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Wet install, probably. Dry install, you'd be better off removing the individual pieces of dust with scotch tape than reapplying it completely. Note that I don't advocate doing a wet install; I'm just stating the facts.
 
You can do a wet install if you wanted to. When I had it before, I got finger print on it. I washed it off with soap and water. Left it a lil wet still and then applied it on my phone. Adjusted as necessary and then squeeze out the water and bubbles. Perfectly fine. Will dry in like 24 hrs. I did it twice too cuz I had to change out my phone once for warranty. So you can do a wet install if the dry method doesnt work out for you with removing the dust.
 
Since I'm really anal about the tiniest little specks under mine I literally applied, and reapplied it about 8 times one night. I washed it under the sink with soap and water each time until I got it perfect via a wet install (which I prefer for that perfect placement). Can barely tell it's there. Aside from it becoming scratched over time I believe I could use mine indefinitely via this method.
 
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