My hair has been long since the 7th grade, and this is exactly what I do to keep it long, natural, and healthy (even if my hair dresser doesn’t agree).
You need an electric shaver that is going to function well for you. It may take a few tries to get used to using it, so don’t toss it out if you don’t like it the first couple of times you use it.
The sale products are often in fairly odd places, such as the caps at the ends of rows where no one usually looks, so go hunting for them (or ask for help to find them #noshame).
Consider how gross these testers must be, even if you’re using a fresh applicator.