Scubapro suggested soaking the lens in hot dish soap so I took the lens out and did so when changing the left one to a +1.5 so far this is a really nice mask and the lens availability beats gluing magnifiers in. There are a lot of cheaper good masks out there but this one is high quality and the ease of lens swapping puts it over the top for me, my two Paragon’s now sit unused (along with a bunch of others).