It is very common for men and women to have as many as 40 moles on their body. Moles typically appear in childhood and adolescence, and they often change in size, colour, and shape with age and exposure to the sun. Moles are especially common in people with fair or lighter skin colour.

In most cases, a change in the appearance of a mole is not cause for concern, but sometimes it may be a sign of pre-cancerous cells or even skin cancer (melanoma). Therefore, it is critical to have any suspicious mole checked by a dermatologist.

Skin tags, on the other hand, are harmless pieces of skin that are more prevalent in women and older adults. These unsightly formations generally appear on the face, neck, and back, and can cause discomfort when in contact with clothing. You cannot remove skin tags at home, but we can remove them for you in the clinic.

Before & After

Liquid Nitrogen (LN2) Treatment


Liquid nitrogen, or cryotherapy, is a quick, non-invasive process used to remove unwanted moles and skin tags. At Derm.ca, we have been highly successful in using LN2 to remove moles for cosmetic purposes, as well as abnormal or pre-cancerous skin lesions.

The LN2 treatment is a simple procedure that uses pressurized liquid nitrogen to freeze and eliminate moles and skin tags. Liquid nitrogen is a very cold gas that approaches temperatures of -196 degrees Celsius. Once the LN2 is sprayed on the affected area, it induces something which resembles frostbite.

In this procedure, patients report a mild stinging sensation during the freezing and thawing process, but it only lasts for a few minutes. Immediately after the procedure, the area will become red and swollen. It may also become sensitive to the touch.

Shortly after, the area will blister, crust and scab. Within a few weeks, the scab will fall off and reveal new healthy skin.

Why Remove Moles and Skin Tags?


In most cases, moles and skin tags do not have to be removed. However, many of our patients have them removed for the following reasons:

  • A mole is unsightly and appears in visible areas, such as the face and neck.
  • A mole is irritated as a result of rubbing on clothing or getting caught on jewelry.
  • A mole is cancerous or pre-cancerous and must be removed for medical reasons.

Is There Any Downtime?


Patients can resume normal activities immediately after the treatment, but the treated area may remain tender for a few days. Patients should avoid direct sunlight and soaking the area in water for at least 24 hours after treatment.

We also recommend applying Revoderm Hydrating Facial Moisturizer, which contains Vitamins E and C to keep the area hydrated and enhance healing.

Benefits of Liquid Nitrogen (LN2) Treatment


  • Quick procedure performed at the Derm clinic
  • Extremely high success rate
  • Minimally invasive with little discomfort
  • No downtime

Dr. Ken Alanen and His Team


Dr. Alanen, Director of Dermatology at Derm.ca is one of the most highly respected dermatology and Mohs’ skin cancer specialists in Canada. He has successfully removed thousands of moles for both cosmetic and medical reasons.

His knowledge, expertise, and experience have allowed him to quickly assess a mole and analyze it in our in-house laboratory for the existence of cancerous cells.

Being a dermatopathologist as well, he has analyzed over 250,000 skin tests in his career.

Schedule A Consultation

Thank you for your interest in our clinic.

Medical Dermatology appointments require a referral from your Family Doctor or General Practitioner, while Cosmetic procedures do not.

A fee of $100 will be charged should you choose not to obtain a referral for any Medical appointments. Please contact us at 403-457-1900 or email us at info@derm.ca if you are unclear as to whether your issue is Medical or Cosmetic.

Also, you are welcome to use the acne.ca platform for secure electronic dermatology consultations.

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Here’s What Our Patients Are Saying…

“I see Dr. Alanan regularly for many skin problems and he never has a problem discussing them in the same visit. He’s also solved all my skin related issues that I’ve struggled with for years that family physicians couldn’t sufficiently resolve. I highly recommend Dr. Alanen and his Derm.ca clinic as his treatment and care is second to none.
-Kevin L.