I face lather so I guess the lather is on my face for a little while before I start.
I tried 15 today and despite re applying my lather it really felt like everything was more dried out then usual. Typically I wait 5 min. The shave seemed worse honestly . Reviving a necro thread here lolDepends on your beard. I've done a lot of experimenting here and I can say 2-3 minutes makes little difference for me. 15 minutes makes a huge difference though. If I let my lather sit that long my whiskers are soft and wipe off my face. That makes my shaves comfortable so that's what I do. I know a lot of guys would draw the line at more than 30 seconds of prep but when you have a beard like mine, a comfortable shave is worth the time and freedom from razor burn.
I face lather now, so the lather is on my face much longer than when I lathered in a bowl. With the bowl, I applied the lather and shaved immediately. With face lathering the soap is on my beard for several minutes while i generate lather.
Either way, I always shave the sensitive areas last (chin and around upper/lower lip) to allow the lather to do its thing.
It is the only piece of advice from Gillette that I have embraced.
View attachment 1634314