Photodynamic therapy works by combining a photosensitizing solution called Levulan Kerastick with light therapy. The Levulan Kerastick is first applied to the treatment area and the light then activates the solution – allowing it to eliminate damaged skin cells without harming the healthy ones.
The therapy works differently depending on which skin conditions you’re treating. For example, in acne patients, the Levulan activates the bacteria that triggers acne, exfoliates the skin to unclog pores and decreases the activity of the oil glands. For patients with pre-cancerous lesions, the Levulan is absorbed by the cancer cells which makes it sensitive to light. When the light energy is directed at the precancerous lesions at the proper wavelength, the drug is activated and the cancer cells are destroyed.