InChristAlone
Member
Yeah definitely need some source. If I had to use it I'd use it on the skin.The issue is what happens when there is no sunlight? I'm also very interested in UV light for D too, and have purchased a light, although slightly concerned about skin cancer.
Don't be afraid of skin cancer you don't need a lot of the UVB to make enough. If it's a strong lamp. I burned myself for the first time with mine a couple weeks ago. It was only like 5-6 mins! I had been doing like 3 or less though. It can penetrate deeper than UVA.