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UV-emitting nail polish dryers damage DNA and cause mutations in cells

phys.org

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Re: UV-emitting nail polish dryers damage DNA and cause mutations in cells

#2
How much damage does it do compared to, say, sitting in the summer sun for 20 minutes?

Also makes me curious about those UV teeth-whitening devices and whether there is any similar research for them. I don't know how valid such a concern would be, but it seems reasonable to assume that the skin inside the mouth wasn't designed to be exposed to UV as much as skin on the outside of the body, so I wonder if it's more susceptible to damage from that type of thing.

Re: UV-emitting nail polish dryers damage DNA and cause mutations in cells

#3
post #2

How much damage does it do compared to, say, sitting in the summer sun for 20 minutes? Also makes me curious about those UV teeth-whitening devices and whether there is any similar research for them. I don't know how valid such a concern would be, but it seems reasonable to assume that the skin inside the mouth wasn't designed to be exposed to UV as much as skin on the outside of the body, so I wonder if it's more su…

It doesn't seem like a surprising result, I agree, though it also wouldn't be too hard for people to wear opaque gloves that covered most of their hands in the machine (unlike the tooth whiteners). My instinct is that if it was extremely bad for us there would be a surprising spike in skin cancers of the hands, but I suppose since hands are exposed to sunlight almost as much as faces, it might be hard to make the connection to nail salons.

Re: UV-emitting nail polish dryers damage DNA and cause mutations in cells

#4
post #2

How much damage does it do compared to, say, sitting in the summer sun for 20 minutes? Also makes me curious about those UV teeth-whitening devices and whether there is any similar research for them. I don't know how valid such a concern would be, but it seems reasonable to assume that the skin inside the mouth wasn't designed to be exposed to UV as much as skin on the outside of the body, so I wonder if it's more su…

Not a scientist but I'd imagine more because it's a lot of radiation focused on a very small area.

With DNA damage being cumulative I'd imagine the DNA repair systems can't keep up with that many molecular lesions at once.

Re: UV-emitting nail polish dryers damage DNA and cause mutations in cells

#5
post #2

How much damage does it do compared to, say, sitting in the summer sun for 20 minutes? Also makes me curious about those UV teeth-whitening devices and whether there is any similar research for them. I don't know how valid such a concern would be, but it seems reasonable to assume that the skin inside the mouth wasn't designed to be exposed to UV as much as skin on the outside of the body, so I wonder if it's more su…

It doesn't seem like a surprising result, I agree, though it also wouldn't be too hard for people to wear opaque gloves that covered most of their hands in the machine (unlike the tooth whiteners). My instinct is that if it was extremely bad for us there would be a surprising spike in skin cancers of the hands, but I suppose since hands are exposed to sunlight almost as much as faces, it might be hard to make the con…

Yea the face and hands are typically the first bodyparts to show skin "aging" which is now more commonly thought to be preventable (mostly) with moisturizing, Retonol, and sunscreen.

There are UV protecting gloves put there. I wonder how effective they are though? I know UPF fabric shirts definitely stop me from getting burned when fishing.

Re: UV-emitting nail polish dryers damage DNA and cause mutations in cells

#6
I’m no expert here at all, but I wonder how much this translates to real world risk. It seems like they’re irradiating unprotected cells with a direct blast of UV. How much of that UV actually penetrates the top layers of skin? They’re also subjecting cells to 20+ minutes of continuous exposure, while during a gel manicure typically involves 60-120 seconds of exposure. Obviously we’re not seeing individuals walk out of manicure sessions with necrosis of the fingertips. Their values of 20-70% cell death don’t seem meaningfully representative.

I’d love somebody with an informed opinion to weigh in here. Is this bad science? Bad reporting? Or is there genuine danger here that’s been flying under the radar?

My concern is, we see a lot of sensational science reporting that plays up the risks and dangers of potentially routine things, lowering public trust in science.

Re: UV-emitting nail polish dryers damage DNA and cause mutations in cells

#7
post #2

How much damage does it do compared to, say, sitting in the summer sun for 20 minutes? Also makes me curious about those UV teeth-whitening devices and whether there is any similar research for them. I don't know how valid such a concern would be, but it seems reasonable to assume that the skin inside the mouth wasn't designed to be exposed to UV as much as skin on the outside of the body, so I wonder if it's more su…

This is a good question indeed. Using a LED lamp, it takes 30 seconds to dry one hand.

The one I own has 4 settings: 10, 30, 60 and 100 seconds.

They last for 2 to 3 weeks.

I wonder how much damage happens from exposing your fingers for 30 seconds every 2-3 weeks.

I'm thinking there could be some risks for technicians who spend their days next to the devices, but devices usually don't leak any light.

Re: UV-emitting nail polish dryers damage DNA and cause mutations in cells

#8
The beauty industry is one of the most reckless and and capriciously hazardous consumer-facing industries there is. Online retailers are filled with insanely dangerous beauty products, like high power lasers that don't even come with safety googles. Many of their chemical products are unproven at best, often outright hazardous to use at all without a fume hood. Parasites and synthetic stimulants sold as weight loss products, the list goes on and on.

Re: UV-emitting nail polish dryers damage DNA and cause mutations in cells

#9
post #2

How much damage does it do compared to, say, sitting in the summer sun for 20 minutes? Also makes me curious about those UV teeth-whitening devices and whether there is any similar research for them. I don't know how valid such a concern would be, but it seems reasonable to assume that the skin inside the mouth wasn't designed to be exposed to UV as much as skin on the outside of the body, so I wonder if it's more su…

Aren't they using UV blasts on fast-hardening resins in tooth repair as well?

Re: UV-emitting nail polish dryers damage DNA and cause mutations in cells

#10
post #9
post #2

How much damage does it do compared to, say, sitting in the summer sun for 20 minutes? Also makes me curious about those UV teeth-whitening devices and whether there is any similar research for them. I don't know how valid such a concern would be, but it seems reasonable to assume that the skin inside the mouth wasn't designed to be exposed to UV as much as skin on the outside of the body, so I wonder if it's more su…

Aren't they using UV blasts on fast-hardening resins in tooth repair as well?

That's a one off thing though.

Akin to getting an x-ray v living to close to Chernobyl.

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