Want to ensure continuous results for your lash transformation? The Diablo Eyelash Serum Duo gives you two full-size serums to maintain your results without interruption.
Our bestselling eyelash serum strengthens and lengthens your natural lashes, while our duo pack ensures you never run out of your essential lash enhancer.
6 months of continuous growth
Clinically proven formula
Perfect for sharing with friends
Safe, gentle & non-irritating
Ophthalmologist formulated
One swipe along your lash line each night. That's it.
1. Cleanse your eyelids and remove all makeup, using an oil-free cleanser.
2. Apply one thin line of Diablo Eyelash Serum along your upper lash line, like eyeliner.
3. Let it dry, and leave it to work overnight.
Use nightly for 90 days, which is roughly one full bottle. Most people notice a difference around 8 weeks. After 90 days, drop to 3 to 4 nights a week to maintain.
Use the whole bottle. If your lashes aren't fuller and longer, we'll refund you in full.
Lashes grow on a cycle, and that cycle takes months. Most people see a visible difference by 8 weeks, but your lashes aren't done changing until you've finished the bottle. So that's how long we ask you to give it.
Use the serum nightly for 90 days. If you're not happy with your results, email us within 120 days of delivery and we'll refund the full amount you paid.
No return. No photos. No forms.
Free delivery on all orders this week.
You can return your order for any reason within 60 days. See more
★★★★★
"The ONLY lash serum that has actually worked for me."
- Kira P.
Proven Results
94%
of users experienced increased eyelash length & thickness
Key Ingredients
Toxic free and sustainably made. The 100% natural formula is clinically proven to promote longer & thicker eyelashes.
Biotinoyl Tripeptide-1: The super combo, Tripeptide with Biotin, has an impressive impact on eyelash growth making them appear longer, fuller and stronger.
Myristoyl Pentapeptide-17: Penetrates the lashes to stimulate keratin, your hairs natural protein, which is required for healthy eyelash growth.
Oligopeptide-10: Helps support collagen production and improves follicle function, minimising eyelash loss while increasing eyelash thickness.
Builds a foundation for keratin and increases the rate of new follicles, preventing eyelash brittleness and speeding up new eyelash growth.
Responsible for increasing water content and elasticity. B5 prevents early eyelash breakage allowing the eyelash hairs to grow longer and thicker.
An essential vitamin for healthy eyelashes, Tocopherol contains antioxidant properties that protect the eyelashes from mascaras and strong makeup removers.
Just one swipe along your lash line each night is all it takes for longer fuller lashes.
1
Remove any makeup and residue with preferably an oil-free cleanser.
2
Apply one thin line of Diablo Eyelash Serum along your lash line.
3
Apply each night and start seeing results in 2 weeks.
Your Questions Answered
Yes, the serum is safe to use with sensitive eyes. It is free from Allergens, Parabens, Hormones (Prostaglandin), Sulphates, Silicones and Fragrances. However, to be safe we still recommend patch testing before use.
There are no side effects from using Diablo Eyelash serum and it is free from Allergens, Parabens, Hormones (Prostaglandin), Sulphates, Silicones and Fragrances.
You'll start to see changes in as little as 2 weeks. And you'll have visibly longer & thicker lashes after 8-12 weeks of using Diablo Eyelash Serum each night.
Yes, Diablo Eyelash Serum is cruelty-free, vegan friendly and does not contain any animal derived ingredients. None of our products have been tested on animals.
Use the serum nightly for 90 days, which is roughly one full bottle. If you're not happy with your results, email info@diablocosmetics.com with your order number within 120 days of delivery. We'll refund the full amount you paid for your serum or serum bundle.
Nothing to send back. No photos, no forms.
Yes, you’re able to wear makeup, mascara & falses lashes while using the serum. However please ensure your eyelids are clean and free of oil & makeup residue before applying Diablo Eyelash Serum each night.
Yes, our serum is oil-free, making it lash extension and lash lift friendly.
Yes, we’ve tried and tested the serum across all ages, genders, and ethnicities, ensuring everyone can experience longer, fuller, and healthier lashes.
Trusted by 314,937+ Happy Customers
Customer Reviews
Overall rating: 4.5 / 5 from 2465 reviews.
I was sceptical about this product but I must say it is amazing , I would thoroughly recommend it . I have been asked if my lashes were my own on a number of occasions. The pictures really don’t do them justice .
This is a bad photo as so hard to take but before using this I had no lashes at all I mean even with mascara nothing to see. Only been using it two weeks already longer and thicker. Definitely reordering. Thanks. And no nasties in it.
Have use other eyelash serums but this one Beats them all, had a cataract operation and the Doctor cut a clump out of my eyelash and with in two weeks they had grown back 👍🏻👍🏻
I used the eye lash serum and it's honestly amazing! My lashes became longer in just 3 weeks! i'm obsessed xx will continue using it to see how they can get even better!
I have been trying it for the pass month and I can honestly say I see a huge difference and improvement! They have gotten longer and fuller! I absolutely love it!
It’s an amazing serum that has proven growth for my lashes! I am really amazed with this serum. No irritation from this serum, fragrance free. I love it!
The best lash serum, have seen such amazing results especially after having eyelashes extensions constantly. Saved my lashes and I can actually wear mascara now and they’re so long & thick!
Only been using for just over 30 days and I am obsessed with this stuff!!
