I've had biopsies done on me for decades. My first malignant biopsy came back when I was 34 and I had surgery for that one on my 35th birthday - an interesting way to spend a birthday to be sure... That was 12 years ago and I've had countless skin cancer surgeries since then, usually two-three per year, my next one is a week away. Both parents had basil-cell carcinoma (dad did his PhD research in the AZ desert, mom loved tanning), and I grew up in the tropics so it was only a matter of time, but as with most teenagers, I felt bulletproof and should have worn sunscreen more often than I did.
Covering up as best I can now will not undue damage from the past, but will hopefully mediate the number of scalpels I face in the future, which will be plenty as is. From what my doctors have told me, skin cancer tends to take about 20 years to do its thing, so the stuff they are regularly hacking off of me now is a result of exposure back in my 20's. This, in hindsight, makes sense as my teens were spent in Southeast Asia in the early 80's and having a tan was a byproduct of my lifestyle at that time, which primarily revolved around surfing/diving/long-distance running (sans shirt).
While a face mask, or 'buff' as they are often referred to, is probably not too common in CO, it's a rare caucasian in Florida on a boat that isn't wearing one. Thankfully the message is slowly getting out to the under-20 set that sun has long-term repercussions.
'Mohs' surgery, where they slice a little, go take a look under the microscope, come slice a little more, go look at that slab, come back and repeat, is about the single most awful experience I've endured (and I've done my time with malaria, typhoid, and a host of other good stuff). If you are light skinned/light haired, sunscreen and a wide brimmed hat are worthwhile investments, regardless of age
