If you've typed "Which lash serum is the best?", "Does castor oil grow lashes?" or "Which lash serum actually works?" into Google (or asked ChatGPT), you're not alone.
With thousands of videos, reviews and opinions online, it's easy to end up more confused than when you started.
Some people swear by castor oil.
Others won't go a day without their lash serum.
So, what's the difference? And if your goal is longer, fuller, healthier-looking lashes, which one should earn a place in your beauty routine?
Let's get into it.
Why Is Castor Oil So Popular?
Castor oil has been a beauty cupboard staple for years.
It's often used on hair, brows and lashes because it's rich in fatty acids and helps condition the hair.
It's affordable.
It's easy to find.
And because it's a natural oil, it's become one of the most talked-about DIY beauty products on social media.
If you're looking to improve the condition of your lashes, castor oil can certainly help keep them feeling nourished.
But there's one thing it's often given credit for that isn't quite accurate…
Can Castor Oil Actually Make Your Lashes Grow?
This is where social media and science don't always agree.
Although castor oil is brilliant at conditioning lashes, there isn't strong scientific evidence to show that it directly stimulates lash growth.
What it can do is help reduce dryness and minimise breakage.
Healthier lashes are less likely to snap or fall out prematurely, which may make them appear fuller over time.
So while castor oil can improve the condition of your lashes, it's not specifically designed to support the appearance of lash growth.
Why More People Are Choosing Lash Serums
A lash serum has one job.
Your lashes.
Unlike castor oil, a quality lash serum is formulated specifically to support the appearance of longer, fuller and healthier-looking natural lashes.
At Feelfi, that's exactly what we've created.
Our prostaglandin-free lash serum is powered by peptides, biotin and caffeine, ingredients chosen to support healthier-looking natural lashes while fitting effortlessly into your everyday routine.
No heavy oils.
No sticky residue.
No complicated application.
Just one swipe along your upper lash line before bed.
That's it.
Lash Serum vs Castor Oil
Let's keep it simple.
| Feature | Castor Oil | Feelfi Lash Serum |
|---|---|---|
| Specifically formulated for lashes | ✘ | ✔ |
| Supports the appearance of longer, fuller-looking lashes | ✘ | ✔ |
| Helps condition lashes | ✔ | ✔ |
| Powered by targeted ingredients | ✘ | ✔ Peptides, Biotin & Caffeine |
| Lightweight application | ✘ | ✔ |
| Easy to apply in seconds | ✘ | ✔ |
| Non-greasy formula | ✘ | ✔ |
| Vegan & cruelty-free | Depends on brand | ✔ |
| Prostaglandin-free | ✔ | ✔ |
| Fits effortlessly into your evening routine | ✘ | ✔ |
Which Lash Serum Is The Best?
It's one of the most searched beauty questions online.
The truth?
The best lash serum is one you'll actually use consistently.
Look for a formula that:
- Is prostaglandin-free if that's important to you
- Contains ingredients with a purpose, such as peptides and biotin
- Fits easily into your daily routine
- Is lightweight and comfortable to wear
- Comes from a brand that's transparent about what's inside
That's exactly why we created Feelfi.
No complicated routine.
No unrealistic promises.
Just a straightforward serum designed to support healthier-looking natural lashes.

