That’s the secret, you don’t. You just change them when you can and dry them as well as possible.
It isn’t just nitrile, or black gloves though. Latex, poly, and vinyl gloves will all have your hands sweaty in the same amount of time. Now, in the medical field where I used gloves all day, you’d be changing them often. But, you’d also likely be washing hands every glove change, and have water getting in the gloves during some care.
When I switched to home health, I’d wear them longer because you only have one patient at a time, so I didn’t always need to change until I left their home, or direct care was over. Sometimes, you do need to change them during care, but it isn’t every fifteen to twenty minutes like it is in facilities when you’re busy.
But damn, after a 12 hour shift in a nursing home, hands are all wrinkly and feel like they’ve been chewed on sometimes. Even if you’re drying perfectly after washing, you’ll still be sweaty as soon as they’re back on.
I’ve used nitrile gloves for hobby stuff at home too. Usually only for an hour or so ata time, but even with AC, they get sweaty and irritated for sure.
You gotta wash well, then dry well, then moisturize.