Never needed it. My penis gets very smooth when fully erect. Lube dries out and makes it more difficult after a couple minutes than without it. Only time I do it with lube is mutual masturbation with a woman when we've already lubed ourselves up for intercourse.
I like jacking off with coconut oil; it's cheap, readily available, and tasteless. A couple of drops of essential oil and it makes a great massage oil too.
I have tried quite a few different lubes over the past fifty plus years masturbating. My favorite lube is Mens Cream for last thirty years. Last twenty years masturbation has been my sex life. I have discovered over time that there is a perfect portion to make masturbation better. I am cut and have a helmet head. A little bit of the lube goes a long way and lasts a long time. When needed I add more but try not to over lube as the sensations are less intense. Varying my strokes from single finger to ten fingers and everything in between makes my masturbation session even better. This year I have had a lot of personal-best sessions and frequently top the previous session. Someday it may be the cause of my death: what a way to go. Would have to be closed casket funeral because of the look on my face.
I would gladly masterbate for you, and with you. I'm sure we can share techniques and enjoy discussing experiences with each other
I do when in the shower, or when I jerking off for my gal. It’s having lube available; in the shower it’s soap with her it’s the lube we use.