Self tan mousse cannot contain UV, right?
That's right, it can't contain UV, because UV light is not a thing you can put in a bottle. The rest I'd rather dismiss as some marketing gibberish akin to this:



(sold back in the days when radium was all the hype, this thing is probably less awful than it seems, because it could not realistically have contained more than a few atoms of radium.)



Then again, chances are that the gibberish bears some resemblance to actual facts; so what? Fluorescence is just the ability to absorb and re-emit light. Whatever its composition may be, this thing would not shine UV on you all by itself.

As to the possible dangers, you either trust the regulatory body acting in your jurisdiction, or you don't. At least these guys supposedly did test the product, which I didn't.