Originally Posted by
jdto
First off, there's no such thing as "opening and closing pores" in your skin. People say that all the time and it's simply not true. The pores are not operated by muscles and don't have the capacity to open or close, though they can appear larger when they are irritated or contain a hair follicle or oil-producing gland.
What you can do is work on soothing the skin, both before and after the shave. Using hot water does help to soften the skin and the natural oils you have on your skin, while cold water after the shave helps to soothe the irritated skin. Shaving will always irritate your skin, even very mildly, because of the exfoliating nature of the shaving process. There are some shavers whose skin will be irritated by the hot towel treatment and hot water in general. Try water that is more lukewarm for moistening and softening your beard, especially on the neck area where you are getting the irritation. Work fastidiously on your technique in that area, ensuring you apply the lightest amount of pressure you can possibly use while still reducing the beard. My neck is quite sensitive and I get ingrowns and burn from using anything other than a straight, though even that can still give me trouble. I've found that, with a DE, I need to be extra careful, as the smoother feel of that sort of razor compared to a straight can be deceptive. I avoid going ATG on my neck and my moustache area, because that only results in sorrow for me.
Now, I am relatively new to traditional shaving, but I've dealt with the issue of burn and irritation for most of my shaving life. Some of my previous solutions included: not shaving, shaving with only cool or lukewarm water, shaving in the shower, cold water rinses. All of these things help. There are some very good suggestions in this thread, so I would suggest you try some of them out and see what happens.
What type of blades are you using? Which model of Merkur? Have you tried different blades? Which ones?