The Rev Dodgson said:

Cymek said:

How often do the men here replace manual shaver blades
I find after about 5 or less they aren’t decent to shave with

Really?

I’d guess about 50 for me. Much more than 5 anyway.

One thing I found makes a difference is to not rinse the blade under hot water until the shave is finished, then give it a thorough rinse.