实际上，这并不只关系到剃刀和胡须，也要考虑能产生泡沫的剃须膏，在刮胡子之前把它涂抹在胡须周围。
In practice , it 's not just a matter of razors and hair , there 's also shaving cream to consider - foamy stuff that you smear around your hairs before shaving .
泡沫剃须膏