Contrary to Arcadia's marketing (which is not infrequently a bit far from the truth), shielded halogens emit very little UVA (they're comparable to tungsten incandescent). The UV content isn't a concern, though visible light well may be.
The main reason I asked is because there are unshielded "UVB" halogens on the market (on Amazon) that are quite dangerous, as they emit measurable UVC (and not enough UVB to be at all effective in any herp application).