Diablo Cosmetics Reviews 

1,667
•
TrustScore 4.5 out of 5

4.3

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Review summary

Created with AI, based on recent reviews

Looking at 216 reviews, reviewers overwhelmingly had a great experience with this company. Customers frequently praise the fantastic eyelash serum, noting that the formula is very gentle on sensitive eyes while consistently delivering noticeable length, growth, and thickness. Consumers also note the smooth application process and the exceptionally helpful support team that promptly resolves any unexpected issues. Some reviewers were not happy with delivery delays, mentioning that orders occasionally took too long to arrive, lacked confirmation emails, or tracking information was entirely missing. A few people also felt that certain product tubes felt unusually empty or ran out much faster than expected.

What people talk about most

Quality

Reviewers highlight positive aspects of quality, expressing immense satisfaction with how the gentle serum... See more

Order

People report ambiguous experiences with order, noting that while many consumers enjoy speedy shipping and... See more

Customer service

Users describe positive interactions with customer service, frequently highlighting prompt replacements and... See more

Reviews shaping this summary

Rated 4 out of 5 stars

I've tried several eyelash growth serums over the years. Not one of them made any difference and some of them really stung. However, this is the second Diablo serum I've ordered. It seems to help. My... See more

Company replied

Rated 5 out of 5 stars

A most responsive company. Great product. Order acknowledged immediately. Delivery prompt. Customer service 5 star. I have just ordered my third eye lash serum. Used regularly it is super. My las... See more

Rated 5 out of 5 stars

Ok where to begin. Having reached an age where I noticed my once good lashes have become short and sparse. Having tried that one extortionately priced serum, it wasn't one that I could afford either.... See more

Rated 5 out of 5 stars

There's a pretty intense learning curve to do this right but once you figure it out, the stuff really works!! I use it to laminate my brows as well as perm my lashes. The adhesive causes an allergic r... See more


Company details

  1. Cosmetics Store

Written by the company

Diablo Cosmetics is your destination for simple at-home beauty products.


Contact info

4.3

Excellent

TrustScore 4.5 out of 5

2K reviews

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No recent history of asking for reviews

This company hasn't invited customers recently, so reviews may not be representative

Replied to 100% of negative reviews

Typically takes over 1 month to reply

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4.3

All reviews

(1,667)

216 reviews in the last 12 months

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Rated 2 out of 5 stars

The eyelash serum doesn’t work

The eyelash serum doesn’t work, I’ve been using it for months and no difference. I’ve had better results with other brands, but unfortunately they irritant my eyes. This is gentle on the eyes but it has no benefit for me

10 June 2026
Unprompted review
Diablo Cosmetics logo

Reply from Diablo Cosmetics

Thanks for taking the time to review the serum, Rachel, and we’re sorry it hasn’t worked out so far. We’d really like to understand what went wrong and help you get a better result. If you email info@diablocosmetics.com with your order number, we’ll take a look and sort out a solution for you.

Kind regards,
Diablo Cosmetics Support

Rated 4 out of 5 stars

Absolutely Amazing

I’ve ordered from Diablo Cosmetics twice now and both times it did not disappoint. The products are amazing and the lash lift kits last so long and work great! They’re super long lasting too! Highly recommend.

9 June 2026
Unprompted review
Rated 5 out of 5 stars

Highly recommended

Easy to order from their website. Kept up-to-date with the progress of my order. Item well packed for transit. Very happy with the product and the service.

13 April 2026
Unprompted review
Rated 5 out of 5 stars

Longer fuller lashes in a few weeks…

If you want longer fuller lashes get Diablo serum! My lashes were thinning as I got older, but now they are so thick I can go without mascara. And it only took just a few weeks. The ordering is easy and delivery is free and fast.

4 June 2026
Unprompted review
Rated 5 out of 5 stars

I asked a question and they responded…

I asked a question and they responded quickly wit good advice, not trying to sell me anything. I really appreciated it and will continue to buy their product. Most companies just try to sell you something else instead of addressing the question.

28 May 2026
Unprompted review
Rated 5 out of 5 stars

With my first ever order with this…

With my first ever order with this company the packaging was damaged so I was very disappointed after it took over 2 weeks to be delivered. I contacted customer service just before I received my late delivery, Imran who got back to me very promptly and said my package must of been lost in the post as it should not take that long, he apologised for the courier reissued another one for me and also a compliment eyelash serum and 30% of my next order. So I was very impressed with the customer service support from this company and will be ordering from them again in the near future.

5 May 2026
Unprompted review
Rated 5 out of 5 stars

I had used lash extensions done in…

I had used lash extensions done in salon 1,5 years. It had completely destroyed my lashes. I saw Diablo viral campaigns on social media and decided OK, I try - and girls, what results I got! It has been now 8weeks of active use (every night I apply) and my results are amazing! I got my lashes back and they are now getting back to good condition. Just trust the process, it will work! My warmest recommendations

9 May 2026
Unprompted review
Rated 5 out of 5 stars

I ordered a lash serum

I ordered a lash serum, it did seem to take a while to arrive, I contacted Diablo who assured me it was on its way. I did receive it, the box was damaged and squashed. I contacted Diablo again to let them know, they are kindly sending another one to me. The Customer Service has been amazing. I haven’t used the product yet but will follow up on that too.

27 April 2026
Unprompted review
Rated 1 out of 5 stars

Purchased this serum and Didn't see any…

Purchased this serum and Didn't see any difference in my lashes at all. Used the whole tube and didn't see any change whatsoever.
Wasted £25 on this product.
VERY DISSAPOINTED!

6 May 2026
Unprompted review
Diablo Cosmetics logo

Reply from Diablo Cosmetics

Thanks for taking the time to review the serum, Gail, and we’re sorry it hasn’t worked out so far. We’d really like to understand what went wrong and help you get a better result. If you email info@diablocosmetics.com with your order number, we’ll take a look and sort out a solution for you.

Kind regards,
Diablo Cosmetics Support

Rated 5 out of 5 stars

Best company ever

Best company ever, I’ve been using their lash products for years and if you have any issues they’ll fix them and go beyond just a replacement of that product. Honestly couldn’t be happier with any other brand! My lashes stay lifted for up to 2 months and so healthy!

6 May 2026
Unprompted review

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