Yeah: No.

The vids LOOK like they really should be helpful.

But apparently they are produced by people who (a) have visibly sturdier lenses than the little cellophane numbers I am dealing with and (b) do not blink with any kind of strength at all.

Sigh.

At least it was only $22 bucks.  But I do wish I had purchased several years ago, when they still made hard SFX lenses.  Blah.