PDT is a two-phase medical skin treatment. In phase one, a photosensitizing agent (typically aminolevulinic acid or a similar compound) is applied to the skin and allowed to absorb into the target cells—particularly rapidly dividing cells, overactive sebaceous glands, and abnormal keratinocytes. In phase two, a specific wavelength of visible light is directed at the treated area, activating the photosensitizer. This activation generates reactive oxygen species that selectively destroy the targeted cells while leaving healthy surrounding tissue intact. At Aqua Medical Spa in Mississauga, Dr. Armogan calibrates every variable of this process to your specific skin condition.

PDT pricing at our Mississauga clinic depends on the treatment area, the condition being addressed, and the number of sessions in your recommended plan. Acne PDT and actinic keratosis PDT may have different pricing structures based on the complexity involved. During your free consultation, we provide a fully transparent quote with no hidden fees.

During the light activation phase, most patients experience a mild to moderate warm, tingling, or stinging sensation. The intensity varies based on the photosensitizer concentration, incubation time, and the condition being treated. For acne PDT, the sensation is generally mild. For actinic keratosis treatment with longer incubation, it can be more noticeable but remains tolerable. We monitor your comfort throughout and can adjust the light intensity or take cooling breaks if needed.

Results vary by condition. For acne, a series of PDT sessions can produce sustained improvement lasting months to over a year, particularly when combined with a good skincare regimen. For actinic keratosis, treated lesions are typically cleared permanently, though new lesions may develop over time from ongoing sun exposure. Maintenance sessions help preserve results for both conditions. Dr. Armogan will outline expected durability during your consultation.

Initial clearing and improvement are typically visible within the first 1-2 weeks as damaged cells shed and are replaced by healthy tissue. Acne patients often notice reduced breakout frequency and oil production within days of their first session. Full results—including improved texture, tone, and overall skin clarity—develop progressively over 2-4 weeks and continue improving with each subsequent treatment in your series.

For acne, most patients at our Mississauga clinic benefit from a series of 2 to 4 sessions spaced 2 to 4 weeks apart. For actinic keratosis, 1 to 3 sessions may be required depending on lesion density and location. The exact number depends on your condition severity, skin response, and treatment goals. Dr. Armogan reassesses your progress before each session and adjusts the plan accordingly.

PDT is one of the most effective clinical treatments available for moderate to severe acne that hasn’t responded adequately to topical or oral medications. It works through three simultaneous mechanisms: destroying P. acnes bacteria within the follicle, shrinking overactive sebaceous glands to reduce oil production, and reducing the inflammatory response driving the breakout cycle. Many patients experience a 50-75% or greater reduction in acne lesions after a complete PDT series.

PDT has more post-treatment sensitivity than most non-invasive aesthetic treatments. Expect 24-72 hours of redness and warmth similar to a moderate sunburn, followed by several days of mild peeling or flaking as damaged cells shed. Most patients return to work within 1-2 days. The most critical aftercare requirement is strict sun avoidance for 24-48 hours, as the photosensitizer remains active in the skin and exposure to sunlight or bright light during this window can cause a severe burn reaction.

Yes, but timing matters. PDT can be integrated into a broader skin improvement plan that includes medical facials, chemical peels, topical retinoids, and other treatments. However, these should be spaced appropriately—typically 2-4 weeks before or after a PDT session—to avoid overstressing the skin. At our Mississauga clinic, Dr. Armogan designs a comprehensive treatment timeline that sequences each modality for maximum benefit and minimum risk.

Yes. PDT has been used in dermatology for decades and has a well-established safety record when performed by trained medical professionals following evidence-based protocols. At Aqua Medical Spa, Dr. Armogan directly supervises every PDT session, controls all treatment parameters, and monitors the patient’s skin response in real time. The most important safety factor is strict post-treatment sun avoidance—which we explain in detail and reinforce with written aftercare instructions.

PDT and laser treatments work through fundamentally different mechanisms. PDT uses a chemical photosensitizer activated by light to selectively destroy specific cell types (bacteria, dysplastic cells, overactive glands). Laser treatments use focused thermal energy to resurface, stimulate collagen, or target chromophores like melanin and hemoglobin. PDT is uniquely effective for conditions where cellular selectivity matters—particularly acne, actinic keratosis, and sebaceous gland overactivity—while lasers excel at surface resurfacing and pigment/vein correction.

Yes. PDT is equally effective for men and women. Male patients at our Mississauga clinic commonly seek PDT for persistent acne (particularly along the jawline and back), sun-damaged skin on the scalp, face, and forearms, and actinic keratosis in sun-exposed areas. The treatment protocol is the same regardless of gender.

Avoid sun exposure, tanning beds, and self-tanners for at least 1 week before treatment. Discontinue retinoids and photosensitizing skincare products as directed by Dr. Armogan. Arrive at our Mississauga clinic with clean, product-free skin. Do not schedule outdoor activities for the 48 hours following your treatment, as you will need to avoid sunlight and bright light while the photosensitizer remains active.

There is no strict age limit. PDT is commonly used for younger patients in their teens and twenties managing persistent acne, and for older adults addressing actinic keratosis and cumulative photoaging. The suitability of PDT depends on the condition being treated and the patient’s overall health—not their age. Dr. Armogan will assess appropriateness during your consultation.

PDT can be performed safely across a range of skin types. Because the photosensitizer is selectively absorbed by target cells rather than by melanin in the epidermis, the pigmentation risks associated with some light-based treatments are reduced. However, patients with very dark skin tones or a history of post-inflammatory hyperpigmentation should discuss this with Dr. Armogan, who will evaluate whether PDT is the best approach or recommend an alternative with a lower pigmentation risk profile.