Is razor similar to dermaflash?

You could look into electrolysis. A trained cosmetician inserts a thin needle into the hair follicle, which gives a mild electrical stimulus that deactivates the hair root.

It's expensive, slightly painful, and sometimes needs to be repeated for certain follicles, but electrolysis does provide a permanent solution.

I don't think any kind of facial shaving would work well for women. As we get older, more little whiskers seem to appear, but they're most easily dealt with by tweezing. Get a really good pair of tweezers and a strong magnifying mirror, and work above a table lamp with a shade open at the top. 

It's not a permanent fix, and does need to be repeated as the whiskers re-appear, but it works.

Looking at the dermaflash it literally just seems to be a vibrating razor which somebody got the brilliant idea to charge $200 for instead of $12.95 at the walgreens.

I've known several women who swear by face shaving. It's a nice exfoliation technique, and I guess is really common in Japan. But there's nothing about that tool that makes me think it'd do any better than a regular razor.