Castor Oil for Eyelash Growth – Here’s What Studies Actually Say (2023)

Who doesn’t dream of having long, thick, and dark eyelashes? It is widely assumed that the stature of lashes makes your eyes look gorgeous. But not everybody is fortunate to have them.

castor oil benefits for eyelashes

For those who missed out on having such beautiful eyelashes, there are many natural remedies capable of letting you achieve it. For instance, castor oil is believed to be effective in growing and thickening eyelashes.

castor oil for eyelashes infographic

What Research Has to Say About Effectiveness of Castor Oil for Eyelash Growth

There are currently no specific studies on the effectiveness of castor oil for eyelash growth. Hence, it is difficult to ascertain the actual effectiveness of this natural oil for this purpose. Nevertheless, there is data that suggests that the application of castor oil may improve the overall health of eyelash hairs due to the properties of its constituents. Let us look at this in greater detail.

This article in the International Journal of Science and Research lists Ricinoleic acid as the main ingredient of castor oil. Ricinoleic acid is a monounsaturated omega-9 fatty acid with high levels of triglycerides. As a result, it has excellent moisturizing properties, which can help to improve the strength and flexibility of hair strands.

Another 2015 study explicitly links Ricinoleic acid to reduced hair loss, which is a promising outcome when it comes to the overall health of eyelash hair. However, you should keep in mind that there is no direct evidence supporting this assumption. So, we can only speculate about its actual effectiveness.

While castor oil can improve the luster and shine of eyelashes, we cannot confirm that it enhances eyelash growth. Claims that it increases hair growth are purely anecdotal. However, by moisturizing and strengthening eyelashes, castor oil can help them appear healthier and more attractive.

Nutrient Rich Castor Oil

Let us see what the nutrients present in it, which makes them competent enough in growing eyelashes are.

Castor oil is comprised of vitamin E, minerals, proteins, and antibacterial properties. Apart from that, they are also rich in triglyceride variant of fatty acids.

Castor oil can strengthen and hydrate the eyelashes, as it contains fatty acids with excellent abilities to moisturize hair strands. This, in turn, can provide an environment that allows eyelashes to thrive in.

Many people think that the routine usage of castor oil has incredibly improved the quality of their eyelashes. Although there is no scientific evidence to back these claims, likely, the improvement in the shine and strength of eyelashes due to castor oil application makes them appear longer and thicker.

Best Time to Apply Castor Oil on Eyelashes

It is good to apply castor oil on to the baseline of your eyelashes. The best solution for this will be to use an eyeliner brush.

The best time to apply castor oil is at night, preferably a couple of hours before bedtime. While it is perfectly fine to use them during day time, there is a significant advantage in applying them at night as this allows more time to saturate and start the process, which aids in growing eyelashes. Care must be taken to avoid them from getting in contact with the eyes, and in case it happens, you must wash your eyes immediately as this may cause extreme irritations.

Did you know?  The longest eyelash on record was 2.75 inches long. A guy holds this record!

You can start your morning by removing castor oil from eyelashes. For this purpose, you can either use a makeup remover or water. But make sure you don’t rub or pull on your lashes to avoid losing eyelashes.

6 Steps to Apply Castor Oil on Eyelashes

Follow these below mentioned steps to effectively make use of castor oils to promote the growth of eyelashes.

  • Clean your face with water and remove any traces of makeup, especially from eyes.
  • Make sure to use cold-pressed castor oil because they tend to be pure and natural kind.
  • Take an eyeliner brush and slowly dip it into the castor oil, make sure the brush doesn’t carry oil in excess amount.
  • Now with the help of that brush, apply the oil carefully on your lashes.
  • It is better to apply them at night before you sleep. Leave it on for the entire night for the best results.
  • In the morning, with the help of a makeup remover, you can remove the oil from eyelashes.

Depending on the individual needs and preferences, you can make changes in the steps mentioned above. It might take some time to obtain the results, so it is better to use castor oil on eyelashes on a routine basis.

Side Effects of Castor Oil

The number of people who have enjoyed these plentiful benefits may outnumber the number of people who had succumbed to the side effects caused by over usage of castor oil.

At a moderate level, castor oil works fine without any side effects. But still, it is not recommended for pregnant or lactating women to take castor oil orally as this may lead to inflammatory intestinal diseases or abdominal pain.

castor oil for eyelashes growth

When it comes to using them along with eyebrows or eyelashes, care must be taken not to let them get into contact with the eyes. Any such contact may lead to extreme irritation of the eyes, causing redness or intense pain.

How To Choose The Best Castor Oil?

The first and foremost thing that you need to keep in mind is that the purchased oil is the correct type of castor oil. You should check the label and the stickers to see whether it is 100% cold-pressed or cold processed as these are the primary symbols of a pure and natural product.

3 Popular Castor Oils, According to Reviews and Ratings:

The best thing will be to check out a local health food store or an online store to find out the castor oil of your choice.


Although there are several claims about castor oil increasing eyelash growth, the scientific evidence supporting this is unavailable. Nevertheless, the chemical constitution of castor oil makes it a fantastic moisturizer for hair strands. So, you should be able to improve the overall health and strength of your eyelashes by consistently using this age-old remedy. And if this helps your eyelashes appear more luscious, wouldn’t it be great?

I hope you enjoyed reading this article. Have you ever tried using castor oil before? If so, let us know your feedback on its effectiveness. If you would like to share any other natural remedies for improving eyelashes, please feel free to do so in the below comment box.


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