As you probably know, during the hype of CFLs, there was lots of warning about "Ultraviolet exposure from sitting under fluorescent lights for eight hours is equivalent to one minute of sun exposure."
As I doubt about these warning, as the 365nm UVA line of mercury at low pressure, is very insignificant, I asking this question: Which mercury UV lines passes through the glass of fluorescent and CFL?

Normally the UV is absorbed by the glass. But for the longer wave end of the UVA (near blue) the glass lets pass some fraction, so you will find some residues.
So if you take the UV spectrum of a low pressure mercury and argon or krypton (the buffer will radiate also, even when it is small energy compare to the Hg) lines, the longer the wavelength the more of them passes.

This long wave UV is pretty well stopped by the top dead skin layer, so does nothing. But for some organic compounds (like some paints) it may be destructive over time, but so is even the blue itself (even though way less effect), these energies can break some weaker bonds...