor oil really make eyelashes grow?

To date, there is no solid scientific evidence to show that castor oil directly stimulates eyelash growth.

However, it can:

moisturize eyelashes,

make them more supple,

reduce breakage,

give them a shinier and denser appearance.

In other words, castor oil does not transform eyelashes overnight, but it can help them stay in better condition.

2. Why is castor oil used for eyelashes?

Castor oil is popular because it is rich and thick, allowing it to coat eyelashes well. It notably contains ricinoleic acid, a component often associated with its nourishing properties.

Its main benefit for eyelashes is therefore primarily cosmetic: it helps limit dryness and protect the eyelash fiber.

3. How to use castor oil on eyelashes

Step 1: Clean your eyelashes

Before any application, completely remove makeup and clean your eyelashes. They must be clean and dry.

Step 2: Use a clean applicator

The ideal is to use:

a clean mascara brush,

or a cotton swab.

Avoid using an old, uncleaned mascara tube.

Step 3: Apply a very small amount

Apply a thin layer of castor oil to your eyelashes, as if applying mascara.

Do not apply too much, as excess can run into the eyes and cause discomfort.

Step 4: Leave on

Leave on overnight, then rinse in the morning with lukewarm water if necessary.

Step 5: Be consistent

To observe an aesthetic effect, application must be regular, for example a few times a week for several weeks.

4. Important precautions

Castor oil is natural, but that doesn't mean it's suitable for everyone.

Watch out for:

eye irritation,

redness,

sensation of discomfort,

allergic reaction.

Good practices:

do a patch test on a small area of skin before first use,

use cosmetic grade oil,

avoid direct contact with the eye,

stop immediately in case of discomfort.

5. What to expect?

It is important to be realistic.

What castor oil can do:

improve the appearance of eyelashes,

make them shinier,

limit breakage,

give the impression of fuller eyelashes.

What it cannot promise:

rapid growth,

guaranteed lengthening,

identical results for everyone.

Castor oil is therefore a maintenance treatment, not a miracle product.

6. Conclusion

Castor oil can be a good ally for taking care of your eyelashes, provided it is used with caution and with realistic expectations. It does not provenly make eyelashes grow, but it can help to nourish, strengthen, and improve their appearance.

If your goal is to have naturally well-groomed eyelashes, it can be part of a simple and effective routine.