After treatment with BBL, Halo or any laser that is aimed at treating brown spots, I always council my patients that maintenance treatments and daily SPF are the key to long term results. Daily SPF with a zinc and titanium based product is the #1 thing that will help slow the regrowth of your brown spots. Find one that you can comfortably wear 365 days of the year as well as one with a higher percentage of zinc and titanium to be used for beach/pool/sports. Second, maintenance treatments at a lower frequency is also beneficial. I recommend 2-3 treatments per year as a part of the forever young program, it will help reduce brown spots but also leads to younger, healthier looking skin over time.