No, but you do have to remove the passenger side air box to gain access to the rear of that side's headlight. I just unscrew the rear caps, barely pull back to open a tiny slit, then spray, and close. Usually will do it a few times, pausing maybe 2 or 3 mins between each to let the air inside settle. Yes, it's behavior of an OCD madman, but oh well. ha
Unfortunately, I did notice a tiny bit of condensation in one of my headlights recently, so looks like water is still finding its way in. Eventually, I'm going to pull the entire housings out and cover every possible seam with clear silicone... until then, I'll just have to respray every couple months.
FYI: If you don't have access to nitrogen (or argon) gas, they sell it in spray cans for "wine preservation" purposes...