Are spray on tans that you can pick up in a can from local drug store safe?

Yes: Dihydroxyacetone darkens the dead layer of your skin the same way that charring darkens a burger. Some folks inhale the contents of the can which is a bad idea; close eyes & hold breath when spraying your face. Trusting you simply want the tan, much favored by bodybuilders.

Perhaps: They probably are safer than a tanning bed which exposes you to the risk of developing skin cancer. I am not sure exactly what the ingredients are in tanning sprays. They may also contain carcinogens. Environmental working group: ewg.Com is a good site to check it out.