From my understanding this “lift and cut” business is just a marketing ploy and that the “life and cut” shavers do not operate any differently nor do they cut any closer than any rotary based shavers. I have seen and felt rotarty shaves versus foil shaves and found that they both cut above skin-level. There are certain methods of shaving which should be avoided. for example, pulling the skin back tightly and pressing the shaver against your skin (against the grain) can get you in trouble halachaclly whether you use a foil or any rotary. in other words, it doesnt matter what shaver you use, what matters if the method you use to shave. I know the poskim have gone both ways about the lift and cut but has there ever been a scientific evaluation of the product?
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