| 摘要 |
A guard of a safety razor blade unit has a lubricating strip ( 24 ) disposed in front of a backstop ( 23 ), and the edge of the backstop which contacts the skin during shaving is castellated to define channels ( 30 ) separated by lands ( 31 ). The channels ( 30 ) enable an effective layer of lubricant to remain on the skin until the blade positioned to the rear of the backstop contacts the skin in the course of a shaving stroke.
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