General hydroponics ripen

Hi has anyone used general hydroponics ripen, I am 6 weeks into a ten week flower cycle and have been hit with a really bad case of mite! I have tried smoke bombing and all kind of mite controll bur I think it is too late for that. So I went to the shop today and got some general hydroponics ripen as they told me it would ripen my bud early and that is really what I need. Dose any on know:

dose it even work?
How long it takes to work?
How many weeks it could shave off of flowering?

If anyone could help I would be great full!