When I was young I didn't use any lube, but now my cock lost its sensitivity, so I have to use a diluted water based lotion to masturbate, otherwise it takes too much time to cum. Diluted lotion is so effective and positive, my hand moves up and down easily even for long session.
I have masturbated with lube and without. It probably has to do with my technique, but I found that I enjoy it much more having direct contact with my skin. Especially, since I produce lots of precum and I like to lick my precum from my fingers and I don't like it mixed with any type of lube.
I been using lotion or lube sense birth. Mom left extra baby lotion as a infant I used hand lotion and Vaseline through my teens and young adult as I got in my 30s I tried some lubes. Its a must for edging In my teens I rubbed myself dry a few times too long and ended up really soar and very visible as a nudist. I think weather you are cut or not makes a difference. Regardless everyone should try it.
I bruised mine a few times in my teens. Have you tried to restore the sensitivity by soaking it in lotion nightly wearing underwear that holds the penis? I like vibrating sleeves witch might help?
You need to try Albolene. It's like a thin slicker vaseline, not sticky. Stays in place, doesn't run or melt, a little lasts a long time, no fragrance, doesn't dry out. Great for long edging sessions, I love it and have used it for years.