Offered at your clinic

Photodynamic Therapy (PDT) Montreal

Photodynamic therapy (PDT) is a non-invasive treatment that combines a photosensitizing agent with blue light to target abnormal or damaged cells in the skin. It is used for conditions such as precancerous lesions, sun damage and inflammatory acne.

Book an Appointment

Because every patient's skin, concerns and medical history are different, photodynamic therapy (PDT) at our Dermapure Pointe-Claire clinic, in Montreal's West Island, always begins with a personalized medical consultation with a physician or healthcare professional. Together, you will assess whether PDT is the most appropriate option for your condition and your goals and discuss a realistic plan, the expected results and the possible side effects.

What to Expect During Your Session

Step 1

Personalized Assessment

Your treatment begins with a comprehensive consultation to assess your skin type, condition, and treatment goals. Our experts will tailor a personalized treatment plan, selecting the most effective approach based on your unique needs. Whether treating acne, sun damage, or precancerous lesions, we ensure your experience is safe and effective.

Step 2

Proceed with Treatment

The procedure starts with cleansing the treatment area, followed by the application of a photosensitizing agent. After allowing the agent to absorb (typically for 1.5–2 hours), the skin is exposed to blue light for 15–30 minutes. This light activates the agent, targeting and destroying damaged cells. Most patients experience mild warmth or tingling during the light exposure, which is temporary and well-tolerated.

Step 3

Return to Normal Activities

After treatment, your skin will be highly sensitive to light, so avoiding direct sunlight and bright indoor lighting for 48–72 hours is essential. Mild redness, peeling, or sensitivity may occur, but these side effects typically subside within a few days. To promote healing, our team may recommend hydrating creams or other post-treatment care products.

Follow-Up & Maintenance

Achieving the best results with Photodynamic Therapy often requires multiple sessions, spaced several weeks apart. For acne, 3–5 sessions are typically recommended, while treating precancerous lesions or sun damage may require a more customized schedule. Once the initial treatment series is complete, occasional maintenance sessions may be needed to address new concerns or preserve long-term results. Your healthcare provider will create a follow-up plan tailored to your skin’s needs.

Contraindications

While Photodynamic Therapy is safe for most patients, certain conditions may require treatment to be postponed or avoided active skin infections, open wounds, or cold sores in the treatment area. Pregnant or nursing individuals should wait until after this period to undergo treatment. Patients with a history of photosensitivity or certain medical conditions should consult with their healthcare provider to determine if PDT is suitable for them.