None of the links I have found still worked. I just bought one still new in the box! Lot's of people looking for the manual so here it is!
https://drive.google.com/open?id=1gmX950vFNxMBQCASrLoiMZGei74t6SI5
Is there a single medical product in the world that is universally effective? Note the trap of language. No one has ever tested such a product on everyone. Further,this is NOT a medical product. Cosmetics simply are not medicine. And, whatever effect they do have on some subset of the population likely has its limitations. Does that rule out it doing something for someone? No, but who can predict what that is for whom? But that is the situation for the whole cosmetic industry. You are sold hope. It encounters reality and the difference between the two is what you have bought. You might as well have asked if the lottery is a scam. If the product is tested, you have to look at it in terms of the sample size and just what that sample represented. Double blind experimental testing is very expensive. Testimonials are a comparatively cheap alternative. You can look at what consumer reports says about face creams in general.
There is a small button on the underside of the chrome trim above the numberplate which you use to open the boot from outside the vehicle. No internal button.
maybe your question should have been "how do you use Google".
i like to help people that can help themselves first.
Top Tip, if the same manufacturer name keeps popping up, it's most likely the same machine under a rebranded name, also i believe they call them "blades" and you need a "replacement" (thanks Google)