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 5 out of 5 stars

Best product ever

Best product ever. The only one that doesn’t make your eyes red and makes my eye lashes the longest they’ve ever been. People even comment on them. 🩷🩷🩷🩷. Thanku for such a wonderful product. Been buying for 3-4 mths and I’ll keep buying.

July 23, 2026
Unprompted review
Rated 5 out of 5 stars

Diablo Effective

Diablo lash Serum was wonderful. It helped my lashes return to a more normal condition after some of them were lost when an anesthesiologist ripped the tape from my eyes after a surgical procedure.

April 22, 2026
Unprompted review
Rated 5 out of 5 stars

Lovely company to purchase with and…

Lovely company to purchase with and they appreciate your custom . Eyelash serum very good l haven’t given up with this serum l had very little lashes after lash extensions for many years. The serum helped so much l can see how my lashes are growing. Give it a go you won’t be disappointed.

July 15, 2026
Unprompted review
Rated 1 out of 5 stars

The lash lift spaces are far too big…

The lash lift spaces are far too big for small eyes ....even smallest one is too big ...?? They dont stick down at edges with the glue...even though I followed instructions ...waste of money ...go to your beautician x

July 15, 2026
Unprompted review
Diablo Cosmetics logo

Reply from Diablo Cosmetics

Thanks for taking the time to review the kit, Belinda, 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 2 out of 5 stars

Ordered lash serum with great…

Ordered lash serum with great expectations. Still have not received the product 1and very little communication, if any. I was under the assumption that being a ‘UK’ based company, the shipping would be quick and communication easy. . I was quite surprised, and a bit angry when I found out it was being shipped from china I understand a lot of our products do come from china but when it comes to cosmetics and especially eye products, I am a bit skeptical. I doubt whether or not I will even use it. You haven’t got my vote Diablo. I guess I am not in the high percent of ‘happy’ customers as most of these reviews suggest. Feeling ripped off and duped

July 12, 2026
Unprompted review
Diablo Cosmetics logo

Reply from Diablo Cosmetics

Thank you for taking the time to share your feedback Linda. We're very sorry to hear about your experience and understand your frustration regarding the delivery time and communication.

We appreciate that the shipping origin came as a surprise. While we are a UK-based company, we operate fulfilment centres in different locations to serve customers around the world as efficiently as possible. We understand that this may not have met your expectations, and we're sorry for any disappointment this caused.

We'd really like the opportunity to put this right, Please email info@diablocosmetics.com with your order number and we’ll look into it straight away, whether that means getting it to you or refunding you.

Kind regards,
Diablo Cosmetics Support

Rated 5 out of 5 stars

This product is great

This product is great and does not irritate my sensitive eyes. Have only been using for a few weeks but can see improvement in my lashes already. I have ordered more while on sale. The ordering is easy and the customer service is excellent. Happy to recommend.

July 11, 2026
Unprompted review
Rated 5 out of 5 stars

It works and didn't irritate my sensitive eyes

I have sensitive eyes and was searching for something nourishing to strengthen and grow my lashes but not make eyes sore. I found it in the Diablo lash serum. This is my 5th repurchasing as I love it and can definitely see results.

July 5, 2026
Unprompted review
Rated 5 out of 5 stars

Been a customer for 8 years

Been using their lash lift sachets for 8 years, no issues, they've been great to use. The lash serum didn't do anything for me unfortunately but neither do other brands. Prices are great, I had two terrible lash lifts at salons and my results are 10x better with Diablo.

June 28, 2026
Unprompted review
Rated 5 out of 5 stars

Great Product that works

When I purchased this lash serum I had very little lashes. 2 months have passed and can see lashes and growth in length!! I HIGHLY RECOMMEND DIABLO LASH SERUM!!!!

July 2, 2026
Unprompted review
Rated 1 out of 5 stars

Disappointed!

Decided to go with Diablo Lash Serum as it was prostaglandin-free. The reviews and before/after photos made for good reading and I felt I was making a good choice. Unfortunetly this was not the case. I have used this produce for 6 months and have seen no difference in growth, infact my eyelashes have a tendency to drop out now to a point where they can look quite sparse in places and growing back in they appear quite straight rather than having their usual natural curl. I believe the before/after pictures may be of the Diablo Lash Lift as I cannot believe you can get these results from the Diablo Serum Product. I will not be reordering.

June 30, 2026
Unprompted review
Diablo Cosmetics logo

Reply from Diablo Cosmetics

Thanks for taking the time to review the serum, Elizabeth, 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

The customer service has been EXCELLENT!

The customer service has been absolutely amazing.
Their prompt response to all my questions including cost in NZ dollars was answered promptly.
I find their eyelash serum excellent and would 100% recommend the product and the customer support. Pam NZ.

June 28, 2026
Unprompted review
Rated 1 out of 5 stars

Total waste of money never worked at all

Total waste of money never worked at all

June 26, 2026
Unprompted review
Diablo Cosmetics logo

Reply from Diablo Cosmetics

Thank you for taking the time to leave a review. We're sorry to hear that our product didn't work for you.

We'd appreciate the opportunity to learn more about your experience and see if there's anything we can do to help. Please email info@diablocosmetics.com with your order details so we can investigate further and work towards a suitable resolution.

Kind regards,
Diablo Cosmetics Support

Rated 5 out of 5 stars

Little or no irritation to my sensitive eyes ..

Was sceptical but as the serum had little or no irritation with my very sensitive eye I decided to give it a try. After a few weeks of use, I have noticed that a small space in my eyelash line has filled in. My lashes seem to feel more substantial and my mascara goes on much quicker. I definitely feel they are improving so I’m continuing for another few months.

June 22, 2026
Unprompted review
Rated 5 out of 5 stars

These products are safe and effective

These products are safe and effective. The lash lift does take a little practice but it’s possible to get salon results. The lash liner is perfect for me as it does not cause under eye darkness, and it does give some fullness and thickness to the lashes and is affordable. Others I’ve tried have more noticeable results but leave dark under eye circles and a much more expensive.

June 21, 2026
Unprompted review

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