What would a 1W Spartan laser do to skin or your eye?

I'm thinking about buying a blue 1W Spartan Laser, and It worries me with safety precautions. I wouldn't want my brother getting a hold of it and pointing it at someone's skin, or worse, their eye. I put all my lasers in my gun safe, but I keep that locked and the ammunition stored separately so even if my brother got into that, he wouldn't have ammo for the guns. But, to the point, what would a 1W Blue laser do to skin and eyes?