How does Levulan PDT work?

Levulan Kerastick Topical Solution is applied to Actinic Keratoses (AKs), often referred to as “sun spots”, and the solution is then absorbed by the AK cells where it is converted to a chemical that makes the cells extremely sensitive to light. When the AK cells are exposed to the BLU-U, blue light illuminator, a reaction occurs which destroys the AK cells.

The BLU-U blue light is of low intensity and will not heat the skin. However, during the light treatment, you may experience sensations of burning, tingling, stinging, or prickling of the treated AKs. These feelings of discomfort should improve at the end of the BLU-U treatment and should subside as early as 1 minute after BLU-U treatment but may take up to 24 hours after the BLU-U is turned off.

Following treatment, the AKs and to some degree the surrounding skin may redden, and swelling and scaling may also occur. However, these effects are temporary and should completely resolve by 4 weeks after treatment.

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