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Your eyelashes matter

Professional and award winning eyelashes boutique in Dublin

Eyelash Extensions

Who doesn’t want longer, fuller or natural looking lashes without using Mascara. We customise each set of lashes just for you!

Eyelash Academy

If you are looking for a career change or to add to your existing treatment list why not sign up to our Eyelash Extensions Diploma Training Courses

Online Shop

We only sell the best quality lash professional products. Our lash trays are all vegan/cruelty free, very light and super soft to the touch.

Our Services



Pro Magnetics


About Thereasa

“Do what you love until you need no introduction”

The last decade has seen the Lash Boutique grow into a very successful, multi award winning business, now teaching students every week with my one to one approach which has shown proven success time and again and helps develop a personal relationship with all of my students.
Thereasa Arcari has won Awards for Best Lash Artist and Lash Educator and has seen demand grow beyond expectation with the next generation of Lash Artists keen to learn from one of the industries most recognised experts in the field.

“I am extremely lucky to earn a living from my passion and I love making my clients look and feel good with beautiful lashes.”

“The moment they look in the mirror after an application is priceless and to pass on my knowledge, tips and experience to my students is what I love.”

“I want you to have the best lashes you’ve ever experienced!”

Mary Claire Healy-Maloney

Always a pleasure visiting Thereasa. She has done my lashes for years. They are always done to perfection and importantly my own lashes remain in great condition as the extensions are so well applied. No one does them better!

Mary Claire Healy-Maloney


Had the most wonderful first consultation yesterday and subsequent extensions today with the beautiful Thereasa! I have been wishing for her reopening to come for the past few months and my experience of the Lash Boutique has far exceeded even those expectations. I’ve had lash extensions elsewhere previously and have researched many other places before happening across the Lash Boutique and I’ve finally found my forever lash paradise!! Thereasa has incredible knowledge and tailors your extensions to your individual needs – something that was hugely important to me. I work as a medical doctor in a busy hospital so wanted a natural look that will save prep time in the mornings. She was so chatty and friendly and I felt so at ease in her company! When I first saw the lashes after application, I was so so pleased! It was the first time I’ve had extensions done where I felt they were just perfect. In another example of how kind Thereasa is, as part of the Frontlinegivebackday, she did the entire thing for free! I highly recommend the Lash Boutique for those searching for the perfect lashes – either as your first set of extensions or if you’re still on the search for that perfect set!!


Fiona Sheehan

I’m absolutely delighted with my set of mink lashes. Thereasa is amazing at what she does and was so meticulous which is very reassuring. It’s a lovely cosy room and all round 5-star experience.

Fiona Sheehan


Theresa was simply brilliant. Professional and welcoming, cannot recommend this place enough. She knew exactly what lashes to use for my face shape. The quality of the lashes are the best that I have ever used. Really great lash extensions


Rebecca King

First time getting lashes and they are so perfect! Thank you so much Thereasa, I love them

Rebecca King

Sinead Kennedy

I received my beginners training course in classic lashes from Thereasa. I cannot rave enough about how amazing this woman is. She in an unbelievable teacher and made me feel so at ease. I felt like I could go to her at any time for help and she’d be right there. I received my full diploma and it’s all because of this woman. She’s a superstar ❤️

Sinead Kennedy (Former Student)

Dean Heffernan

I’ve recently trained with Thereasa Arcari and it has honestly been the best experience I spent month’s going back and forward with different courses and I just kept coming back to this course. It’s 1+1 training plus the kit has everything you need if not more For an amazing price. Thereasa a very talented professional and a natural teacher . Thank you 😁

Dean Heffernan (Former Student)

Sharon Cousins

Thereasa was amazing! So patient and kind and brilliant at what she does. I would strongly recommend this course! Great teacher with a world of knowledge. Thanks again Thereasa.

Sharon Cousins (Former Student)

Jan Knight

I would highly recommend this lash course, Thereasa is an absolute professional and I had a fantastic experience and came away feeling I have really learned a new skill. It is a 5-star course.

Jan Knight (Former Student)

Anastasija Simiceva

I have completed the foundation in Eyelash extension course with Theresa. I highly recommend her as a teacher. The offering of one-on-one learning and teaching method is greatly beneficial. No detail is missed. Truly amazing at what she does from eyelash extension applications to teaching the art of applying eyelashes extension.

Anastasija Simiceva (Former Student)