7 truths about castor oil and eyelash growth that experts want you to know

That trendy $5 bottle of castor oil might not be the miracle lash solution you’ve been searching for, but here’s what it actually does
castor oil lashes
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Everyone and their grandma seems to be slathering castor oil on their lashes lately, hoping to achieve that Disney princess look without dropping hundreds on extensions, but before you jump on this trending natural beauty bandwagon, there’s some tea you need to know about what this thick sticky oil can and can’t do for your lash game.

What’s actually in this mystery oil

Let’s get real about what castor oil really is. This isn’t some fancy scientifically engineered formula, it’s literally just oil squeezed from castor beans that grow in places like Africa and India. While it might sound exotic, people have been using this stuff in their hair care routines since probably before your great-grandma was born.


The 7 things nobody tells you about castor oil and lash growth

  1. The science behind castor oil is shakier than your morning coffee order. Despite what your favorite beauty influencer claims, there’s no solid proof this stuff actually makes your lashes grow.
  2. That shine you’re seeing? It’s more smoke and mirrors than actual growth. The oil coats your lashes making them look fuller and shinier, kind of like how hair conditioner works.
  3. Your wallet will thank you compared to other lash treatments, but cheaper isn’t always better. While a bottle costs less than your daily coffee habit, that doesn’t automatically make it your lash’s best friend.
  4. The active ingredient, ricinoleic acid, might actually do something to your hair follicles, but the keyword here is “might.” Scientists are still giving this one the side-eye.
  5. Unlike those fancy lash serums, castor oil doesn’t have any clinical trials backing up its growth claims. It’s basically running on vibes and TikTok testimonials.
  6. The application process is trickier than it looks. One wrong move and you’ll be seeing everything through a vaseline filter for the next hour.
  7. Some people’s eyes straight up hate this stuff, leading to more drama than a reality TV show finale.

The good news you actually want to hear

While castor oil might not turn you into Bambi overnight, it’s not totally useless. Think of it more like a really good conditioning treatment for your lashes. It can make them look healthier and shinier, which might be enough if you’re just trying to up your natural lash game.

Let’s also talk about what could go wrong, because yes, there’s always a catch. Your eyes are super sensitive, and castor oil can start some serious drama if you’re not careful. We’re talking irritation, allergic reactions, and vision getting blurrier than your last late-night text.


If you’re pregnant or breastfeeding, you might want to sit this trend out. There’s not enough research to say it’s totally safe, and nobody wants to be a guinea pig with their eye health.

How to actually use this stuff without messing up

If you’re still determined to give castor oil a shot, here’s how to do it without ending up in an eye-related fiasco. First, get yourself a clean mascara wand or special applicator. Don’t even think about using your fingers or that crusty old mascara wand you found in the bottom of your makeup bag.

Apply it like you’re painting a masterpiece, not finger painting in kindergarten. A little goes a long way, and you want to focus on the base of your lashes where the growth happens. Think of it like watering a plant at the roots, not spraying the leaves.

What the pros want you to try instead

If you’re serious about lash growth, you might want to consider products that actually have some science behind them. Yes, they’re more expensive than castor oil, but they’re also more likely to give you the results you’re dreaming about.

Look for lash serums that contain proven ingredients like peptides and biotin. Some even include castor oil in their formula, but in a way that’s been tested and won’t make your eyes hate you.

The bottom line on this beauty trend

While castor oil might not be the miracle lash grower that social media makes it out to be, it’s not completely worthless either. If you’re looking for a budget-friendly way to condition your lashes and maybe make them look a bit more luxurious, go for it. Just keep your expectations lower than your weekend brunch bill.

Remember, sometimes the best solution isn’t the trendiest one. Whether you decide to try castor oil or stick to your trusted mascara, the most important thing is keeping your eyes safe and healthy. Because let’s be real, no amount of lash length is worth compromising your eye health.

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