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First I've heard of this. I watched the video--If all the silicone is burned off the first time why would you need to burn the mask multiple times?Yes, you can burn your mask multiple times. I've never gone as far as removing the lenses, but that would ensure a complete removal of the release agent. What brand of mask?
Because you don't know if you burned it all off the first time... only when you use the mask again, and you get a couple foggy spots, then you missed some. Repeat process. 2 maybe 3 times usually nails it.