There is some research saying 222nm is safe, yet still disrupts viruses and bacteria. And you can buy lamps at that frequency on Amazon (for like $1700). Howe

There is some research saying 222nm is safe, yet still disrupts viruses and bacteria. And you can buy lamps at that frequency on Amazon (for like $1700). However it's not like it's been proved safe by a decades worth of testing and use. The LED's at 222nm just became available in the last year or so. I don't think anyone knows the long term consequences. Some web sites selling these lamps disclaim all responsibility. Also remember WE are made of a LOT of bacteria and viruses. Might not be such a good thing to sterilize your skin daily. Some of that stuff protects you from nastier stuff.