article_snippet.sent: Scientists at Gillette have spent nine years studying how to get the perfect shave.
article_snippet.sent: Scientists at Gillette work has shown why washing the skin is so vital and why you should never, ever tap your razor on the sink, and also settles the debate about whether you should go with, or against the grain .
article_snippet.sent: Before the perfect shave, hydrate the hair by washing the skin with a gentle cleanser: 
article_snippet.sent: This softens the hair and significantly reduces the force needed to cut the hair.
article_snippet.sent: Apply plenty of shave gel: This provides a protective anti-friction layer and improves razor glide for a smoother, more comfortable shave.
article_snippet.sent: Shave with a  multi-blade razor using light strokes: Gillette said a  multi-blade razor using light strokes should do the work, not the person shaving.
article_snippet.sent: Begin by shaving with the grain of the hair before switching and going against this grain.
article_snippet.sent: Make sure blades are not old or dull: 
article_snippet.sent: The lifespan of razors can vary depending on how often The lifespan of razors are used and how hard.
article_snippet.sent: As a general rule if the razor begins to drag or doesn't cut as closely as before, replace the blades.