Is Pico Toning definitely effective for improving dull skin tone?

Since returning from my summer vacation, freckles and blemishes have suddenly flared up on my face, making my complexion look sallow. There is a limit to how much I can cover them with concealer, so I am finally planning to go to the dermatologist tomorrow to get Pico Toning.

I have high expectations because it is said to be so effective for pigmentation that it is called a "pigmentation eraser." I am curious how many consistent Pico Toning sessions are typically needed to see noticeable improvement in clarity. The clinic recommended the 10-session package,

I am half worried and half excited about whether the Pico Toning results will be dramatic enough to justify the time and money I have invested. I heard that the skin gets very dry after the procedure, so I should be prepared to apply plenty of moisturizer. Please share some great aftercare tips!