Dr Kristina Vanoosthuyze studies the shaving habits of 80 men every day using high - definition cameras at Gillette 's wash Centre in Reading . Her footage reveals what happens as multi - blade razors move over hairs . Scanning electron imaging shows difference between dry and wet skin . The forensic scientist has also revealed the do 's and don'ts of shaving . She recommends people wash before a shave , and use light strokes . Tests have shown people should start by shaving in direction of the razor . And razors should never be tapped on a razor under any circumstances .
Dr Kristina Vanoosthuyze studies the shaving habits of 80 men every day using high-speed cameras at Gillette 's Innovation Centre in Reading . Her footage reveals what happens as multi-blade razors move over hairs . Scanning electron microscopy shows difference between dry and wet skin . The Gillette scientist has also revealed the do 's and don'ts of shaving . She recommends people shower before a shave , and use light strokes . Tests have shown people should start by shaving in direction of the hair . And razors should never be tapped on a sink under any circumstances .