Did you know that the main cause of razor burn isn't over-dried skin or a dull blade? According to the folks at Ritual, a line of men's grooming products, it's actually harmful bacteria that live within your shaver. The antiseptic in Razor Rinse promises to kill the bacteria, preventing those unsightly red bumps and ingrown hairs. Tea tree oil in the rinse also acts as a lubricant, promoting a smoother shave.