Have any portrait photographers used this lens before? the Schneider Hollywood Black Magic Filter

I work in the movie industry and ESPECIALLY with older actors they of then use this to soften skin and make them look younger, I've never been able to see what one looks like through an SLR and video through a monitor doesn't really help me evaluate.

They seem to have up to 5 different versions from 1/4 stop to 2 stops

and it's not cheap.

I'm curious to the preference anyone who's used them has as far as how strong a filter, I would be buying the 77mm version and they are VERY expensive, but I recently shot a female actor who was much older and she was unhappy with all the wrinkles that shone on her face, I don't use photoshop much and don't have the skills to soften her skin, but thought of this.

There are also a few other brands that make a Hollywood Black Magic but this seems to be the most popular? I can't be sure, I'd like input.

Anyone? Thanks!

~Stone