I am always so skeptical of products like this especially because there obviously no magic cure to make you grow your lashes hair and nails etc but ladies this is it! Well for lashes anyway lol. I can’t say my lashes have thickened just yet but I will continue use and add another review in another month. They are definitely definitely 100% longer just hope it thickens them too but I’m feeling extremely hopeful considering the results so far.
I do have mascara on in the picture to demonstrate the length and I should have took one with mascara to begin with but honestly didn’t even think.
I think the price is just fantastic considering just how good it is. Will definitely be part of my bedtime routine from here on out.
Ladies don’t walk RUN to buy this product you will not be disappointed 🖤
I used the Diablo product for two months. My eyelashes became a little longer and thicker. I think that’s wonderful. I will continue using it to achieve even better results.
Truly unbelievable results. Been using it for about 5/6 wks. I don’t use mascara everyday. But I put mascara on for a wedding and was blown away by my long and thick lashes.
I have really enjoyed using this serum! It brushes on with a brush tip on the lash line and I coat the root of my lashes. It doesn't sting or irritate the eyes at all. I use the Diablo at home lash lift kit and I feel this has helped keep my results for longer. I haven't noticed too much growth but in terms of the overall health of my lashes I think it's done a great job at keeping the curl and strength (less fall out). Overall Im happy with it and continue to use it!
I’ve been using this eyelash growth serum for a while now, and I can honestly say I’m really impressed with the results. My lashes look noticeably longer and a bit fuller, and I’ve seen much less fallout than before.
I like that the formula feels lightweight and easy to apply, and it fits perfectly into my daily routine. Overall, it feels like my lashes are healthier and growing better with consistent use.
Your product worked so quickly for me, I noticed a difference within 2 weeks but by 3 weeks wow. Im very impressed and even bought more to gift to my friends for birthdays/Christmas. Thank you! And well done, its an excellent lash serum
Before and after from left to right. It took me about two months to get through the tube. Wasn’t a big difference, but it was still a difference and I’m happy with it.
It made my lashes thicker and they do not fall as easily. After 4 weeks, I’m now seeing the added length. I have always had very short lashes to begin with and seeing them get thicker is amazing
This is a great, hassle-free product that produces results with consistency. Easy to apply, I've never had any bad reactions to the formula. After a couple months my lashes are noticeable longer, thicker, and I have less fall out. Both photos are after months of consistent use. Highly recommended to all.
This stuff works! This is about 1 month in for me. I accidentally broke off a section of my eyelashes. After using the serum, the are growing back happy, thick, and strong. I will keep using this amazing product.
Diablo Eyelash Serum Review
I’ve been using the Diablo eyelash serum for several weeks and I’m happy with the results. My lashes look stronger, healthier, and slightly longer with consistent use. I like that it feels gentle on the eyes and doesn’t cause irritation. The growth is gradual, not dramatic, but very natural. Overall, a good option if you’re looking for a mild, everyday lash serum that improves lash condition over time.
This lash serum is so incredible! It has now been a little over two weeks since I started this serum and I’ve already been seeing major progress. In the first picture, my lashes are extremely sparse, and there’s even a big patch of them completely gone. It also doesn’t help already having thin, straight asian lashes. But just two weeks later, I can see my lashes are thicker, and the patch of lashes that was missing are starting to grow back! I also noticed other lashes growing in other parts of my eye. Plus, it hasn’t given me any irritation whatsoever. Seriously the best serum on the market!
I saw an ad online and decided to try the Diablo eyelash serum. I’ve used revitalash and grandelash- both worked very well but my eyes were RED and irritated all the time. I didn’t put two and two together and thought red dry eyes were due to allergies, but when i started diablo the redness stops because it DOES NOT have prostaglandins!! Lashes really have grown, not as thick as with prostaglandins but really long! I also had great experience with their customer service- I HIGHLY RECOMMEND THIS PRODUCT!
Diablo Lash serum helps strengthen, nourish & enhance natural lash length over time. It is does not irritate the eyes and it is very easy to apply. For best results you have to use it regularly.
This is a really gentle serum and never caused my eyes or skin any discomfort. The tips of my eyelashes are blonde, so it’s sometimes hard to know if I’m WANTING to see results, but then I put on mascara and BAM. I’ve run the before and after photos by people and they see a difference. Important to add that my lashes aren’t shedding as much!
I dont know. I was happy to receive the product so quickly and have used it faithfully every night. It's easy to apply, but there hasn't been any change in my eyelashes thus far that I can see.
I have tried a few serums since I started to lose my eyelashes in the last couple of years. None of them worked so I was a bit dubious of this one. But I have been using this serum for about 4-5 weeks daily at first and now every other day and I can’t believe how my eyelashes have grown. Really pleased and would definitely recommend. Before and after pics attached
Literal magic in a bottle!
I have tried so many eyelash serums over the years, but the Diablo Eyelash Serum is hands down the best. I’ve been using it every night along my root line, and my lashes have never looked this thick or long.
By week two, I could already see a major improvement in my lash density. Now, my natural lashes look so good I barely even need mascara. Consistency is definitely key, but the payoff is 100% worth it. Incredible product!
Having lost my lashes due to hospital treatment I was so pleased to find this serum.
I checked the reviews as I'm a bit funny about chemicals near the eyes .
Im very pleased with the results .
I used this religiously for 8 weeks and the growth was outstanding. I’m 54 and thought long lashes were a thing of the past but the serum sure does work, it also is gentle and doesn’t cause any irritation
It’s def helped me grow my tiny lashes, giving me some length I haven’t had since having my son. I can wear mascara and and it’s been so fun and has increased my self-esteem!
