Don't throw the razor when it's dull. Just a pinch of salt, Instantly becomes as sharp as new 

真的嗎？？

塗上後開不動，立即清洗後就可開動。

Toothpaste, any kind (I don't read Chinese either, but saw what it was), and some vegetable disinfectant water. Hope this helps.

不妨試試

Astringent like witch hazel is British "toilet water." Thanks

I t’s like EAU De Toilette

@@TheSryn1 common toothpaste contain some abrasive powder (most commonly chalk) but the transparent ones (the "gel types") do not. Salt helps dissolve protein residues and the toothpaste helps clean the debris. You can use your tap water.