You don't have to get the same brand but you need to buy one that has a hair/beard trimmer built into it.
You get as much hair off with the trimmer part of it, then you use the 3 round bits on the top (not sure the techinical name of them but they spin around and are used for stubble).
This then leaves you free of any stubble.
After that, get yourself a very cheap hair removal kit that comes with a Smoothing Cream, it's like a moisturuser that leaves you fresh smelling and smooth.
There may be a tiny bit of stubble left over but it's not noticlable because it is minute.
*There are female razors too but I prefer mens because they have the trimmer and the stubble removing bits all built in.
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