Those of us who lack decent skin pigment have to be careful. I have ancestors who were slaves in the USA, or who wondered what was up when European boats arrived on the coast of Labrador, but I got the Irish skin. While I've had over ten years of liquid nitrogen treatments for actinic keratosis sunspots, the dermatologist thought they were coming in too fast, and the risk of one turning to cancer was getting high.
My GP and I thought things were accelerating, so 2 weeks later I was sitting in a specialist's office getting a biopsy done. It was just pre-cancerous, but it made sense to obliterate the problem before one of the spots went rogue.
The man in the morning mirror ain't pretty, but he never has been. It's a bit like doggedly inflicting a really fierce sunburn on yourself - nothing worse than that. I have to wear a hat all the time anyway, as a bald guy, and I have to shun the sun to a greater degree for a few weeks. It's nothing like the real chemo I saw my wife go through, if anyone is reading this and wondering about needing the same treatment. It ruins a week and mildly roasts you.
When I was younger and went to a beach, girls would rush to gather round me as the sunlight would reflect off my ribs and help them tan. I've never been a shirtless guy type, so that has helped in my older age. It's the dome. Beware people who work or play outdoors. Use what's encased in that skull to protect what's on top of it!
For fishkeeping - one of the creams is very thick and sticky. I use gloves to apply them, but I am concerned that in spite of precautions, I could technically poison a fishtank. I expect the cyto-toxins would not do my fish good, so I won't make any contact with water or equipment until 24 hours after the meds are done. I have ideas of what I'd like to do, but they can wait. It's been a boring week. I never even turn the TV on in the normal run of things, but I've been watching baseball, Ted Lasso and hockey, and sitting around like some sort of toxic waster.