If you take out the blades form your shaver, remember how you too kit out so you can put them back, you will see that under each blade, going around in the circle, there is a second thin piece of metal. this second piece is the lift and cut. You can remove that extra piece with a small pliers and/or tweezer. be very careful because they are very sharp, more so if they have never been used.
Maybe if we did more to teach about the beauty of Tznius as well as bolstering our children’s self confidence they wouldn’t feel the need to attract attention in such a goyish manner.