Cosmetic Dermatology.Laser & Skin Care

Dr. Karen O’Neill

2145 Dunwin Drive, Unit 6,
Mississauga ON L5L 4L9

Call: (905) 820-SKIN (7546)
[email protected]


The sooner you start, the sooner you will see results!

Artistic Innovations
Natural Results



2145 Dunwin Drive, Unit 6,
Mississauga ON L5L 4L9

Call: (905) 820-SKIN (7546)
[email protected]


The sooner you start, the sooner you will see results!

5 + 15 =

Artistic Innovations
Natural Results

We know skin

Dr. Karen O’Neill, MD, FRCPC, DABD

At our state of the art Mississauga clinic, we are committed to taking the time to understand your aesthetic needs and concerns.
Right from the start, you are the priority, with close attention paid to understanding your individual cosmetic and skin care needs, identifying the right solution, and then working to achieve them.

Dr. O’Neill’s priority is your safety, comfort and outcome. Dr. O’Neill listens to your desires, vision and apprehensions. Only then will she recommend the best course of action for you. Dr. O’Neill and her team will tailor a treatment plan for you to achieve the best, natural result.

With over 15 years experience, Dr. O’Neill brings a thoughtful, warm, engaging female perspective to create a customized approach for you. Her specialist training allows her to recommend the best recipe for beautiful, healthy skin.

Combining artistic and scientific innovations in the field of cosmetic dermatology, including lasers and skin care, Dr. O’Neill and her team will tailor safe, effective treatments to your needs, timeline and budget.

Latest from our blog

Closed for the Holidays!

Even Santa's elves need a break! O'Neill Cosmetic Dermatology will be closed from December 23, 2019, through January 6, 2020. We want to wish you a Merry Christmas and look forward to seeing you in the New Year!

O’Neill Cosmetic Dermatology in Mississauga

Skin care and laser treatment facility.

Spacious, comfortable environment. We look forward to providing you with expertise and care in a warm and friendly environment.



Natural. Healthy. Youthful.

Our team led by board certified dermatologist Dr. Karen O’Neill, will help you express a more youthful and natural appearance. We specialize in non-surgical rejuvenation for a natural, healthy, youthful appearance.

Our goal is to provide you with outstanding results and awesome service using injectables like Botox and dermal fillers, lasers, CoolSculpting for fat reduction, and the best anti-aging and skin care products.

We Know skin

It’s About You!


We listen to your needs and concerns.


Individual Treatment Programs.


It's all about experience!


Natural, beautiful results.

Cosmetic Dermatology

Dr. O’Neill Dermatology

Popular Services

Injectables, including Botox, dermal fillers, Belkyra and skin beauty booster, devices for Skin resurfacing, Coolsculpting and skin tightening, a variety of skin care treatments including chemical peels, facials, acne extractions and much more!

Follow the links above and click on the images to learn more!

We offer a complimentary initial cosmetic consultation.

Dermal fillers minimize the signs of aging

Dermal Fillers

Using today’s advanced dermal fillers, Dr. Karen O’Neill can help restore lost volume and minimize signs of aging.

Botox cosmetic for softening eye wrinkles

Botox Cosmetic

Botox can soften frown and forehead lines and eye wrinkles.

Coolsculpting to eliminate stubborn fat


Reduces stubborn fat without surgery or downtime.

It starts with a conversation. Let’s Talk!

(905) 820-7546 (SKIN)

Dr. Karen O’Neill, FRCPC
Cosmetic Dermatologist

2145 Dunwin Drive, Unit 6
Mississauga ON, L5L 4L9

[email protected]

O’Neill Dermatology Mississauga


(905) 820-7546
O'Neill Dermatology

Call us with all your questions!
(905) 820-7546